BQ50002AEVM-607

User's Guide SLUUBJ2 – October 2016 bq50002A Wireless Power TX EVM The bqTESLA™ wireless power transmitter evaluation module from Texas Instruments is a highperformance, easy-to-use development module for the design of wireless power solutions. The bq50002A evaluation module (EVM) provides all the basic functions of a Qi-compliant, wireless charger pad. The 5-V input, single coil transmitter enables designers to speed the development of their end-applications. The EVM supports both the Qi WPC 1.0, WPC 1.1, and WPC 1.2 receivers and will support output power up to 5 W. 1 2 3 4 5 6 7 8 9 Contents Applications ................................................................................................................... 2 bq50002AEVM-607 Electrical Performance Specifications ............................................................ 2 Modifications.................................................................................................................. 3 Connector and Test Point Descriptions ................................................................................... 3 4.1 Input/Output Connections .......................................................................................... 3 4.2 Test Point Descriptions ............................................................................................ 4 Schematic and Bill of Materials ............................................................................................ 8 Test Setup ................................................................................................................... 11 6.1 Equipment .......................................................................................................... 11 6.2 Equipment Setup .................................................................................................. 12 6.3 EVM Procedure .................................................................................................... 12 I2C Interface and bqStudio ................................................................................................ 16 7.1 EV2400 Set Up .................................................................................................... 16 7.2 bqStudio ............................................................................................................ 17 bq50002AEVM-607 Assembly Drawings and Layout ................................................................. 18 Reference ................................................................................................................... 20 List of Figures 1 bq50002AEVM-607 Schematic ............................................................................................ 8 2 Efficiency vs Power, bq50002AEVM-607 TX and bq51013BEVM-764 Receiver .................................. 14 3 Start Up ...................................................................................................................... 14 4 Thermal Performance...................................................................................................... 15 5 Connections of the EV2400 kit ........................................................................................... 16 6 bqStudio Window ........................................................................................................... 17 7 Assembly Top............................................................................................................... 18 8 Inner Layer 1 ................................................................................................................ 19 9 Inner Layer 2 ................................................................................................................ 19 10 Bottom Layer ................................................................................................................ 