UCC29950EVM-631

Using the UCC29950EVM-631 User's Guide Literature Number: SLUUB69A March 2015 – Revised March 2015 User's Guide SLUUB69A – March 2015 – Revised March 2015 Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module 1 Introduction The UCC29950EVM-631 evaluation module is a 300-W nominal, two-stage off-line converter. The EVM consists of a Continuous Conduction Mode (CCM) PFC input stage followed by a half-bridge LLC output and isolation stage. It provides a 12-V constant-voltage output with overload and short circuit protection. The UCC29950 incorporates a wide range of protection features to ensure safe system operation. The EVM may be operated without an external bias supply in Self Bias Mode, or with an external bias supply in Aux Bias Mode. 2 Description This evaluation module uses the UCC29950 CCM PFC and LLC Combo Controller in a 300-W converter The input accepts a voltage range of 90 VAC to 265 VAC. It has an output voltage of 12 V and a maximum output current of 25 A. Refer to the UCC29950 datasheet, (TI Literature Number SLUSC18), for full specs and details about the controller features. This EVM makes use of the device features to control a twostage power supply that is rated for 300-W output power. An overload timer tracks the extent and duration of overload and trips the overload protection when the current exceeds the over-current protection profile described in the datasheet. The overload protection turns the power stages off and then attempts restarts at 1 second intervals. If the VCC level at the UC29950 controller falls below the UVLO threshold the controller shuts down. It will attempt a restart when VCC recovers. The over-temperature protection feature of the UCC29950 trips If the temperature of the device exceeds the thermal shutdown temperature. The device restarts once the temperature falls to the restart temperature. The UCC29950 employs frequency dithering to reduce conducted emissions and therefore reduce the size and cost of the EMI filter. This user’s guide provides the schematic, component list, assembly drawing, art work and test set up necessary to evaluate the UCC29950EVM-631. 2 Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback Description www.ti.com 2.1 Features UCC29950EVM-631 features include: • AC Input Range 90 VAC to 264 VAC • DC Output of 12 V, 25 A • A CCM Boost Power Factor Correction Input Stage for High-Power Factor and High Efficiency • An LLC Output Stage for High Efficiency • Low Start-Up Current, with Integrated High-Voltage Start-Up Control • On/Off Control of PFC Stage and PFC / LLC Stages • Current Sense Inputs for PFC / LLC Overload Protection • Line Brownout Protection • PFC Bus Over-Voltage and Under-Voltage Protection • X-Cap Discharge Function for Reduced System Standby Power Consumption • Three Level LLC Over-Current Protection for Loads with High-Peak Power Requirements • Short Circuit Protection • Over Temperature Protection • Operation in Self Bias or Aux Bias Modes CAUTION High voltage levels are present on the evaluation module whenever it is energized. Proper precautions must be taken when working with the EVM. The large bulk capacitor, C6, and the output capacitors C17, C20, C21, C22, C23, C24, C20 and C12, must be completely discharged before the EVM can be handled. Serious injury can occur if proper safety precautions are not followed. 2.2 Typical Applications The UCC29950 is suited for use in mid-to-high power off-line converters. It is simple to use and has a lowexternal component count with extensive fault protection features. • Televisions • High Efficiency AC-to-DC server power supplies • High Density Adapters • 80+ SILVER PC Silver Box • Gaming • Audio • Lighting Drivers • Industrial Power SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated 3 Electrical Performance Specifications 3 www.ti.com Electrical Performance Specifications Table 1. UCC29950EVM-631 Performance Summary PARAMETER TEST CONDITION MIN TYP MAX UNIT Input Characteristics VIN Input voltage fLINE Input frequency 90 115/230 47 265 VAC 63 Hz PIN(115V_no-load) No-load input power VIN = 115 V fLINE = 60 Hz, IOUT = 0 A PIN(230V_no-load) No-load input power VIN = 230 V fLINE = 50 Hz, IOUT = 0 A 200 mW IIN(peak) Peak input current VIN = 90 V), fLINE = 60 Hz, IOUT = 25 A 5.4 A 200 mW AC turn-on voltage 80 AC turn-off voltage 75 VAC Output Characteristics VOUT Output voltage VIN(min) < VIN < VIN(max), fLINE(min) < fLINE < fLINE(max), IOUT(min) < IOUT < IOUT(max) VOUT(line) Line regulation VIN(min) < VIN < VIN(max), IOUT = IOUT(max) 0.1% VIN = 115 VAC, fLINE = 60 Hz, IOUT(min) < IOUT < IOUT(max) 0.1% VIN = 230 VAC, fLINE = 50 Hz, IOUT(min) < IOUT < IOUT(max) 0.1% VOUT(load) 12.0 12.1 VDC IOUT Output load current VIN(min) < VIN < VIN(max) fLINE(min) < fLINE < fLINE(max) 0 25 A POUT Output power VIN(min) < VIN < VIN(max) fLINE(min) < fLINE < fLINE(max) 0 300 W VRIPPLE(SW) High-frequency output voltage ripple (measured with of a 10-µF aluminum electrolytic capacitor and a 1-µF highfrequency ceramic capacitor across the output terminals.) IOCC 4 Load regulation 11.9 Steady-state output over current threshold VIN = 115 VAC, fLINE = 60 Hz IOUT = IOUT(max) 400 mVP-P VIN = 230 VAC, fLINE = 50 Hz IOUT = IOUT(max) 400 mVP-P 28 A VIN(min) ≤ VIN ≤ VIN(max) Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback Electrical Performance Specifications www.ti.com Table 1. UCC29950EVM-631 Performance Summary (continued) PARAMETER TEST CONDITION MIN TYP MAX UNIT System Characteristics fSW(PFC) PF THD fSW(LLC) ηFL ηAV tAMB Switching frequency – including ±2-kHz dither Power factor Total harmonic distortion TJ = 25°C Average efficiency 109 0.999 VIN = 230 VAC, 50 Hz, IOUT = IOUT(max) 0.995 VIN = 115 VAC, fLINE = 60 Hz, IOUT = IOUT(max) 3% 10% VIN = 230 VAC, fLINE = 50 Hz IOUT = IOUT(max) 6% 10% 110 350 70 VIN = 115 VAC, fLINE = 60 Hz, IOUT = IOUT(max) 88.3% VIN = 230 VAC, fLINE = 50 Hz, IOUT = IOUT(max) 90.5% VIN = 115 VAC, fLINE = 60 Hz, IOUT = IOUT(max) 87.8% VIN = 230 VAC, fLINE = 50 Hz, IOUT = IOUT(max) 90.2% Ambient temperature SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback 100 VIN = 115 VAC, 60 Hz, IOUT = IOUT(max) LLC stage switching frequency Full load efficiency 87 25 Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated kHz kHz °C 5 BULK AC1 10.0Meg R42 R46 3.3Meg 3.09Meg R50 R45 75.0k 10.0Meg R44 3.09Meg R49 10.0Meg R43 AC2 R51 PFCCS 3.09Meg Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated D19 D18 470 MOSI 3.09Meg R38 LLC_RCS AGND AGND 1000pF C41 470 R53 AGND C38 470pF C37 470pF 3.09Meg 3.09Meg R52 AGND C36 470pF R40 R37 0 R36 0 R39 D16 D15 2.21k R55 Q4 R35 0 C39 0.1µF TP16 PSON 8 7 5 3 C33 0.1µF AGND C40 0.1µF TP17 FB UCC29950D FB LLC_CS PFC_CS AC1 AC2 VBULK AGND GND AGND PFC_GD GD2 GD1 SUFG 0 AGND TP10 PFCGD GD2 R61 1.00k AGND R54 100k S1 R47 100k VCC 1 3 5 7 9 TP11 C46 100pF AGND VCC PSON ACDET1 FB D17 Green R41 10.0k AGND GD1 TP12 TP13 R48 PGND 1 6 TP14 16 2 14 4 15 C35 10µF TP9 AC_DET C34 10µF PGND MD_SEL/PS_ON SUFS VCC U6 VCC R56 3.32k 12 11 13 10 9 375Vdc 4 1 6 3 6 S2 5103308-1 J6 0 R19 4 1 2 4 6 8 10 TP15 MOSI PSON ACDET1 PGND 4 6 3 AC1 Schematic www.ti.com Schematic Figure 1. UCC29950EVM-631 Schematic - Control SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback J1 GD1 GD2 TP21 NEUTRAL LINE 90VAC to 264VAC VCC R57 1.00 C27 0.1μF C25 1μF V1 VCC C45 100pF 51.1 R11 250V 8A PGND C44 100pF 51.1 R13 TP4 3 2 1 C26 220μF TP5 8 9 10 14 2 1 4 7 C16 1μF 18V D11 D20 UCC27714D NC NC NC NC LI HI NC/EN VDD U2 2.2 R58 AC2 C1 0.47μF L1 2.2mH D6 PFCCS LO HS HO HB PGND 3 5 6 11 12 13 TP28 - R15 1.10M R14 