ICE3BR2280JZXKLA1

V er s io n 2.1 a , 1 1 Ja n 2 01 2 ® N e v e r s t o p t h i n k i n g . 3 CoolSET®-F3R80 ICE3BR2280JZ Revision History: 2012-1-11 Datasheet Version 2.1a Previous Version: 2.1 Page Subjects (major changes since last revision) 30 revise outline dimension for PG-DIP-7 3, 7, 17, 18 revise typo For questions on technology, delivery and prices please contact the Infineon Technologies Offices in Germany or the Infineon Technologies Companies and Representatives worldwide: see our webpage at http:// www.infineon.com CoolMOS®, CoolSET® are trademarks of Infineon Technologies AG. Edition 2012-1-11 Published by Infineon Technologies AG 81726 München, Germany © Infineon Technologies AG 1/11/12. All Rights Reserved. Attention please! The information given in this data sheet shall in no event be regarded as a guarantee of conditions or characteristics (“Beschaffenheitsgarantie”). With respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties and liabilities of any kind, including without limitation warranties of non-infringement of intellectual property rights of any third party. Information For further information on technology, delivery terms and conditions and prices please contact your nearest Infineon Technologies Office (www.infineon.com). Warnings Due to technical requirements components may contain dangerous substances. For information on the types in question please contact your nearest Infineon Technologies Office. Infineon Technologies Components may only be used in life-support devices or systems with the express written approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system, or to affect the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body, or to support and/or maintain and sustain and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may be endangered. ® ICE3BR2280JZ Off-Line SMPS Current Mode Controller with integrated 800V CoolMOS® and Startup cell (brownout & frequency jitter) in DIP-7 Product Highlights • 800V avalanche rugged CoolMOS® with startup cell • Active Burst Mode to reach the lowest Standby Power =6.8nF (5%,X7R) 10% 1.60V 20% 0.45V 1nF~2.2nF (1%,COG) 6.67% 1.42V 13.3% 0.37V 220pF~470pF (1%,COG) 4.38% 1.27V 9.6% 0.31V 0% never 0% always 17V) during the 1st start up but it does not detect in the subsequent re-start due to auto-restart protection. In case there is protection triggered such as auto restart enable or brownout before starts up, the detection will be held until the protection is removed. When the Vcc reaches the UVLO “ON” in the 1st start up, the capacitor CFB at FBB pin is charged by a 5V voltage source through the RFB resistor. When the voltage at FBB pin hits 4.5V, the FF4 will be set, the switch S9 is turned “ON” and the counter will increase by 1. Then the CFB is discharged through a 500W resistor. After reaching 0.5V, the FF4 is reset and the switch S9 is turned “OFF”. Then the CFB capacitor is charged by the 5V voltage source again until it reaches 4.5V. The process repeats until the end of 1ms. Then the detection is ended. After that, the total number of count in the counter is compared and the VFB-burst and the Vcs_burst are selected accordingly (Figure 25). VFB_burst VCSth_burst 5V 3.7.2.3 Working in Active Burst Mode After entering the Active Burst Mode, the FBB voltage rises as VOUT starts to decrease, which is due to the inactive PWM section. The comparator C6a monitors the FBB signal. If the voltage level is larger than 3.5V, the internal circuit will be activated; the Internal Bias circuit resumes and starts to provide switching pulse. In Active Burst Mode the gate G10 is released and the current limit is reduced to Vcsth_burst (Figure 2 and 24). In one hand, it can reduce the conduction loss and the other hand, it can reduce the audible noise. If the load at VOUT is still kept unchanged, the FBB signal will drop to 3.2V. At this level the C6b deactivates the internal circuit again by switching off the Internal Bias. The gate G11 is active again as the burst flag is set after entering Active Burst Mode. In Active Burst Mode, the FBB voltage is changing like a saw tooth between 3.2V and 3.5V (Figure 26). 3.7.2.4 Leaving Active Burst Mode The FBB voltage will increase immediately if there is a high load jump. This is observed by the comparator C13 (Figure 24). Since the current limit is reduced to 31%~45% of the maximum current during active burst mode, it needs a certain load jump to rise the FBB signal to exceed 4.0V. At that time the comparator C5 resets the Active Burst Mode control which in turn blocks the comparator C12 by the gate G10. The maximum current can then be resumed to stabilize VOUT. Comparator counter logic UVLO RFB 4.5V FBB C19 S Q FF4 CFB 500 0.5V UVLO during 1st startup C20 R 1ms timer S9 Control Unit Figure 25 Entry burst mode detection 3.7.2.2 Entering Active Burst Mode The FBB signal is kept monitoring by the comparator C5 (Figure 24). During normal operation, the internal blanking time counter is reset to 0. When FBB signal Version 2.1a 16 11 Jan 2012 CoolSET®-F3R80 ICE3BR2280JZ Functional Description VFBB Entering Active Burst Mode 4.0V 3.5V 3.2V detect and soft start switching pulses maintained. If the fault persists, it would continue the auto-restart mode. However, if the fault is removed, it can release to normal operation only at the even number auto restart cycle (Figure 27). Leaving Active Burst Mode VFB_burst VVCC Blanking Timer Fault detected No detect Startup and detect No detect 17V t 20ms Blanking Time 10.5V VCS VCS t t t Vcsth Figure 27 Current limit level during Active Burst Mode Non switch auto restart mode is similar to odd skip auto restart mode except the start up switching pulses are also suppressed at the even number of the restart cycle. The detection of fault still remains at the even number of the restart cycle. When the fault is removed, the IC will resume to normal operation at the even number of the restart cycle (Figure 28). Vcsth_burst VVCC t 10.5V IVCC Odd skip auto restart waveform VVCC t Fault detected No detect Startup and detect No detect 17V 3.4mA 10.5V VCS 620uA VOUT t No switching t t Figure 28 The main purpose of the odd skip auto restart is to extend the restart time such that the power loss during auto restart protection can be reduced. This feature is particularly good for smaller Vcc capacitor where the restart time is shorter. t Figure 26 Signals in Active Burst Mode 3.7.3 Protection Modes The IC provides Auto Restart mode as the major protection feature. Auto Restart mode can prevent the SMPS from destructive states. There are 3 kinds of auto restart mode; normal auto restart mode, odd skip auto restart mode and non switch auto restart mode. Odd skip auto restart mode is that there is no detect of fault and no switching pulse for the odd number restart cycle. At the even number of restart cycle the fault Version 2.1a non switch auto restart waveform The following table lists the possible system failures and the corresponding protection modes. 17 VCC Over voltage (1) Odd skip Auto Restart Mode VCC Over voltage (2) Odd skip Auto Restart Mode Over load Odd skip Auto Restart Mode Open Loop Odd skip Auto Restart Mode 11 Jan 2012 CoolSET®-F3R80 ICE3BR2280JZ Functional Description VCC Undervoltage Normal Auto Restart Mode Short Optocoupler Normal Auto Restart Mode Over temperature Non switch Auto Restart Mode External protection enable Non switch Auto Restart Mode 3.7.3.1 Vcc OVP, OTP, external protection enable and Vcc under voltage BBA Stop gate drive C9 Autorestart Enable Signal TAE base pin of an external transistor, TAE at the BBA pin. When this function is enabled, it will enter into the non switch auto restart mode. The gate drive is stopped and there is no switching pulse before it is recovered (Figure 29). The Vcc undervoltage and short opto-coupler will go into the normal auto restart mode inherently. In case of VCC undervoltage, the Vcc voltage drops indefinitely. When it drops below the Vcc under voltage lock out “OFF” voltage (10.5V), the IC will turn off the IC and the startup cell will turn on again. Then the Vcc voltage will be charged up to UVLO “ON” voltage (17V) and the IC turns on again provided the startup cell charge up current is not drained by the fault. If the fault is not removed, the Vcc will continue to drop until it hits UVLO “OFF” voltage and the restart cycle repeats. Short Optocoupler can lead to Vcc undervoltage because once the opto-coupler (transistor side) is shorted, the feedback voltage will drop to zero and there will be no switching pulse. Then the Vcc voltage will drop same as the Vcc undervoltage. 0.4V Auto Restart Mode Reset VVCC < 10.5V Thermal Shutdown Tj >130°C 25.5V C2 120µs blanking time Spike Blanking 30µs Auto Restart mode VCC C1 20.5V 4.5V C4 FBB Voltage Reference & 3.7.3.2 G1 Control Unit Vcc OVP, OTP, external protection enable Auto Restart Mode Reset VVCC < 10.5V Ichg_EB There are 2 types of Vcc over voltage protection; Vcc OVP (1) and Vcc OVP (2). The Vcc OVP (1) takes action only during the soft start period. The Vcc OVP (2) takes the action in any conditions. Vcc OVP (1) condition is when VVCC voltage is > 20.5V, VFBB voltage is > 4.5V and during soft start period, the IC enters into odd skip Auto Restart Mode. This condition likely happens during start up at open loop fault. (Figure 29). Vcc OVP (2) condition is when VVCC voltage is > 25.5V, the IC enters into odd skip Auto Restart Mode (Figure 29). The over temperature protection OTP is sensed inside the controller IC. The Thermal Shutdown block keeps on monitoring the junction temperature of the controller. After detecting a junction temperature higher than 130°C, the IC will enter into the non switch Auto Restart mode. The F3R80 has also implemented with a 50°C hysteresis. That means the IC can only