20 List of Tables 1 bq50002AEVM-607 Electrical Performance Specifications ............................................................ 2 2 Bill of Materials ............................................................................................................... 9 bqTESLA is a trademark of Texas Instruments. Avid is a registered trademark of Avid Technology, Inc.. SLUUBJ2 – October 2016 Submit Documentation Feedback bq50002A Wireless Power TX EVM Copyright © 2016, Texas Instruments Incorporated 1 Applications 1 www.ti.com Applications The bq50002AEVM-607 evaluation module demonstrates the transmitter portion of the bqTESLA™ wireless power system. This transmitter EVM is a complete transmitter-side solution that powers a bqTESLA receiver. The EVM requires a single 5-V power supply capable of up to 2.0 A to operate and combines the transmitter electronics, input power circuit, LED indicators, and the transmitting coil on the single printed-circuit board (PCB). The open design allows easy access to key points of the electrical schematic. This EVM has the following features: • Qi-Certified WPC 1.2 solution for 5-W operation • 5-V input and fixed operation voltage • Enhanced Foreign Object Detection (FOD) • WPC 1.2 FOD • Transmitter-coil mounting pad providing the correct receiver interface • Highly-integrated analog front end including LDO, FETs, drivers, current sense amplifier, and demodulation circuit • Standard WPC A11-type transmitter coil with no magnet • LED and audio indication of power transfer 2 bq50002AEVM-607 Electrical Performance Specifications Table 1 provides a summary of the EVM performance specifications. All specifications are given for an ambient temperature of 25°C. Table 1. bq50002AEVM-607 Electrical Performance Specifications Parameter Notes and Conditions Min Typ Max Unit 4.5 5 5.5 V Input Characteristics VIN Input voltage IIN Input current VIN = Nom, IOUT = 1 A at 5 V 1.4 A Input no-load current VIN = Nom, IOUT = 0 A 165 mA Input stand-by current VIN = Nom 4 mA Output Characteristics – Receiver bq51013BEVM-764 VOUT IOUT Output voltage VIN = Nom, IOUT = 1 A , VOUT = 5 V Output ripple VIN = Nom, IOUT = 1.0 A, VOUT = 5 V VIN = Min to Max VIN = Min to Max, VOUT = 5 V 4.95 5.00 0 5.04 V 200 mVPP 1.5 A 205 kHz Systems Characteristics 2 FS Switching frequency During power transfer ηpk Peak efficiency VIN = Nom, P Out RX = 3 W 74 % η Full-load efficiency VIN = Nom, IOUT = Max 71 % bq50002A Wireless Power TX EVM 110 SLUUBJ2 – October 2016 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Modifications www.ti.com 3 Modifications See the datasheet for bq50002A (SLUSBW1) or bq500511A (SLUSCN3) when changing components. FOD – R27 threshold and R26 FOD_Cal (see Section 6.3.8) 4 Connector and Test Point Descriptions 4.1 Input/Output Connections The connection points are described in Section 4.1.1 through Section 4.1.4. 4.1.1 J1 – VIN Input power 5 V ±500 mV, return at J3. 4.1.2 J2 – USB Input USB input connection. 4.1.3 J3 –GND Return for input power, input at J1. 4.1.4 J4 – Serial Interface 2 I C interface connection to communicate with the IC. Used with bqStudio tool to monitor behavior SLUUBJ2 – October 2016 Submit Documentation Feedback bq50002A Wireless Power TX EVM Copyright © 2016, Texas Instruments Incorporated 3 Connector and Test Point Descriptions 4.2 www.ti.com Test Point Descriptions The test points are described in Section 4.2.1 through Section 4.2.56. 4.2.1 TP1 – CS+ Current sense amplifier positive input. 4.2.2 TP2 – CS– Current sense amplifier negative input. 4.2.3 TP3 – VIN Input power, 5 V ±500 mV. 4.2.4 TP4 – GND Return for input power. 4.2.5 TP5 –DMIN1 Modulation signal input from coil for DEMOD Channel 1. 4.2.6 TP6 –SW1 Switch node of the half bridge MOSFETs. 4.2.7 TP7 – GND Low-noise ground test point (TP). 