10.0M VSS COM C2 0.47μF 5 ohm ~ D2 TP3 + C48 0.01μF C12 0.1μF R4 0.1 ~ t° R5 0.1 3.30 C47 10μF 6 1 3 2 3.30 R17 NC IN EN DELAY R18 10.0k GND EP OUT PG FB U7 R12 10.0k R60 HS2 7 5 8 LLC_RCS AGND C43 10μF D10 C13 0.012μF H2 HEATSINK Q1, Q2 PGND 1 2 3 Q3 AOW25S65 TPS7A1601DGNT 0 OUTL OUTH VDD UCC27511DBVR GND IN- IN+ U1 PFCGD Q2 AOW25S65 Net-Tie 4 5 6 R1 10.0 LV i NT1 BULK TP24 TP25 AGND NF D9 C3 0.33μF R6 0.1 R10 NF D5 AC1 90VAC to 264VAC 4 RT1 9 R59 100k 3 2 1 C9 1μF C11 D12 J5 3 1 6 5 2 D13 1 2 3 TP8 T1 FB 19 20 15 16 18 17 14 13 C10 3 1 3 1 AGND R34 NF TP22 TP20 2 2 H3 HEATSINK D4, D6 3 4 1 2 3 ACPL-217-56AE U4 2 1 2 1 NF S3 C22 1000μF SEC_0V C21 1000μF R21 NF R20 NF C32 0.1μF C20 330μF R30 0 C31 NF BZX384-C12,115 12V D14 C24 1000μF LLC_RCS C23 1000μF 1.20 R9 1.20 R8 1.20 R7 47μF C7 PFC BULK RTN +PFC BULK J2 NOMINAL VBULK: 390VDC BULK TP33 1 2 3 385V to 450VDC TP23 ACPL-217-56AE U3 R28 NF VCC 3 4 R23 1.20k VCC TP32 C5 0.1μF TP31 HS3 SEC_0V C4 0.1μF STPS40L45CT D8 D7 SEC_0V C6 270μF HIGH VOLTAGE 1000pF PGND H1 HEATSINK D2, D3, Q1 Q1 HS1 D3 C3D04060A C19 D4 TP18 TP26 L3 R62 10.0k 1 TP2 0.016μF C15 0.047μF 0.016μF PGND J4 C42 0.1μF VCC 1 2 3 C14 0.012μF C8 0.1μF 1.0 3.3 R3 R2 L2 D1 2 3 HIGH VOLTAGE 1 4 3 6 F1 1 Copyright © 2015, Texas Instruments Incorporated C29 NF U5 TL431AIDBZR NF C30 TP7 TP6 0.047μF R29 R25 10.0k R22 5.10k R16 NF 1.5μH L4 Tinned Copper H33 MECH 296 SV005 2 SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback 3 TP1 R32 NF R26 18.0k R24 49.9 C17 330μF +VOUT R31 0 10K R33 C28 NF R27 NF +VOUT 1 2 3 4 VOUT RTN TP29 TP30 J3 +VOUT OUTPUT: 12 VDC, 25 A SEC_0V TP27 C18 1μF TP19 www.ti.com Schematic Figure 2. UCC29950EVM-631 Schematic - Power Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module 7 Test Setup 5 www.ti.com Test Setup Figure 3 shows the test setup recommended in order to evaluate the UCC29950EVM-631 in Self Bias Mode. Figure 4 shows the test setup recommended in order to evaluate the UCC29950EVM-631 in Aux Bias Mode. + - L N Power Meter + Current + - Voltage 62 k:, 5W The 62-k: resistor and the V2 Meter provide monitoring and an automatic discharge of the PFC stage output capacitance (C6). They are recommended but are not necessary for operation and may be omitted. Remember to discharge C6 when finished. The voltage on the bulk capacitor, C6, may be monitored at J2 as shown or at TP31 (pos) and TP 32 (neg) Fan Electronic Load + + V1 - V2 AC Source + A1 Figure 3. UCC29950EVM-631 Recommended Self Bias Test Set Up 8 Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback Test Setup www.ti.com V2 - AC Source + L N 62 k:, 5W 13 V Bias Supply - Electronic Load + + Fan + A1 - + V1 - Power Meter + Current + - Voltage The 62-k: resistor and the V2 Meter provide monitoring and an automatic discharge of the PFC stage output capacitance (C6). They are recommended but are not necessary for operation and may be omitted. Remember to discharge C6 when finished. The voltage on the bulk capacitor, C6, may be monitored at J2 as shown or at TP31 (pos) and TP 32 (neg) Figure 4. UCC29950EVM-631 Recommended Aux Bias Test Set Up WARNING High voltages that may cause injury exist on this evaluation module (EVM). Please ensure all safety procedures are followed when working on this EVM. Never leave a powered EVM unattended. SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated 9 Test Setup 5.1 www.ti.com Test Equipment AC Source: (for example, Hewlett Packard 6813B 300 VRMS, 1750 VA AC Power Source/Analyzer) or VARIAC. The input voltage shall be a transformer isolated variable AC source capable of supplying between 90 VAC and 264 VAC, at 50 Hz and 60 Hz, at no less than 10-A peak. 13-V Bias Supply: The bias supply to the device shall be capable of supplying up to 13 VDC at no less than 100 mA. Connect the bias supply to the negative and positive terminals of J5, shown in Figure 3 and Figure 4. Output Load: One Electronic Load (for example TDI RBL 488 600-40-800). A programmable electronic load set to constant current mode and capable of sinking 0 A to 25 A at 12 VDC shall be used. Connect the load to J3 as shown in Figure 3 and Figure 4. Power Meter: For highest accuracy, a power analyzer shall be used to measure the input power, THD, and power factor. An example of such an analyzer is the Voltech PM100 Single Phase Power Analyzer or the Yokogawa WT210/WT230 Digital Power Meter. Multimeters: For highest accuracy, the output voltage of the UCC29950EVM-631 shall be monitored by connecting a digital voltmeter, V1, directly across TP18 and TP27 with the positive terminal at TP18 and the negative terminal at TP27. A dc current meter, A1, should be placed in series with the electronic load for accurate output current measurements. Oscilloscope: A digital or analog oscilloscope with 500-MHz scope probes is recommended. Fan: A fan, capable of 200 LFM to 400 LFM, should be used to maintain component temperatures within safe operating ranges at all times during operation of the UCC29950EVM-631. Position the fan so as to blow along the length of the heatsink as shown in Figure 3 and Figure 4. Recommended Wire Gauge: All electrical connections to the EVM must be made using appropriately rated wire. The line connections at J1, the PFC Output connections at J2 and the Aux Bias connections at J5 may be made using 22 AWG (0.5 mm2) Tri Rated wire. The output connections at J3 may be made with 16 AWG (1.5 mm2) Tri Rated wire. Use two conductors for the positive output and two for the negative output. The normal output load current of 25 A causes a voltage drop of about 250 mV per meter in both the positive and negative connections. 10 Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback Test Setup www.ti.com 5.2 List of Test Points Table 2. Test Point Functional Description TEST POINT NAME DESCRIPTION TP1 TP1 AC line input TP2 TP2 Drain of PFC stage MOSFET TP3 PFCCS Signal across PFC current sensing resistor TP4 TP4 AC neutral Input TP5 VCC VCC supply to the UCC29950 controller TP6 VOUT Loop injection point TP7 TP7 Loop injection point TP8 AGND Analog (signal) ground TP9 VCC VCC rail for UCC29950 TP10 AGND Analog (signal) ground TP11 AC_DET AC_DET signal output TP12 GD1 LLC low-side MOSFET gate-drive output signal TP13 GD2 LLC high-side MOSFET gate-drive output signal TP14 PFC_GD TP15 PSON TP16 LLC_CS PFC stage MOSFET gate-drive output signal MD_SEL/PS_ON signal LLC stage current sense input signal TP17 FB TP18 TP18 TP19 +VOUT TP20 TP20 LLC transformer output TP21 VDD VDD supply to MOSFET driver devices TP22 TP20 LLC transformer output TP23 TP23 LLC stage rectified output TP24 TP24 LLC stage low-side MOSFET gate TP25 TP25 LLC stage high-side MOSFET gate TP26 TP26 LLC stage input switched node TP27 VOUT RTN TP28 PGND Power ground TP29 TP29 Output adjust monitor TP30 TP30 Output adjust monitor TP31 VBULK PFC stage output voltage (typical 385 V) TP32 PGND Power ground TP33 PGND Power ground SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback LLC stage feedback signal LLC stage split capacitor EVM positive output EVM negative output Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated 11 Test Setup 5.3 www.ti.com Power-Up/Power-Down Procedure: Self Bias Mode The following test procedure is recommended primarily for power up and shutting down the evaluation Module in Self Bias mode. Never leave a powered EVM unattended for any length of time. Also, the unit should never be handled while power is applied to it. WARNING There are very high voltages present on the EVM. Some components reach temperatures above 50°C. Precautions must be taken when handling the board. Never