4.2.8 TP8 –Low-Noise Analog Ground Low-noise ground TP. 4.2.9 TP9 – GND Low-noise ground TP. 4.2.10 TP10 – GND Low-noise ground TP. 4.2.11 TP11 – PGND Return for SW1. 4.2.12 TP12 – DMIN2 Modulation signal input from coil for DEMOD Channel 2. 4.2.13 TP13 – PEAK Peak detection. 4.2.14 TP14 – SW2 Switch node of the half-bridge MOSFETs. 4 bq50002A Wireless Power TX EVM SLUUBJ2 – October 2016 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Connector and Test Point Descriptions www.ti.com 4.2.15 TP15 – BP3 Output of 3-V LDO. 4.2.16 TP16 – TANK Coil signal at junction between transmitter coil and resonant capacitors. 4.2.17 TP17 – PGND Return for SW2. 4.2.18 TP18 – PWM1/CLK Input to control half-bridge MOSFETs connected to SW1 when PWM_CTRL is high. The operating frequency/pulse width changes up or down depending on every rising edge of this periodic signal when PWM_CTRL is low. 4.2.19 TP19 – PWM2/UPDN Input to control half-bridge MOSFETs connected to SW2 when PWM_CTRL is high. Increase or decrease power transfer when PWM_CTRL is low. 4.2.20 TP20 – CSO Output of the current sense amplifier. 4.2.21 TP21 – DMOUT1 Demodulated 2-kHz bit stream from demodulation channel 1. 4.2.22 TP22 – DMOUT2 Demodulated 2-kHz bit stream from demodulation channel 2. 4.2.23 TP23 – BUZZ DC output when power transfer is started. Can be used to drive a DC style buzzer or LED. See data sheet for more information. 4.2.24 TP24 – LED_B Status indication, typically RED. 4.2.25 TP25 – LED_A Status indication, typically GREEN. 4.2.26 TP26 – LED_C Status indication, typically ORANGE. 4.2.27 TP27 – LED_MODE LED mode selection. 4.2.28 TP28 – T_SENSE Temperature sensing for safety shutdown. SLUUBJ2 – October 2016 Submit Documentation Feedback bq50002A Wireless Power TX EVM Copyright © 2016, Texas Instruments Incorporated 5 Connector and Test Point Descriptions 4.2.29 www.ti.com TP29 – FOD_CAL FOD calibration. 4.2.30 TP30 – FOD_THR FOD threshold. 4.2.31 TP31 – V_SENSE Input voltage sense. 4.2.32 TP32 – FLIM Leave floating to conform to WPC specification 205-kHz maximum operating frequency. 4.2.33 TP33 – ILIM ILIM can be used to restrict the input current in order to operate with a limited input voltage source. Leave this pin open if no fixed current limit should be used. 4.2.34 TP34 – Reserved IC Pin 5 Unused. 4.2.35 TP35 – Unused IC Pin 7 Leave this pin open. 4.2.36 TP36 – Unused IC Pin 25 Leave this pin open. 4.2.37 TP37 – Unused IC Pin 27 Leave this pin open. 4.2.38 TP38 - Unused IC Pin 17 Leave this pin open. 4.2.39 TP39 - Unused IC Pin 6 Leave this pin open. 4.2.40 TP40 - Unused IC Pin 24 Leave this pin open. 4.2.41 TP41 - Unused IC Pin 26 Leave this pin open. 4.2.42 TP42 - Unused IC Pin 18 Leave this pin open. 4.2.43 TP43 – CLK_IN CLK_OUT signal from the internal oscillator of the bq50002A. 6 bq50002A Wireless Power TX EVM SLUUBJ2 – October 2016 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Connector and Test Point Descriptions www.ti.com 4.2.44 TP44 – MODE Control of frequency/pulse width of the internal generated oscillator signal. 4.2.45 TP45 – SDA I2C data. 4.2.46 TP46 – SCL 2 I C clock. 4.2.47 TP47 – 3-V Rail Resistor Divider 4.2.48 TP49 – Floating Test Point 4.2.49 TP50 – Floating Test Point 4.2.50 TP51 – GND 4.2.51 TP52 - Floating Test Point 4.2.52 TP53 - Floating Test Point 4.2.53 TP54 – GND 4.2.54 TP55 – Floating Test Point 4.2.55 TP56 – Floating Test Point 4.2.56 TP57 – GND SLUUBJ2 – October 2016 Submit Documentation Feedback bq50002A Wireless Power TX EVM Copyright © 2016, Texas Instruments Incorporated 7 Schematic and Bill of Materials 5 www.ti.com Schematic and Bill of Materials This section includes the schematics and bill of materials for the EVM. Figure 1 illustrates the schematics for this EVM. J1 R18 +5 VIN C1 1µF GND J2 GND C3 0 C5 0.1µF C6 22µF C7 0.1µF C10 0.047µF 