operate the UCC29950EVM631 without the fan running. Always make certain the bulk capacitor (C6) has completely discharged prior to handling the EVM. TP8 J6 J4 H12 TP5 TP3 1. Working at an ESD workstation, make sure that the ionizer is on before the EVM is removed from the protective packaging. Electrostatic smock and safety glasses should also be worn. Because voltages in excess of 400 V may be present on the EVM, do not connect the ground strap from the smock to the bench. If testing with a load, set the electronic load to Constant Current Mode. 2. Power Up: in Self Bias Mode (a) Connect the equipment as shown in Figure 3. (b) Set the electronic load to 2 A. (c) S1 to the ‘off’ position, switch toggle pointed to the heatsink as shown in Figure 6. (d) Set S2 to the 'on' position, switch toggle pointed away from the heatsink as shown in Figure 7. (e) Use the link to connect pin 2 to pin 3 of J4. (f) Turn on the fan. (g) Set the AC source voltage between 90 VAC and 264 VAC. (h) Turn the AC source on. (i) Verify that the output of the module is within regulation. Startup time may be several seconds. RTN BIAS + Figure 5. J4 Link Setting for Self Bias Mode 12 Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback Test Setup www.ti.com Figure 6. S1 and S2 Settings for PFC and LLC Off (Aux Bias Mode only) Figure 7. S1 and S2 Settings for PFC and LLC on (Aux Bias Mode and Self Bias Mode) Figure 8. S1 and S2 Settings for PFC Stage On, LLC Stage Off (Aux Bias Mode only) SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated 13 Test Setup 5.4 www.ti.com Power-Up/Power-Down Procedure: Aux Bias Mode The following test procedure is recommended primarily for power up and shutting down the evaluation module in Aux Bias Mode. Never leave a powered EVM unattended for any length of time. Also, the unit should never be handled while power is applied to it. The UCC29950EVM-631 is set at the factory to operate in Aux Bias Mode, with an external bias supply as shown in Figure 4. Operation in Self Bias Mode, without an external bias supply is described in Section 5.3. WARNING There are very high voltages present on the EVM. Some components reach temperatures above 50°C. Precautions must be taken when handling the board. Never operate the UCC29950EVM631 without the fan running. Always make certain the bulk capacitor (C6) has completely discharged prior to handling the EVM. 1. Working at an ESD workstation, make sure that the ionizer is on before the EVM is removed from the protective packaging. Electrostatic smock and safety glasses should also be worn. Because voltages in excess of 400 V may be present on the EVM, do not connect the ground strap from the smock to the bench. If testing with a load, set the electronic load to Constant Current Mode. 2. Power Up in Aux Bias Mode: (a) Connect the equipment as shown in Figure 4. (b) Set the electronic load to 2 A. (c) Set the two switches, S1 and S2 to the 'off' position, switch toggle pointed to the heatsink as shown in Figure 6. (d) Check that the link connects pin 1 to pin 2 of J4. (e) Turn on the 13-V bias supply. (f) Set S2 to the 'on' position. switch toggle pointed away from the heatsink as shown in Figure 7. (g) Turn on the fan. (h) Set the AC source voltage between 90 VAC and 264 VAC . (i) Turn the AC source on. (j) Verify that the output of the module is within regulation. NOTE: The Power Up procedure given above will always work. However, providing that the bias supply has not been interrupted and S2 is in the 'on' position, the EVM will power up and down as the AC source is turned on and off. 5.5 Equipment Shutdown 1. 2. 3. 4. 14 To quickly discharge the output capacitors, make sure there is a load greater than 0 A on the EVM. Turn off the AC source. Turn off the bias source if operating in Aux Bias Mode. Using the voltmeter at V2, check that the voltage on the bulk capacitor, C6, has fallen to a safe level. Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback UCC9950EVM-631 Feature Testing www.ti.com 6 UCC9950EVM-631 Feature Testing 6.1 AC Input Range 90 VAC to 264 VAC The EVM may be operated in both Self Bias and Aux Bias Modes and at any load over the full universal input voltage range, from 90 VAC to 264 VAC. The EVM turns on at a voltage slightly below 90 VAC, typically at around 80 V. PFC switching action halts if the line voltage gets too low, typically below 75 V. It is safe to apply up to 300 VAC to the input but THD increases significantly due to direct conduction into the bulk capacitor at the peak of the line cycle. 6.2 Load Regulation of the DC Output Use the test set up shown in shown in Figure 3 (Self Bias Mode) and Figure 4 (Aux Bias Mode) to test the load regulation of the EVM. 1. Set the AC source to a constant voltage between 90 VAC and 264 VAC. 2. Vary the load so that the output current varies from 1 A up to 25 A, as measured on DMM A1. 3. Observe that the output voltage on DMM V1 remains within 0.1% of the full-load regulation value. 6.3 Line Regulation of the DC Output Use the test set up shown in Figure 3 (Self Bias Mode) and Figure 4 (Aux Bias Mode) to test the Line regulation of the EVM. 1. Set the load to sink the full-load current, 25 A. 2. Vary the AC source from 90 VAC to 264 VAC. 3. Observe that the output voltage on DMM V1 stays within 0.1% of the output voltage regulation value. 6.4 Power Factor The power meter may be used to monitor the power factor (PF) of the line current and the input power taken by the EVM. The PF is very close to 1.0 under most operating conditions. At very light loads, where the EVM enters a burst mode of operation the PF is lower. 6.5 Efficiency Use the output current (A1) and output voltage (V1) meters to calculate the output power and hence the overall unit efficiency over a wide range of operating conditions. The EVM has a very high end-to-end fullload efficiency of more than 90% at 230 V and more than 88% at 115 V. Typical results are shown in Figure 12 and Figure 13. 6.6 Low Start-Up Current, with Integrated High-Voltage Start-Up Control In Self Bias Mode only. Observe the VCC startup voltage waveform at TP9 during a Self-Bias startup. The capacitor is initially charged to approximately 18 V through Q4 and the SUFS pin of the UCC29950. At that point Q4 is turned off and the EVM starts. The action of turning Q4 off eliminates the losses in the startup circuit and this helps to reduce the no-load power dissipation of the system. SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated 15 UCC9950EVM-631 Feature Testing 6.7 www.ti.com On/Off Control of PFC Stage and PFC/LLC Stages In Aux Bias Mode only. When the EVM is operating in Aux Bias Mode the switches S1 and S2 may be used to turn the LLC stage off and on or turn both the LLC and PFC stages off and on. Add a ‘scope probe to the MD_SEL/PS_ON pin at TP15. Get the EVM operating normally in Aux Bias Mode as described earlier, TP15 should be at 0 V and then go to VCC when S2 is put in the ‘on’ position, see Figure 7. Then turn both stages off by flipping S2 back into the ‘off’ position, see Figure 6. TP15 should go from VCC to 0 V. Then, turn the PFC stage alone on by flipping S1 into the ‘on’ position, see Figure 8 TP15 should go to approximately VCC/2. Observe that the LLC stage has stopped (VOUT = 0 V) and the PFC stage is running (V2 monitoring the bulk capacitor). Flip S2 into the ‘on’ position again (S1 may be left in the ‘on’ position), TP 15 should go to VCC and the LLC stage will start. This feature allows the user additional flexibility in system design. Be careful when operating these switches because hazardous voltages exist on the PCB. 6.8 Three Level LLC Over-Current Protection for Loads with High-Peak Power Requirements The UCC29950 includes a three level over current protection feature on the LLC stage which allows for short term overloads beyond the normal current limit point (28A). Increase the load on the output slowly, the over current protection will operate at about 28 A. The OCP feature stops the LLC operating and then tries to restart it after about 1 second. The 28 A overload protection is triggered by the OCP1 level and will trip after a nominal 52 ms delay. Set the electronic load to apply an overload load transient (25 A to 33 A to 25 A) for a short period (20 ms). This will not trip the over current protection. Increase the time period incrementally until the OCP1 over current protection is activated. The second OCP level (OCP2) operates at about 42 A after 10 ms. This should be observed in the same way as the OCP1. Set the load to apply an overload load transient (25 A to 50 A to 25 A) for a short period 5 ms. This will not trip the over current protection. Increase the time period incrementally until the over current protection is activated as before. The third OCP level (OCP3) provides protection against output short circuits. 6.9 Short Circuit Protection The UCC29950 also includes short circuit protection which operates immediately the signal at the LLC_CS pin exceeds 900 mV (OCP3). Test this by applying a short circuit to the EVM output terminals, the LLC stage stops immediately. The best way to observe this is by monitoring one of the LLC gate drive signals at TP12 and the LLC_CS signal at TP16. Switching action will stop immediately if the signal at TP16 exceeds 900 mV. 6.10 Current Sense Inputs for PFC Overload Protection The PFC stage current sense input is used as an input to the control loop in the UCC29950. The UCC29950 uses the PFC_CS signal to shape the input current during the line cycle. It also has a current and power limiting function as explained in the ‘PFC Stage Current Sensing‘ and ‘Input Power Limit’ sections of the data sheet. The operating point for both these features is set at a level which is higher than the point at which the LLC OCP protections operate so they are not normally triggered. 16 Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback UCC9950EVM-631 Feature Testing www.ti.com 6.11 Line Brownout Protection The UCC29950 includes brownout protection which operates if the line voltage falls below the minimum operating voltage, typically 75 VAC. The UCC29950 rides through or ignores short term interruptions of up to approximately 32 ms. Set the AC source so that it provides a correct line voltage then goes to 0 V for a half cycle, the EVM operation is uninterrupted. Increase the length of the drop out, eventually the EVM will shut down (typically 32 ms), this is a non-latching shutdown so it attempts to restart after a delay of about 1 second. Repeat this process but have the AC source drop the input voltage to a low value (60 VAC for example). Again, the system ignores short dropouts but turns off for longer dropouts. 6.12 X-Cap Discharge Function for Reduced System Standby Power Consumption This feature can be tested by observing the voltage across the X-Capacitor when the line is disconnected. NOTE: Turning the output off on most AC sources sets the source to 0 V. It is best to use a mechanical switch or relay to disconnect the line voltage from the EVM. Alternatively, wire a suitably rated line socket and plug into the line cord and use that to disconnect the EVM. Put a differential scope probe from TP1 to TP4. The operation of the X-Cap feature is quite complex and is described in the ‘Active X-Cap Discharge’ section of the UCC29950 data sheet. 6.13 Output Voltage Ripple An external 10-μF aluminum capacitor and 1-μF ceramic noise decoupling capacitor network should be connected to the output to measure the output ripple and noise. This network may be connected across the +VOUT and RTN terminals of J3. The loop area between the scope probe tip and ground should be minimized for accurate ripple and noise measurements. SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated 17 Performance Data and Typical Characteristic Curves 7 www.ti.com Performance Data and Typical Characteristic Curves Figure 12 through Figure 33 present typical performance curves for the UCC9950EVM-631. 7.1 PFC Stage Loop Stability The UCC29950 uses a new Hybrid Average Current control method. The loop compensation is implemented digitally thus eliminating the need for external compensation components. The Bode Plots below were taken from a typical EVM and show a loop crossover frequency of 9Hz with a phase margin of greater than 60°. 20 100 20 100 Gain Phase -20 0 -40 10 -20 -50 100 Frequency (Hz) 0 -40 10 -50 100 Frequency (Hz) D002 D008 D001 Figure 9. PFC Loop Gain/Phase at 300 W, 115 V 7.2 50 Phase (°) Phase (°) 0 Gain (dB) 50 Gain (dB) 0 Gain Phase D002 D008 D001 Figure 10. PFC Loop Gain/Phase at 300 W, 230 V LLC Stage Loop Stability Gain (dB) 180 140 180 Gain Phase 140 100 100 60 60 20 20 -20 -20 -60 -60 -100 -100 -140 -140 -180 10 100 Phase (°) The gain and phase characteristic of the LLC stage is dominated by the external components in the feedback loop rather than by the UCC29950 itself. The Bode Plots below were taken from a typical EVM and show a loop crossover frequency of approximately 1.1kHz with a phase margin of greater than 45°. -180 10000 1000 Frequency (Hz) D002 D008 D001 Figure 11. Gain/Phase vs. Frequency 18 Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback Performance Data and Typical Characteristic Curves www.ti.com 7.3 Efficiency 91 85 80 90 75 70 89 65 88 60 55 Efficiency (%) Efficiency (%) 87 86 85 84 50 45 40 35 30 25 83 20 82 15 115 V 90 V 230 V 81 90 V 115 V 230 V 10 5 80 0 0 2.5 5 7.5 10 12.5 15 17.5 20 22.5 25 27.5 Load Current (A) D001 Figure 12. UCC29950EVM-631 Typical Efficiency (as a function of line voltage and current) 0 0.2 0.4 0.6 0.8 1 1.2 Load Current (A) 1.4 1.6 1.8 2 D001 Figure 13. UCC29950EVM-631 Typical Light-Load Efficiency (as a function of line voltage and current) The UCC29950EVM-631 also meets the requirements of 80PLUS Silver with good margin and is close to meeting the requirements of 80PLUS Gold. Table 3. UCC29950EVM-631, Typical Average Efficiency VIN (V) F (Hz) % LOAD PIN (W) POUT (W) EFFICIENCY (%) PF AVG EFF (%) 115 60 100 345.3 300.0 86.9 0.999 88.0 75 256.7 225.0 87.6 0.999 50 168.0 150.0 89.2 0.997 25 84.95 75.0 88.3 0.990 100 337.0 300.0 89.0 0.995 75 250.7 225.0 89.7 0.990 50 164.4 150.0 91.3 0.982 25 83.02 75.0 90.3 0.958 230 50 SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback 90.1 Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated 19 Performance Data and Typical Characteristic Curves 7.4 www.ti.com Total Harmonic Distortion 30 90 V 115 V 230 V 27.5 25 22.5 THD (%) 20 17.5 15 12.5 10 7.5 5 2.5 30 60 90 120 150 180 210 240 270 300 330 360 Input Power (W) D001 Figure 14. UCC29950EVM-631 Total Harmonic Distortion (as a function of line voltage and load current) 7.5 Current Harmonics CURRENT HARMONICS, 230VAC, 50 Hz, FULL LOAD 0.07 0.06 AMPLITUDE (A) 0.05 0.04 0.03 0.02 0.01 0 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 HARMONIC NUMBER PWR631 IEC61000-3-2 Class D max Figure 15. UCC29950EVM-631 Current Harmonics (230-VAC, 50-Hz input, full load) 20 Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback Performance Data and Typical Characteristic Curves www.ti.com 7.6 Line/Load Regulation 12.03 12.09 230 (V) 115 (V) 12.085 12.08 12.075 12.02 