2 R4 1.00k L2 3 USB TP4 4 2.2µF VCC_3 TP3 6 7 8 9 10 11 TP6 C4 22µF R3 1 - N/C - R11 TP2 2.00 TP1 VCC_5 C2 1µF 0.02 PGND U2 C8 22µF R5 5 C24 D1 Green 0 C22 0.1µF 0.1µF VCC_3 U1 GND GND GND GND 40 J3 GND _ LED_A 30 TP9 VCORE LED_B SCL TP10 SDA NT1 GND JTAG_CLK JTAG_DATA Net-Tie PEAK GND PGND VSENSE FOD_CAL VCC_3 TP32 FOD THR TSENSE TP47 R30 10.0k VCC_3 R29 10.0k 29 28 SCL SDA 19 20 RESERVED RESERVED 8 9 10 VPEAK VSENSE FOD_CAL 34 35 13 LED MODE R33 10.0k GND TP49 TP50 TP52 TP53 GND TP55 TP56 11 LED_A 12 LED_B C21 PWM2/UP_DN 2 COMM1 22 COMM2 23 DRV_EN 37 PWM_CTRL 38 MODE ISENSE NC NC NC NC NC NC NC NC DVSS AVSS AVSS PAD 14 15 PVIN 2 PVIN 2 BOOT 1 25 29 CSN SW 2 SW 2 SW 2 17 18 19 30 CSP BOOT 2 16 4 BP3 PGND GND 1 32 9 TP21 8 TP22 7 3 2 TP44 10 TP20 16 31 C14 0.1µF TP14 C16 0.1µF C18 0.047µF C20 0.1µF C23 0.1µF PWM2/UPDN DMIN 1 11 DMIN 2 12 PGND PGND PGND 20 21 22 GND GND GND PAD 5 6 13 33 CLK_OUT TP54 DMIN1 PGND PGND DMIN2 DMOUT 2 EN PWM_CTRL MODE CSO PGND BQ50002ARHBR TP5 TANK GND R6 C9 69.8k 1000pF R7 10.0k DMIN1 D2 D3 TP37 TP39 GND TP41 TP35 TP13 TP36 GND R1 113k TP12 C12 0.022µF C13 2200pF DMIN2 PEAK TP38 TP40 R2 7.50k VCC_3 TP42 GND GND TP45 R10 249k C15 2700pF R24 10.0k GND GND TP46 4 3 2 1 TANK GND TP34 J4 TP17 GND TP57 R12 10.0k TP16 C19 0.1µF DMOUT 1 BQ500511ARHAR TP51 C17 0.1µF PWM1-CLK_IN 3 31 36 39 41 PGND C11 0.1µF R16 0.2 TP43 21 23 24 26 LED_C TP19 CLK_IN SW 1 SW 1 SW 1 2.2µF TP18 RESERVED RESERVED 6 7 17 18 24 25 26 27 BUZZ 14 1 PVIN 1 PVIN 1 TP15 15 PWM1/CLK_OUT FLIM 4 5 R32 10.0k LED_C LED_MODE FOD_THR TSENSE 33 TP33 R31 10.0k GND BUZZ DVCC C25 0.47µF TP7 TP8 AVCC 32 27 28 L1 760308111 TP11 R8 0.2 PGND SDA SCL VCC_3 22-05-3041 VCC_5 LED_A GND LED_B TP27 J5 R15 47k 13 11 9 7 5 3 1 TP28 LED MODE TP25 LED_C TP29 R22 100k TSENSE TP30 R23 200k FOD_CAL TP31 R13 76.8k FOD THR TP23 R17 1.00k TP26 TP24 R9 1.00k D4 Orange D5 Red R19 1.00k BUZZ VSENSE R25 24.9k GND JTAG_CLK C27 0.1µF R26 93.1k R27 100k C28 0.1µF R14 10.0k R28 10.0k BUZ1 D6 Green NTC1 10.0k ohm JTAG GND JTAG_DATA t° 14 12 10 8 6 4 2 VCC_3 R21 100k R20 10.0k GND GND GND GND GND GND C26 1000pF Copyright © 2016, Texas Instruments Incorporated GND Figure 1. bq50002AEVM-607 Schematic 8 bq50002A Wireless Power TX EVM SLUUBJ2 – October 2016 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Schematic and Bill of Materials www.ti.com Table 2 contains the BOM for this EVM. Table 2. Bill of Materials (1) Designator Description Package Reference Part Number Manufacturer Alternate Part Number Alternate Manufacturer U1 1 Low-Cost 5-V Wireless Power Transmitter Controller for WPC v1.2 A11 Transmitters, RHA0040D RHA0040A BQ500511ARHAR Texas Instruments BQ500511ARHAT Texas Instruments U2 1 Low-Cost 5-V Wireless Power Transmitter Analog Front End for WPC v1.2 A11 Transmitters RHB0032E RHB0032E BQ50002ARHBR Texas Instruments BQ50002ARHBT Texas Instruments L1 1 Inductor, 6.3 µH, 13 A, 0.017 ohm, TH TH, Dia 53mm, Pin spacing 14.2mm 760308111 Wurth Elektronik BUZ1 1 Buzzer, Piezo, 4kHz, 12.2mm, TH 12.2x4.0mm PS1240P02CT3 TDK C1, C2 2 1uF CAP, CERM, 1 µF, 25 V, +/- 10%, X7R, 0603 0603 GRM188R71E105KA12D Murata C3 1 2.2uF CAP, CERM, 2.2 µF, 10 V, +/- 10%, X7R, 0603 0603 GRM188R71A225KE15D Murata C4, C6 2 22uF CAP, CERM, 22uF, 25V, +/-20%, X5R, 0805 0805 GRM21BR61E226ME44 Murata C5, C7, C11, C20, C22, C23, C24, C27 8 0.1uF CAP, CERM, 0.1uF, 25V, +/-10%, X7R, 0603 0603 C1608X7R1E104K TDK C8 1 22uF CAP, CERM, 22uF, 25V, +/-10%, X7R, 1210 1210 GRM32ER71E226KE15L Murata C9, C26 2 1000pF CAP, CERM, 1000pF, 50V, +/-5%, C0G/NP0, 0603 0603 C1608C0G1H102J TDK C10, C18 2 0.047uF CAP, CERM, 0.047uF, 50V, +/-10%, X7R, 0603 0603 C1608X7R1H473K TDK C12 1 0.022uF CAP, CERM, 0.022 µF, 50 V, +/- 10%, X7R, 0603 0603 C1608X7R1H223K TDK C13 1 2200pF CAP, CERM, 2200 pF, 50 V, +/- 10%, X7R, 0603 0603 GRM188R71H222KA01D Murata C14, C16, C17, C19 