Output Voltage (V) Output Voltage (V) 12.07 12.065 12.01 12.06 12.055 12.05 12.045 12.04 12.035 12.03 12.025 12.02 12.015 12 12.01 0 50 100 150 200 250 Input Voltage (VRMS) 300 0 2.5 5 7.5 D001 Figure 16. Line Regulation vs Input Voltage 7.7 350 10 12.5 15 17.5 20 22.5 25 27.5 Output Current (A) D001 Figure 17. Load Regulation vs Output Current Power Factor 1 Power Factor (PF) 0.99 0.98 0.97 0.96 230 V 115 V 0.95 0 100 200 Input Power (W) 300 400 D001 Figure 18. Power Factor vs Input Power SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated 21 Performance Data and Typical Characteristic Curves 7.8 www.ti.com Input Current Figure 19. UCC29950EVM-631 Input current (90-VAC, 60-Hz, full load, 2 A/div.) Figure 20. UCC29950EVM-631 Input Current (115-VAC, 60-Hz, full load 2 A/div.) Figure 21. UCC29950EVM-631 Input Current (230-VAC, 50-Hz, full load 1 A/div.) 22 Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback Performance Data and Typical Characteristic Curves www.ti.com 7.9 Output Voltage Ripple Figure 22. UCC29950EVM-631 VBULK Voltage Ripple (115-VAC, 60-Hz input, full load) Figure 23. UCC29950EVM-631 VBULK Voltage Ripple (230-VAC, 50-Hz input, full load) Figure 24. UCC29950EVM-631 Output Noise (115-VAC, 60-Hz input, full load) Figure 25. UCC29950EVM-631 Output Noise (230-VAC, 50-Hz input, full load) SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated 23 Performance Data and Typical Characteristic Curves www.ti.com 7.10 Light-Load Performance At light loads, typically below 1 A, the UCC29950-PWR631 EVM enters a burst mode of operation. As the load on the power stages reduces, eventually a point is reached where the controller can no longer maintain continuous switching operation without allowing VOUT to increase. In burst mode, the controller does not operate continually but instead delivers short bursts of energy to the output separated by longer intervals during which no energy transfer occurs. This allows the controller to maintain the correct average output voltage – at the expense of an increase in output ripple. Typical output ripple performance is shown in Figure 26 and Figure 27 below. The burst interval and the output ripple amplitude depends on whether the EVM is operating in Aux Bias or Self Bias Mode. Figure 26. VOUT, No Load, Aux Bias, Burst Interval is 340 ms, ΔVOUT is 400 mV 24 Figure 27. VOUT, No Load, Self Bias, Burst Interval is 4-s intervals, ΔVOUT = 1.5 V Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback Performance Data and Typical Characteristic Curves www.ti.com 7.11 Output Noise Measurements All output noise measurements have been taken directly at output connector J3. Figure 28. DC Coupled, VOUT 0 A, Aux Bias Burst is Approximately 8-ms Long, Burst Rep Interval is Approximately 340 ms Figure 29. VOUT, 1 A, Aux Bias Figure 30. VOUT 25 A, Aux Bias Figure 31. VOUT 25 A, Aux Bias SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated 25 Performance Data and Typical Characteristic Curves Figure 32. VOUT, 1 A, Self Bias www.ti.com Figure 33. VOUT 25 A, Aux Bias Table 4. No-Load Input Power 26 LINE BIAS MODE 90 VAC Self Bias AUX BIAS POWER NO LOAD INPUT POWER 325 mW 115 VAC Self Bias 390 mW 230 VAC Self Bias 660 mW 264 VAC Self Bias 90 VAC Aux Bias 130 mW 254 mW + 130 mW = 384 mW 115 VAC Aux Bias 130 mW 200 mW + 130 mW = 330 mW 230 VAC Aux Bias 130 mW 160 mW + 130 mW = 290 mW 264 VAC Aux Bias 130 mW 175 mW + 130 mW = 305 mW 745 mW Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback EVM Assembly Drawing and PCB Layout www.ti.com 8 EVM Assembly Drawing and PCB Layout Figure 34 through Figure 37 show the design of the UCC29950EVM-631 printed circuit board. Figure 34. UCC29950EVM-631 Top Layer Assembly Drawing (top view) Figure 35. UCC29950EVM-631 Bottom Layer Assembly Drawing (bottom view) SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated 27 EVM Assembly Drawing and PCB Layout www.ti.com Figure 36. UCC29950EVM-631 Top Copper (top view) Figure 37. UCC29950EVM-631 Bottom Copper (bottom view) 28 Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback EVM Assembly Drawing and PCB Layout www.ti.com Figure 38. Components Assembly SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated 29 List of Materials 9 www.ti.com List of Materials Table 5 lists the UCC29950EVM-631 components according to the schematic shown in Figure 1 and Figure 2. Table 5. UCC29950EVM-631 List of Materials QTY 30 REF DES DESCRIPTION MFR PART NUMBER 2 C1, C2 Capacitor, film, 0.47 µF, 275 V, ±20%, TH Panasonic ECQ-U2A474ML 1 C3 Capacitor, film, 0.33 µF, 275 V, ±20%, TH Panasonic ECQ-U2A334ML 2 C4, C5 Capacitor, ceramic, 0.1 µF, 630 V, ±10%, X7R, 1812 MuRata GRM43DR72J104KW01L 1 C6 Capacitor, aluminum, 270 µF, 450 V, ±20%, TH Cornell Dubilier 380LQ271M450K022 1 C7 Capacitor, ceramic, 47 µF, 6.3 V, ±10%, X7R, 1210 MuRata GRM32ER70J476KE20L 3 C8, C27, C42 Capacitor, ceramic, 0.1 µF, 50 V, ±5%, X7R, 0805 AVX 08055C104JAT2A 2 C9, C18 Capacitor, ceramic, 1 µF, 50 V, ±10%, X7R, 0805 MuRata GRM21BR71H105KA12L 1 C10 Capacitor, ceramic, 1000 pF, 250 V, ±20%, E, Disc, 8 mm x 12 mm MuRata DE1E3KX102MA5BA01 2 C11, C19 Capacitor, film, 0.016 µF, 630 V, ±5% Panasonic ECW-F6163JL 2 C13, C14 Capacitor, film, 0.012 µF, 800 V, ±3%, TH Panasonic ECW-H8123HA 2 C12, C32 Capacitor, ceramic, 0.1 µF, 16 V, ±10%, X7R, 0603 Kemet C0603C104K4RACTU 1 C15 Capacitor, film, 0.047 µF, 630 V, ±20%, TH VishayBccomponents BFC233820473 1 C16 Capacitor, ceramic, 1 µF, 50 V, ±10%, X7R, 0603 Taiyo Yuden UMK107AB7105KA-T 2 C17, C20 Capacitor, aluminum, 330 µF, 16 V, ±20%, 0.014 Ω, TH Nippon Chemi-Con APS-160ELL331MJC5S 4 C21, C22, C23, Capacitor, aluminum, 1000 µF, 16 V, ±20%, 0.03 Ω, C24 TH Panasonic EEU-FR1C102L 1 C25 Capacitor, ceramic, 1 µF, 35 V, ±10%, X7R, 0805 Taiyo Yuden GMK212B7105KG-T 1 C26 Capacitor, aluminum, 220 µF, 35 V, ±20%, 0.087 Ω, TH Nippon Chemi-Con EKY-350ELL221MH15D 1 C29 Capacitor, ceramic, 0.047 µF, 50 V, ±10%, X7R, 0805 AVX 08055C473KAT2A 2 C33, C39 Capacitor, ceramic, 0.1 µF, 50 V, ±10%, X7R, 0603 AVX 06035C104KAT2A 2 C34, C35 Capacitor, ceramic, 10 µF, 35 V, ±10%, X7R, 1206 Taiyo Yuden GMK316AB7106KL 3 C36, C37, C38 Capacitor, ceramic, 470 pF, 50 V, ±10%, X7R, 0603 Kemet C0603C471K5RACTU 1 C40 Capacitor, ceramic, 0.1 µF, 25 V, ±10%, X7R, 0603 AVX 06033C104KAT2A 1 C41 Capacitor, ceramic, 1000 pF, 50 V, ±10%, X7R, 0603 Kemet C0603C102K5RACTU 2 C43, C47 Capacitor, ceramic, 10 µF, 50 V, ±10%, X5R, 1206_190 TDK CGA5L3X5R1H106K160 AB 2 C44, C45 Capacitor, ceramic, 100 pF, 50 V, ±1%, C0G/NP0, 0603 AVX 06035A101FAT2A 1 C46 Capacitor, ceramic, 100 pF, 50 V, ±1%, C0G/NP0, 0603 AVX 06035A101FAT2A 1 C48 Capacitor, ceramic, 0.01 µF, 50 V, ±10%, X7R, 0603 Kemet C0603C103K5RACTU 0 C28 Capacitor, ceramic, 1000 pF, 25 V, ±5%, C0G/NP0, 0603 MuRata GRM1885C1E102JA01D 0 C30 Capacitor, ceramic, 47 pF, 50V, ±5%, C0G/NP0, 0603 AVX 06035A470JAT2A 0 C31 Capacitor, aluminum, 10 µF, 35V, ±20%, TH Nichicon UVR1V100MDD1TA 1N5406 1 D1 Diode, switching-bridge, 600 V, 3 A, TH VishaySemiconductor 1 D2 Diode, switching-bridge, 420 V, 8 A, TH Micro Commercial Components GBU8J-BP 1 D3 Diode, Schottky, 600 V, 4 A, TH Cree C3D04060A 1 D4 Diode, P-N, 1000 V, 1 A, TH Fairchild Semiconductor IN4007 1 D10 Diode, Schottky, 40 V, 0.38 A, SOD-523 Diodes Inc. ZLLS350TA Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback List of Materials www.ti.com Table 5. UCC29950EVM-631 List of Materials (continued) QTY REF DES DESCRIPTION MFR PART NUMBER 1 D6 Diode, ultrafast, 600 V, 1.5 A, SMA VishaySemiconductor 2 D7, D8 Diode, Schottky, 45 V, 20 A, TH ST Microelectronics STPS40L45CT 1 D11 Diode, Zener, 18 V, 500 mW, SOD-123 Diodes Inc. MMSZ5248B-7-F 2 D12, D13 Diode, switching, 100 V, 0.215 A, SOT-23 NXP Semiconductor BAV99,215 1 D14 Diode, Zener, 12 V, 300 mW, SOD-323 NXP Semiconductor BZX384-C12,115 2 D15, D16 Diode, fast rectifier, 800 V, 0.2 A, TVS, 1.7 mm x 0.7 mm x 1.25 mm Panasonic DA2JF8100L 1 D20 Diode, ultrafast, 75 V, 0.3 A, SOT-23 Diodes Inc. BAS16-7-F 2 D5, D9, D18, D19 Diode, ultrafast, 100 V, 0.25 A, SOD-323 NXP Semiconductor BAS316,115 1 F1 Fuse, 8 A, 250 V, TH Littelfuse 0216008.MXESPP 9 H1, H2, H3, H4, H5, H6, H7, H8, H9 Machine screw, pan, phillips, M3 x 5 mm Keystone 29311 8 H10, H11, H12, H13, H14, H15, Hex standoff #6-32 NYLON 1 inch x 1/2 inch H16, H17 Keystone 4824 8 H18, H19, H20, H21, H22, H23, Standoff, Hex, 0.5 inch long #6-32 Nylon H24, H25 Keystone 1903C 7 H29, H30, H31, H32, H33, H34, MAX clip H35 Aavid Thermalloy MAX01NG 3 HS1, HS2, HS3 Heatsink vert max clip, black, 4.25 inches Aavid 782653B04250G 2 J1, J2 Terminal block 5.08 mm vertical 3 position, th On-Shore Technology ED120/3DS 1 J3 Terminal block, 4 x 1, 5.08 mm, TH On-Shore Technology ED120/4DS 1 J4 Header, TH, 100 mil, 1 x 3, gold plated, 230 mil above insulator Sullins Connector Solutions PBC03SAAN 1 J5 Terminal block 5.08mm vertical 2 position, th On-Shore Technology ED120/2DS 1 J6 Header (shrouded), 100 mil, 5 x 2, gold, TH TE Connectivity 5103308-1 7448258022 BYG20J-E3/TR 1 L1 Coupled inductor, 2.2 mH, 8 A, 0.014 Ω, ±30%, TH Wurth Elektronik eiSos 1 L2 Inductor, ?, , A, TH Renco Electronics RLTI-1108 1 L3 Inductor, shielded, ?, 55 µH, A, 0.065 Ω, TH Vitec Corporation 75PR8106 1 L4 Inductor, shielded, powdered iron, 1.5 µH, 31 A, 0.00162 Ω, SMD Vishay-Dale IHLP6767GZER1R5M11 1 LBL1 Thermal transfer printable labels, 0.65 inch wide x 0.20 inch high, - 10,000 per roll Brady THT-14-423-10 1 D17 LED, green, TH Everlight HLMP1523 3 Q1, Q2, Q3 MOSFET, N-channel, 650 V, 25 A, TO-262 AOS AOW25S65 BSS126 H6906 1 Q4 MOSFET, N-channel, 600 V, 0.021 A, SOT-23 Infineon Technologies 1 R1 Resistor, 10.0 Ω, 1%, 0.25 W, 1206 Vishay-Dale CRCW120610R0FKEA 2 R2, R3 Resistor, 3.3 Ω, 5%, 1 W, 2010 Vishay Dale CRCW20103R30JNEF and CRCW20101R00JNEF 3 R4, R5, R6 Resistor, 0.1 Ω, 1%, 2 W, 2512 Stackpole Electronics Inc CSRN2512FTR100 SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated 31 List of Materials www.ti.com Table 5. UCC29950EVM-631 List of Materials (continued) QTY 32 REF DES DESCRIPTION MFR PART NUMBER 3 R7, R8, R9 Resistor, 1.20 Ω, 1%, 1 W, 2512 Panasonic Electronic Components 2 R10, R17 Resistor, 3.30 Ω, 1%, 0.25 W, 1206 Panasonic ERJ-8RQF3R3V 2 R11, R13 Resistor, 51.1 Ω, 1%, 0.25 W, 1206 Vishay-Dale CRCW120651R1FKEA 5 R12, R18, R25, Resistor, 10.0 kΩ, 1%, 0.1 W, 0603 R41, R62 Vishay-Dale CRCW060310K0FKEA 1 R14 Resistor, 10.0 MΩ, 1%, 0.1 W, 0603 Yageo America RC0603FR-0710ML 1 R15 Resistor, 1.10 MΩ, 1%, 0.1 W, 0603 Vishay-Dale CRCW06031M10FKEA 1 R22 Resistor, 5.10 kΩ, 0.5%, 0.1 W, 0805 Susumu Co Ltd RR1220P-512-D 1 R24 Resistor, 49.9 Ω, 1%, 0.25 W, 1206 Panasonic ERJ-8ENF49R9V 1 R26 Resistor, 18.0 kΩ, 1%, 0.1 W, 0603 Yageo America RC0603FR-0718KL 1 R31 Resistor, 0 Ω, 5%, 0.125 W, 0805 Vishay-Dale CRCW08050000Z0EA 1 R33 Trimmer, 10 kΩ, 0.75 W, TH Bourns 3006P-1-103LF 4 R35, R36, R37, Resistor, 0 Ω, 5%, 0.25 W, 1206 R48 Vishay-Dale CRCW12060000Z0EA 6 R38, R39, R40, Resistor, 3.09 MΩ, 1%, 0.25 W, 1206 R49, R50, R51 Vishay-Dale CRCW12063M09FKEA 3 R42, R43, R44 Resistor, 10.0 MΩ, 1%, 0.25 W, 1206 Vishay-Dale CRCW120610M0FKEA 1 R45 Resistor, 75.0 kΩ, 1%, 0.1 W, 0603 Vishay-Dale CRCW060375K0FKEA 1 R46 Resistor, 3.3 MΩ, 5%, 0.1 W, 0603 Vishay-Dale CRCW06033M30JNEA 3 R47, R54, R59 Resistor, 100 kΩ, 1%, 0.1 W, 0603 Vishay-Dale CRCW0603100KFKEA 2 R52, R53 Resistor, 470 Ω, 1%, 0.1 W, 0603 Yageo America RC0603FR-07470RL 1 R55 Resistor, 2.21 kΩ, 1%, 0.1 W, 0603 Vishay-Dale CRCW06032K21FKEA 1 R56 Resistor, 3.32 kΩ, 1%, 0.1 W, 0603 Vishay-Dale CRCW06033K32FKEA 1 R57 Resistor, 1.00 Ω, 1%, 0.125 W, 0805 Panasonic ERJ-6RQF1R0V 1 R58 Resistor, 2.2 Ω, 5%, 0.125 W, 0805 Vishay-Dale CRCW08052R20JNEA 1 R60 Resistor, 0 Ω, 5%, 0.25 W, 1206 Vishay-Dale CRCW12060000Z0EA 0 R20, R32 Resistor, 5.10 kΩ, 1%, 0.1 W, 0603 Yageo America RC0603FR-075K1L 0 R21 Resistor, 100 Ω, 1%, 0.1 W, 0603 Vishay-Dale CRCW0603100RFKEA 0 R27 Resistor, 39.2 kΩ, 1%, 0.1 W, 0603 Vishay-Dale CRCW060339K2FKEA 1 R16, R61 Resistor, 1.00 kΩ, 1%, 0.25 W, 1206 Vishay-Dale CRCW12061K00FKEA 2 R19, R29, R30, Resistor, 0 Ω, 5%, 0.1 W, 0603 R34 Vishay-Dale CRCW06030000Z0EA 1 R23, R28 Resistor, 1.20 kΩ, 1%, 0.1 W, 0603 Yageo America RC0603FR-071K2L 1 RT1 Thermistor NTC, 5 Ω, 25%, Disc, 220 mm x 770 mm GE Sensing CL-40 2 SH1, SH2 Shunt, 100 mil, flash gold, black Sullins Connector Solutions SPC02SYAN 8 SIL1, SIL3, SIL5, SIL7, Silcon thermal pad Bergquist Company SP900S-0.009-00-114 2 S1, S2, S3 Switch, toggle, SPST, 1 position, TH E-Switch 200USP9T1A1M2RE 1 T1 LLC transformer, 280 µH, TH Renco Electronics RLTI-1115 2 TP1, TP4 Test point, multipurpose, yellow, TH Keystone 5014 SIL2, SIL4, SIL6, SIL8 Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module Copyright © 2015, Texas Instruments Incorporated ERJ-1TRQF1R0U SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback Revision History www.ti.com Table 5. UCC29950EVM-631 List of Materials (continued) QTY REF DES DESCRIPTION MFR PART NUMBER 25 TP2, TP3, TP5, TP6, TP7, TP11, TP12, TP13, TP14, TP15, TP16, TP17, TP18, Test point, multipurpose, white, TH TP20, TP21, TP22, TP23, TP24, TP25, TP26, TP29, TP30, TP31, TP32, TP33 Keystone 5012 3 TP8, TP10, TP28 Test point, compact, black, TH Keystone 5006 1 TP9 Test point, compact, red, TH Keystone 5005 1 TP19 Test point, multipurpose, red, TH Keystone 5010 1 TP27 Test point, multipurpose, black, TH Keystone 5011 1 U3, U4 Mini-flat half pitch package, general purpose photocoupler, SMT Avago ACPL-217-56AE 0 FID1, FID2, FID3 Fiducial mark. There is nothing to buy or mount. N/A N/A 1 PCB1 Printed Circuit Board Any UCC29950EVM-631 1 U1 4 A/8 A Single Channel High-Speed Low-Side Gate Drivers TI UCC27511DBV 1 U2 High-Speed Low-Side Gate Driver Device, D0014A Texas Instruments UCC27714D14 1 U5 Precision Programmable Reference, DBZ0003A Texas Instruments TL431AIDBZ U6 Continuous-Conduction-Mode Power Factor Correction and LLC Resonant Converter Combo Controller, D0016A Texas Instruments UCC29950D 1 U7 Single Output LDO, 100 mA, Adjustable 1.2 to 18.5 V Output, 3 to 60 V Input, with Enable and Power Good, 8-pin MSOP (DGN), -40 to 125 degC, Green (RoHS & no Sb/Br) Texas Instruments TPS7A1601DGNT 1 V1 Varistor, 300 V, 1.75 kA, 7 MM radial, TH EPCOS Inc B72207S2301K101 1 Revision History Changes from Original (March 2015) to A Revision ....................................................................................................... Page • • Added Line/Load Regulation images. ................................................................................................. 21 Added Power Factor image. ............................................................................................................ 21 NOTE: Page numbers for previous revisions may differ from page numbers in the current version. SLUUB69A – March 2015 – Revised March 2015 Submit Documentation Feedback Revision History Copyright © 2015, Texas Instruments Incorporated 33 STANDARD TERMS AND CONDITIONS FOR EVALUATION MODULES 1. Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, or documentation (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms and conditions set forth herein. Acceptance of the EVM is expressly subject to the following terms and conditions. 