4 0.1uF CAP, CERM, 0.1 µF, 25 V, +/- 5%, C0G/NP0, 1206 1206 C3216C0G1E104J TDK C15 1 2700pF CAP, CERM, 2700pF, 50V, +/-5%, C0G/NP0, 0603 0603 C1608C0G1H272J TDK C21 1 2.2uF CAP, CERM, 2.2uF, 16V, +/-10%, X5R, 0603 0603 GRM188R61C225KE15D Murata C25 1 0.47uF CAP, CERM, 0.47uF, 10V, +/-10%, X7R, 0603 0603 GRM188R71A474KA61D Murata D1, D6 2 Green LED, Green, SMD 1.6x0.8x0.8mm LTST-C190KGKT Lite-On D2, D3 2 100V Diode, Switching, 100V, 0.2A, SOD-323 SOD-323 MMDL914-TP Micro Commercial Components D4 1 Orange LED, Orange, SMD 1.6x0.8x0.8mm LTST-C190KFKT Lite-On D5 1 Red LED, Red, SMD Red LED, 1.6x0.8x0.8mm LTST-C190CKT Lite-On NTC1 1 10.0k ohm Thermistor NTC, 10.0k ohm, 1%, 0603 0603 NTCG163JF103F TDK R1 1 113k RES, 113 k, 0.1%, 0.1 W, 0603 0603 RG1608P-1133-B-T5 Susumu Co Ltd R2 1 7.50k RES, 7.50 k, 0.1%, 0.1 W, 0603 0603 RT0603BRD077K5L Yageo America R3, R5 2 0 RES, 0 ohm, 5%, 0.25W, 1206 1206 CRCW12060000Z0EA Vishay-Dale R4, R9, R17, R19 4 1.00k RES, 1.00 k, 1%, 0.1 W, 0603 0603 CRCW06031K00FKEA Vishay-Dale R6 1 69.8k RES, 69.8k ohm, 1%, 0.1W, 0603 0603 RC0603FR-0769K8L Yageo America R7, R12, R20, R24, R28 5 10.0k RES, 10.0k ohm, 1%, 0.1W, 0603 0603 RC0603FR-0710KL Yageo America R8, R16 2 0.2 RES, 0.2 ohm, 5%, 0.25W, 0805 0805 ERJ-S6SJR20V Panasonic R10 1 249k RES, 249 k, 1%, 0.1 W, 0603 0603 RC0603FR-07249KL Yageo America (1) Qty Value 6.3uH Unless otherwise noted in the Alternate Part Number and/or Alternate Manufacturer columns, all parts may be substituted with equivalents. SLUUBJ2 – October 2016 Submit Documentation Feedback bq50002A Wireless Power TX EVM Copyright © 2016, Texas Instruments Incorporated 9 Schematic and Bill of Materials www.ti.com Table 2. Bill of Materials (1) (continued) Designator Value Description Package Reference Part Number Manufacturer R11 1 2.00 RES, 2.00, 1%, 0.1 W, 0603 0603 CRCW06032R00FKEA Vishay-Dale R13 1 76.8k RES, 76.8 k, 0.1%, 0.1 W, 0603 0603 RG1608P-7682-B-T5 Susumu Co Ltd R14 1 10.0k RES, 10.0 k, 0.1%, 0.1 W, 0603 0603 RT0603BRD0710KL Yageo America R15 1 47k RES, 47k ohm, 5%, 0.1W, 0603 0603 RC0603JR-0747KL Yageo America R18 1 0.02 RES, 0.02, 0.5%, 0.5 W, 1206 sense 1206 sense LVK12R020DER Ohmite R21, R22, R27 3 100k RES, 100 k, 1%, 0.1 W, 0603 0603 RC0603FR-07100KL Yageo America R23 1 200k RES, 200 k, 1%, 0.1 W, 0603 0603 RC0603FR-07200KL Yageo America R25 1 24.9k RES, 24.9 k, 1%, 0.1 W, 0603 0603 RC0603FR-0724K9L Yageo America R26 1 93.1k RES, 93.1 k, 1%, 0.1 W, 0603 0603 RC0603FR-0793K1L Yageo America C28 0 0.1uF CAP, CERM, 0.1uF, 25V, +/-10%, X7R, 0603 0603 C1608X7R1E104K TDK L2 0 Coupled inductor, 2.5 A, 0.034 ohm, SMD SMD, 5x5mm DLW5BTM102TQ2K Murata 10 Qty bq50002A Wireless Power TX EVM Alternate Part Number Alternate Manufacturer SLUUBJ2 – October 2016 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Test Setup www.ti.com 6 Test Setup 6.1 Equipment 6.1.1 bqTESLA™ Receiver Use the bq51013B-764 (HPA764) or bq51020EVM-520, a low-power Qi-compliant receiver. 6.1.2 Voltage Source The input voltage source must provide a regulated DC voltage of 5 V and deliver at least 2.0-A continuous load current; current limit must be set to 2 A. CAUTION To help assure safety integrity of the system and minimize risk of electrical shock hazard, always use a power supply providing suitable isolation and supplemental insulation (double insulated). Compliance to IEC 61010-1, Safety Requirements for Electrical Equipment for Measurement, Control and Laboratory Use, Part 1, General Requirements, or its equivalent is strongly suggested, including any required regional regulatory compliance certification approvals. Always select a power source that is suitably rated for use with this EVM as referenced in this user manual. External Power Supply Requirements: Nom Voltage: 5.0 VDC Max Current: 2.0 A Efficiency Level V External Power Supply Regulatory Compliance Certifications: Recommend selection and use of an external power supply which meets TI’s required minimum electrical ratings in addition to complying with applicable regional product regulatory/safety certification requirements such as (by example) UL, CSA, VDE, CCC, PSE, and so forth. 