1.1 EVMs are intended solely for product or software developers for use in a research and development setting to facilitate feasibility evaluation, experimentation, or scientific analysis of TI semiconductors products. EVMs have no direct function and are not finished products. EVMs shall not be directly or indirectly assembled as a part or subassembly in any finished product. For clarification, any software or software tools provided with the EVM (“Software”) shall not be subject to the terms and conditions set forth herein but rather shall be subject to the applicable terms and conditions that accompany such Software 1.2 EVMs are not intended for consumer or household use. EVMs may not be sold, sublicensed, leased, rented, loaned, assigned, or otherwise distributed for commercial purposes by Users, in whole or in part, or used in any finished product or production system. 2 Limited Warranty and Related Remedies/Disclaimers: 2.1 These terms and conditions do not apply to Software. The warranty, if any, for Software is covered in the applicable Software License Agreement. 2.2 TI warrants that the TI EVM will conform to TI's published specifications for ninety (90) days after the date TI delivers such EVM to User. Notwithstanding the foregoing, TI shall not be liable for any defects that are caused by neglect, misuse or mistreatment by an entity other than TI, including improper installation or testing, or for any EVMs that have been altered or modified in any way by an entity other than TI. Moreover, TI shall not be liable for any defects that result from User's design, specifications or instructions for such EVMs. Testing and other quality control techniques are used to the extent TI deems necessary or as mandated by government requirements. TI does not test all parameters of each EVM. 2.3 If any EVM fails to conform to the warranty set forth above, TI's sole liability shall be at its option to repair or replace such EVM, or credit User's account for such EVM. TI's liability under this warranty shall be limited to EVMs that are returned during the warranty period to the address designated by TI and that are determined by TI not to conform to such warranty. If TI elects to repair or replace such EVM, TI shall have a reasonable time to repair such EVM or provide replacements. Repaired EVMs shall be warranted for the remainder of the original warranty period. Replaced EVMs shall be warranted for a new full ninety (90) day warranty period. 3 Regulatory Notices: 3.1 United States 3.1.1 Notice applicable to EVMs not FCC-Approved: This kit is designed to allow product developers to evaluate electronic components, circuitry, or software associated with the kit to determine whether to incorporate such items in a finished product and software developers to write software applications for use with the end product. This kit is not a finished product and when assembled may not be resold or otherwise marketed unless all required FCC equipment authorizations are first obtained. Operation is subject to the condition that this product not cause harmful interference to licensed radio stations and that this product accept harmful interference. Unless the assembled kit is designed to operate under part 15, part 18 or part 95 of this chapter, the operator of the kit must operate under the authority of an FCC license holder or must secure an experimental authorization under part 5 of this chapter. 3.1.2 For EVMs annotated as FCC – FEDERAL COMMUNICATIONS COMMISSION Part 15 Compliant: CAUTION This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. FCC Interference Statement for Class A EVM devices NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER FCC Interference Statement for Class B EVM devices NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: • • • • Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. 3.2 Canada 3.2.1 For EVMs issued with an Industry Canada Certificate of Conformance to RSS-210 Concerning EVMs Including Radio Transmitters: This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. Concernant les EVMs avec appareils radio: Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes: (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement. Concerning EVMs Including Detachable Antennas: Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for successful communication. This radio transmitter has been approved by Industry Canada to operate with the antenna types listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated. Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited for use with this device. Concernant les EVMs avec antennes détachables Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique à l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope rayonnée équivalente (p.i.r.e.) ne dépasse pas l'intensité nécessaire à l'établissement d'une communication satisfaisante. Le présent émetteur radio a été approuvé par Industrie Canada pour fonctionner avec les types d'antenne énumérés dans le manuel d’usage et ayant un gain admissible maximal et l'impédance requise pour chaque type d'antenne. Les types d'antenne non inclus dans cette liste, ou dont le gain est supérieur au gain maximal indiqué, sont strictement interdits pour l'exploitation de l'émetteur 3.3 Japan 3.3.1 Notice for EVMs delivered in Japan: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_01.page 日本国内に 輸入される評価用キット、ボードについては、次のところをご覧ください。 http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_01.page 3.3.2 Notice for Users of EVMs Considered “Radio Frequency Products” in Japan: EVMs entering Japan may not be certified by TI as conforming to Technical Regulations of Radio Law of Japan. If User uses EVMs in Japan, not certified to Technical Regulations of Radio Law of Japan, User is required by Radio Law of Japan to follow the instructions below with respect to EVMs: 1. 2. 3. Use EVMs in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal Affairs and Communications on March 28, 2006, based on Sub-section 1.1 of Article 6 of the Ministry’s Rule for Enforcement of Radio Law of Japan, Use EVMs only after User obtains the license of Test Radio Station as provided in Radio Law of Japan with respect to EVMs, or Use of EVMs only after User obtains the Technical Regulations Conformity Certification as provided in Radio Law of Japan with respect to EVMs. Also, do not transfer EVMs, unless User gives the same notice above to the transferee. Please note that if User does not follow the instructions above, User will be subject to penalties of Radio Law of Japan. SPACER SPACER SPACER SPACER SPACER 【無線電波を送信する製品の開発キットをお使いになる際の注意事項】 開発キットの中には技術基準適合証明を受けて いないものがあります。 技術適合証明を受けていないもののご使用に際しては、電波法遵守のため、以下のいずれかの 措置を取っていただく必要がありますのでご注意ください。 1. 2. 3. 電波法施行規則第6条第1項第1号に基づく平成18年3月28日総務省告示第173号で定められた電波暗室等の試験設備でご使用 いただく。 実験局の免許を取得後ご使用いただく。 技術基準適合証明を取得後ご使用いただく。 なお、本製品は、上記の「ご使用にあたっての注意」を譲渡先、移転先に通知しない限り、譲渡、移転できないものとします。 上記を遵守頂けない場合は、電波法の罰則が適用される可能性があることをご留意ください。 日本テキサス・イ ンスツルメンツ株式会社 東京都新宿区西新宿６丁目２４番１号 西新宿三井ビル 3.3.3 Notice for EVMs for Power Line Communication: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page 電力線搬送波通信についての開発キットをお使いになる際の注意事項については、次のところをご覧くださ い。http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page SPACER 4 EVM Use Restrictions and Warnings: 4.1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND/OR SAFETY CRITICAL EVALUATIONS, INCLUDING BUT NOT LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS. 4.2 User must read and apply the user guide and other available documentation provided by TI regarding the EVM prior to handling or using the EVM, including without limitation any warning or restriction notices. The notices contain important safety information related to, for example, temperatures and voltages. 4.3 Safety-Related Warnings and Restrictions: 4.3.1 User shall operate the EVM within TI’s recommended specifications and environmental considerations stated in the user guide, other available documentation provided by TI, and any other applicable requirements and employ reasonable and customary safeguards. Exceeding the specified performance ratings and specifications (including but not limited to input and output voltage, current, power, and environmental ranges) for the EVM may cause personal injury or death, or property damage. If there are questions concerning performance ratings and specifications, User should contact a TI field representative prior to connecting interface electronics including input power and intended loads. Any loads applied outside of the specified output range may also result in unintended and/or inaccurate operation and/or possible permanent damage to the EVM and/or interface electronics. Please consult the EVM user guide prior to connecting any load to the EVM output. If there is uncertainty as to the load specification, please contact a TI field representative. During normal operation, even with the inputs and outputs kept within the specified allowable ranges, some circuit components may have elevated case temperatures. These components include but are not limited to linear regulators, switching transistors, pass transistors, current sense resistors, and heat sinks, which can be identified using the information in the associated documentation. When working with the EVM, please be aware that the EVM may become very warm. 4.3.2 EVMs are intended solely for use by technically qualified, professional electronics experts who are familiar with the dangers and application risks associated with handling electrical mechanical components, systems, and subsystems. User assumes all responsibility and liability for proper and safe handling and use of the EVM by User or its employees, affiliates, contractors or designees. User assumes all responsibility and liability to ensure that any interfaces (electronic and/or mechanical) between the EVM and any human body are designed with suitable isolation and means to safely limit accessible leakage currents to minimize the risk of electrical shock hazard. User assumes all responsibility and liability for any improper or unsafe handling or use of the EVM by User or its employees, affiliates, contractors or designees. 4.4 User assumes all responsibility and liability to determine whether the EVM is subject to any applicable international, federal, state, or local laws and regulations related to User’s handling and use of the EVM and, if applicable, User assumes all responsibility and liability for compliance in all respects with such laws and regulations. User assumes all responsibility and liability for proper disposal and recycling of the EVM consistent with all applicable international, federal, state, and local requirements. 5. Accuracy of Information: To the extent TI provides information on the availability and function of EVMs, TI attempts to be as accurate as possible. However, TI does not warrant the accuracy of EVM descriptions, EVM availability or other information on its websites as accurate, complete, reliable, current, or error-free. SPACER SPACER SPACER SPACER SPACER SPACER SPACER 6. Disclaimers: 6.1 EXCEPT AS SET FORTH ABOVE, EVMS AND ANY WRITTEN DESIGN MATERIALS PROVIDED WITH THE EVM (AND THE DESIGN OF THE EVM ITSELF) ARE PROVIDED "AS IS" AND "WITH ALL FAULTS." TI DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, REGARDING SUCH ITEMS, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF ANY THIRD PARTY PATENTS, COPYRIGHTS, TRADE SECRETS OR OTHER INTELLECTUAL PROPERTY RIGHTS. 6.2 EXCEPT FOR THE LIMITED RIGHT TO USE THE EVM SET FORTH HEREIN, NOTHING IN THESE TERMS AND CONDITIONS SHALL BE CONSTRUED AS GRANTING OR CONFERRING ANY RIGHTS BY LICENSE, PATENT, OR ANY OTHER INDUSTRIAL OR INTELLECTUAL PROPERTY RIGHT OF TI, ITS SUPPLIERS/LICENSORS OR ANY OTHER THIRD PARTY, TO USE THE EVM IN ANY FINISHED END-USER OR READY-TO-USE FINAL PRODUCT, OR FOR ANY INVENTION, DISCOVERY OR IMPROVEMENT MADE, CONCEIVED OR ACQUIRED PRIOR TO OR AFTER DELIVERY OF THE EVM. 7. USER'S INDEMNITY OBLIGATIONS AND REPRESENTATIONS. USER WILL DEFEND, INDEMNIFY AND HOLD TI, ITS LICENSORS AND THEIR REPRESENTATIVES HARMLESS FROM AND AGAINST ANY AND ALL CLAIMS, DAMAGES, LOSSES, EXPENSES, COSTS AND LIABILITIES (COLLECTIVELY, "CLAIMS") ARISING OUT OF OR IN CONNECTION WITH ANY HANDLING OR USE OF THE EVM THAT IS NOT IN ACCORDANCE WITH THESE TERMS AND CONDITIONS. THIS OBLIGATION SHALL APPLY WHETHER CLAIMS ARISE UNDER STATUTE, REGULATION, OR THE LAW OF TORT, CONTRACT OR ANY OTHER LEGAL THEORY, AND EVEN IF THE EVM FAILS TO PERFORM AS DESCRIBED OR EXPECTED. 8. Limitations on Damages and Liability: 8.1 General Limitations. IN NO EVENT SHALL TI BE LIABLE FOR ANY SPECIAL, COLLATERAL, INDIRECT, PUNITIVE, INCIDENTAL, CONSEQUENTIAL, OR EXEMPLARY DAMAGES IN CONNECTION WITH OR ARISING OUT OF THESE TERMS ANDCONDITIONS OR THE USE OF THE EVMS PROVIDED HEREUNDER, REGARDLESS OF WHETHER TI HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. EXCLUDED DAMAGES INCLUDE, BUT ARE NOT LIMITED TO, COST OF REMOVAL OR REINSTALLATION, ANCILLARY COSTS TO THE PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, RETESTING, OUTSIDE COMPUTER TIME, LABOR COSTS, LOSS OF GOODWILL, LOSS OF PROFITS, LOSS OF SAVINGS, LOSS OF USE, LOSS OF DATA, OR BUSINESS INTERRUPTION. NO CLAIM, SUIT OR ACTION SHALL BE BROUGHT AGAINST TI MORE THAN ONE YEAR AFTER THE RELATED CAUSE OF ACTION HAS OCCURRED. 8.2 Specific Limitations. IN NO EVENT SHALL TI'S AGGREGATE LIABILITY FROM ANY WARRANTY OR OTHER OBLIGATION ARISING OUT OF OR IN CONNECTION WITH THESE TERMS AND CONDITIONS, OR ANY USE OF ANY TI EVM PROVIDED HEREUNDER, EXCEED THE TOTAL AMOUNT PAID TO TI FOR THE PARTICULAR UNITS SOLD UNDER THESE TERMS AND CONDITIONS WITH RESPECT TO WHICH LOSSES OR DAMAGES ARE CLAIMED. THE EXISTENCE OF MORE THAN ONE CLAIM AGAINST THE PARTICULAR UNITS SOLD TO USER UNDER THESE TERMS AND CONDITIONS SHALL NOT ENLARGE OR EXTEND THIS LIMIT. 9. Return Policy. Except as otherwise provided, TI does not offer any refunds, returns, or exchanges. Furthermore, no return of EVM(s) will be accepted if the package has been opened and no return of the EVM(s) will be accepted if they are damaged or otherwise not in a resalable condition. If User feels it has been incorrectly charged for the EVM(s) it ordered or that delivery violates the applicable order, User should contact TI. All refunds will be made in full within thirty (30) working days from the return of the components(s), excluding any postage or packaging costs. 10. Governing Law: These terms and conditions shall be governed by and interpreted in accordance with the laws of the State of Texas, without reference to conflict-of-laws principles. User agrees that non-exclusive jurisdiction for any dispute arising out of or relating to these terms and conditions lies within courts located in the State of Texas and consents to venue in Dallas County, Texas. Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief in any United States or foreign court. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2015, Texas Instruments Incorporated spacer IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All semiconductor products (also referred to herein as “components”) are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment. 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