6.1.3 Meters Monitor the output voltage at the bq51013BEVM-764 test point TP7 with a voltmeter. Monitor the input current into the load with an appropriate ammeter. You can also monitor the transmitter input current and voltage, but the meter must use the averaging function for reducing error, due to communications packets. 6.1.4 Loads A resistive load box that can be set to 10 kΩ, 10 Ω, and 5 Ω, power rating of at least 5 W; or an electronic load that can be set to 0 mA, 500 mA and 1.0 A at 5 V. 6.1.5 Oscilloscope Use a dual-channel oscilloscope with appropriate probes to observe the RECT signal at bq51013BEVM764 TP3 and other signals. 6.1.6 Recommended Wire Gauge For proper operation, use 22-AWG wire when connecting the EVM to the input supply and the bq51013BEVM-764 to the load. 6.1.7 EV2400 Communication Kit EV2400-USB-Based PC Interface Kit. SLUUBJ2 – October 2016 Submit Documentation Feedback bq50002A Wireless Power TX EVM Copyright © 2016, Texas Instruments Incorporated 11 Test Setup 6.1.8 www.ti.com Software BQSTUDIO Battery Management Studio Software. 6.2 Equipment Setup The following sections describe the steps for setting up the equipment. 6.2.1 PWR607 Input Supply Set the input supply voltage to 5.0 V and current limit to 2.0 A before connecting to the UUT. Turn power supply off. The input power supply positive lead is connected to J1. The power supply return lead is connected to J2 GND. 6.2.2 Oscilloscopes With Current Probe Connect current probe to measure input current on positive power lead. 6.2.3 HPA764 Load The load is connected between J3 OUT and J4 GND of the RX. Set the load resistance to 10-kΩ or 0 mA. 6.2.4 Jumper Settings Unit Under Test, PWR607-No jumper installed. bqTesla Receiver • HPA764-JP1 → EN1 and LOW shorted • HPA764-JP2 → EN2 and LOW shorted • HPA764-JP3 → TS and DIS shorted • HAP764-JP6 → ILIM and FIX shorted • HPA764 → R3 set to 0, full CCW 6.2.5 Meters Connect ammeter to measure UUT input current from power supply. Connect voltmeter to UUT and monitor input voltage at J1. HPA764 connect voltmeter to monitor output voltage at TP7 and voltmeter to measure unregulated voltage at TP12. HPA764 connect current meter to monitor output current to load. 6.2.6 Connector A USB mini cable with red (+) and black (–) banana plugs and green/white wires shorted together. Note red lead will connect to pin 1 and black lead will connect to pin 5. Test cable should be 6- to 12-in long. 6.3 6.3.1 EVM Procedure Set Input Voltage Verify that the power supply is adjusted and connected according to Section 6.1.2. Verify that the jumper settings are completed according to Section 6.2.4. 6.3.2 Start-Up No Receiver Do not place any receiver on PWR607 for this test. Turn on power supply and observe that: 1. Input voltage at J1 is 4.9 V to 5.1 V and current is less than 100 mA with a high-to-low fluctuation or 12 bq50002A Wireless Power TX EVM SLUUBJ2 – October 2016 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Test Setup www.ti.com toggling. 2. On UUT PWR607, Power On green LED D1 is ON 3. On UUT PWR607 LED D4, D5 and D6 are OFF 4. Using current probe, monitor input current and observe digital pin will occur every 5 s for 70 ms. 6.3.3 Receiver In Place – No Load Place HPA764 on PWR607 above the TX Coil, load should be set to 10 kΩ or 0 mA. Observe that: 1. On HPA764, LED D1 is ON 2. On HPA764, voltage at TP7 should be 4.9 V to 5.1 V 3. On HPA764, voltage at TP12 should be 7.0 V to 7.5 V, voltage will fluctuate. 4. On UUT PWR607 during power transfer (HPA764 D1 ON): (a) LED D6, flashing Green (b) Input current should be less than 300 mA 6.3.4 Receiver In Place – 1.0-A Load With the HPA764 in place on the PWR607, above TX Coil set output load current to 950 mA to 1050 mA. Input voltage at UUT J1 should be 4.9 V to 5.1 V, adjust input supply if necessary. Observe that: 1. On HPA764 LED D1 is ON 2. On HPA764, voltage at TP7 should be 4.9 V to 5.1 V 3. On HPA764, voltage at TP12 should be 5.1 V to 5.3 V 4. On UUT, PWR607 LED D6 Flashing Green 5. On UUT, PWR607 input current should be less than 1700 mA SLUUBJ2 – October 2016 Submit Documentation Feedback bq50002A Wireless Power TX EVM Copyright © 2016, Texas Instruments Incorporated 13 Test Setup 6.3.5 www.ti.com Efficiency Measure the system efficiency by measuring the output voltage, output current, input voltage, and input current and calculate efficiency as the ratio of the output power to the input power. Connect voltage meters at the input and output of TX and RX. Average the input current; the comm pulses modulate the input current, distorting the reading. Figure 2 shows efficiency. 80.00% 70.00% Efficiency 60.00% 50.00% 40.00% 30.00% 20.00% 10.00% 0.00 0 1 2 3 Power (W) 4 5 6 D001 Figure 2. Efficiency vs Power, bq50002AEVM-607 TX and bq51013BEVM-764 Receiver 6.3.6 Start Up Receiver Placed on Transmitter The transmitter will send an analog ping about every 400 ms. If a receiver is present, it will power up and reply then begin power transfer. Figure 3 is a scope capture of the bq50002A EVM beginning a power transfer with the bq51013B EVM. Figure 3. Start Up 6.3.7 TS Fault With HPA764 and PWR607 operating in the configuration from Section 6.3.4, on the EVM HPA764, adjust R3 to 0 Ω. Next, move the TS Jumper JP3 from TS-DS to TS-EN. UUT PWR607 Red fault LED, D5 should light. 14 bq50002A Wireless Power TX EVM SLUUBJ2 – October 2016 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Test Setup www.ti.com 6.3.8 Foreign Object Detection (FOD) The bq50002A EVM supports FOD in order to meet the requirements of the WPC V1.2 specification. Continuously monitoring input power, known losses, and the value of power reported by the receiver device being charged, the bq500511A can estimate how much power is unaccounted for and presumed lost due to metal objects placed in the wireless power transfer path. If this unexpected loss exceeds the threshold set by the FOD resistors, a fault is indicated and power transfer is halted. Three key measurements for the TX FOD calculation: • Input Power – Product of input voltage and current. Input voltage is measured at BQ500511A pin 9 though R13 and R14. Input current is measured using sense resistor R18 at bq50002A pin 29 and 30. Both measurements must be very accurate. • Power Loss in Transmitter – This is an internal calculation based on the operating point of the transmitter. The calculation is adjusted using FOD_CAL resistor, R26. This calculation changes with external component changes in the power path such as resonant capacitors and TX coil. Recalculation of R26 and R27 is required. • Receiver Reported Power – The receiver calculates and reports power it receives in the message packet Received Power Packet. The FOD threshold on the EVM is set to 400 mW when R27 is set to 100 kΩ. Increasing R27 increases the threshold and reduces the sensitivity to foreign objects. This loss threshold is determined after making a measurement of transmitter performance using a FOD calibration receiver similar to a unit manufactured by Avid® Technology. Contact Texas Instruments for the FOD calibration procedure for the bq50002A. 6.3.9 Thermal Performance This section shows a thermal image of the bq50002AEVM-607. A 1000-mA load is used at the receiver output, bq51013BEVM-764. Output power is approximately 5 W, 1 A at 5 V. The highest temperature point in Figure 4 is 35.6°C Figure 4. Thermal Performance SLUUBJ2 – October 2016 Submit Documentation Feedback bq50002A Wireless Power TX EVM Copyright © 2016, Texas Instruments Incorporated 15 I2C Interface and bqStudio 7 www.ti.com I2C Interface and bqStudio This section includes setup and use instructions for the EV2400 and bqStudio. This software is used to read the internal registers of the bq500511A. 7.1 EV2400 Set Up Connect J4 to EV2400 kit by 4-pin cable. Connect the USB port of the EV2400 kit to the USB port of the computer. The connections are shown in Figure 5. To Computer USB Port 4-Pin Cable to EVM Figure 5. Connections of the EV2400 kit 16 bq50002A Wireless Power TX EVM SLUUBJ2 – October 2016 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated I2C Interface and bqStudio www.ti.com 7.2 bqStudio Turn on the input power supply, verify the input voltage at J1 is 4.9 V to 5.1 V and the current is less than 100 mA. Turn on the computer and open the bqStudio software. At the first selection screen (Target Selection Wizard), select Wireless Charging. At the next selection screen (Target Selection Wizard), select “WChg_1_00-bq50002.bqz”. The main window of the software is shown in Figure 6. Figure 6. bqStudio Window SLUUBJ2 – October 2016 Submit Documentation Feedback bq50002A Wireless Power TX EVM Copyright © 2016, Texas Instruments Incorporated 17 bq50002AEVM-607 Assembly Drawings and Layout 8 www.ti.com bq50002AEVM-607 Assembly Drawings and Layout Figure 7 through Figure 10 show the design of the bq50002EVM PCB. The EVM has been designed using a 4-layer, 2-oz, copper-clad circuit board, 13.2 cm × 7.24 cm with all components in a 4.0-cm x 5.0-cm active area on the top side and all active traces on the top and bottom layers to allow the user to easily view, probe, and evaluate bq50002A analog frontend IC and bq500511A control IC in a practical application. Moving components to both sides of the PCB or using additional internal layers offers additional size reduction for space-constrained systems. Gerber files are available for download from the EVM product folder (bq50002AEVM-607). A 4-layer PCB design is recommended to provide a good low-noise ground plane for all circuits. A 2-layer PCB presents a high risk of poor performance. Grounding between the bq50002A GND pins and filter capacitor returns should be a good low-impedance path. Coil Grounding – A ground plane area under the coil is recommended to reduce noise coupling into the receiver. The ground plane for the EVM is slightly larger than the coil footprint and grounded at one point back to the circuit area. Note: The clear plastic cover thickness (0.93 in or 2.4 mm) is the z-gap thickness for the transmitter. Figure 7. Assembly Top 18 bq50002A Wireless Power TX EVM SLUUBJ2 – October 2016 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated www.ti.com bq50002AEVM-607 Assembly Drawings and Layout Figure 8. Inner Layer 1 Figure 9. Inner Layer 2 SLUUBJ2 – October 2016 Submit Documentation Feedback bq50002A Wireless Power TX EVM Copyright © 2016, Texas Instruments Incorporated 19 Reference www.ti.com Figure 10. Bottom Layer 9 Reference For additional information about the bq50002AEVM-607 low-power, wireless, power evaluation kit from Texas Instruments, visit the product folder on the TI Web site at http://www.ti.com/product/bq50002A 20 bq50002A Wireless Power TX EVM SLUUBJ2 – October 2016 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated STANDARD TERMS AND CONDITIONS FOR EVALUATION MODULES 1. Delivery: TI delivers TI evaluation boards, kits, or modules, including demonstration software, components, and/or documentation which may be provided together or separately (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 © 2016, 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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