be recovered when the controller junction temperature is dropped 50°C lower than the over temperature trigger point (Figure 29). The external auto restart enable feature can provide a flexibility to a customer’s self-defined protection feature. This function can be triggered by pulling down the VBBA voltage to < 0.4V. Or it can simply trigger the Version 2.1a Voltage Reference 5.0V softs_period Figure 29 Over load, open loop protection Auto Restart Mode S1 RBO2 CBK BBA # 4.5V C11 counter 500 0.9V C3 Spike Blanking 30us CT1 & G5 S2 FBB C4 4.5V Figure 30 20ms Blanking Time Control Unit Over load, open loop protection In case of Overload or Open Loop, the VFBB voltage exceeds 4.5V which will be observed by comparator C4. Then the built-in blanking time counter starts to count. When it reaches 20ms, the extended blanking time counter CT1 is activated. The switch S2 is turned on and the voltage at the BBA pin will be discharged through 500W resistor. When it drops to 0.9V, the switch S2 is turned off and the Switch S1 is turned on. Then a constant current source Ichg_EB will start to charge up BBA pin. When the voltage hits 4.5V which is monitored by comparator C11, the switch S1 is 18 11 Jan 2012 CoolSET®-F3R80 ICE3BR2280JZ Functional Description turned off and the count will increase by 1. Then the switch S2 will turn on again and the voltage will drop to 0.9V and rise to 4.5V again. The count will then increase by 1 again. When the total count reaches 256, the counter CT1 will stop and it will release a high output signal. When both the input signals at AND gate G5 is high, the odd skip Auto Restart Mode is activated after the 30us spike blanking time (Figure 30). The total blanking time depends on the addition of the built-in and the extended blanking time. If there is no CBK capacitor at BBA pin, the count will finish within 0.1ms and the equivalent blanking time is just the builtin time of 20ms. However, if the CBK capacitor is big enough, it can be as long as 1s. If CBK is 0.1uF and Ichg_EB is 720uA, the extendable blanking time is around 148.6ms and the total blanking time is 168.6ms. Since the BBA pin is a multi-function pin, it would share with different functions. The resistor RBO2 from brownout feature application may however affect the extendable blanking time (Figure 30). Thus it should take the RBO2 into the calculation of the extendable blanking time. For example the extended blanking time may be changed from 148.6ms to 201.6ms for without and having the 12.8KW RBO2 resistor. The list below shows one particular CBK, RBO2 vs blanking time. CBK RBO2 Extended blanking time Overall blanking time 0.1uF - 148.6ms 168.6ms 0.1uF 37.5KW 162.8ms 182.8ms 0.1uF 12.8KW 201.6ms 221.6ms release a low signal to the flip flop FF5 and the negative output of FF5 will release a high signal to turn on the switch S3. The constant load LD6 will start to draw constant current Ichg_BO from the BBA pin. That means the brownout mode is default “ON” during the system starts up. Vbulk RBO1 S C14 30µs~60µs blanking time 0.9V RBO2 Brownout mode G21 BBA Q R FF5 G22 G20 UVLO S3 LD6 Ichg_BO Figure 31 Control Unit Brownout detection circuit Once the system enters the brownout mode, there will be no switching pulse and the IC enters into another type auto-restart mode which is similar to the protection auto-restart mode but the IC will monitor the BBA signal in each restart cycle (Figure 32). Another factor to affect the extended blanking time is the input voltage through the RB01 and RB02. It would, on the contrary, reduce the extended blanking time. VVCC Brownout detected Startup and detect BBA voltage 17V 3.7.4 Brownout Mode When the AC input voltage is removed, the voltage at the bulk capacitor will fall. When it reaches a point that the system is greater than the system allowed maximum power, the system may go into over load protection. However, this kind of protection is not welcome for some of the applications such as auxiliary power for PC/server system because the output is in hiccup mode due to over load protection (auto restart mode). The brownout mode is to eliminate this phenomenon. The IC will sense the input voltage through the bulk capacitor to the BBA pin by 2 potential divider resistors, RBO1 and RBO2 (Figure 31). When the system is powered up, the bulk capacitor and the Vcc capacitor are charged up at the same time. When the Vcc voltage is charged to >7V, the brownout circuit start to operate (Figure 31). Since the UVLO is still at low level as the Vcc voltage does not reach the 17V UVLO “ON” voltage. The NAND gate G20 will Version 2.1a 5µs blanking time 10.5V VCS t t Figure 32 Brownout mode waveform The voltage at bulk capacitor Vbulk continues to increase and so is the voltage at BBA. When the BBA voltage reaches 0.9V, the output of OPAMP C14 will become low. Through the inverter gate G21, the “S” input of the flip flop FF5 is changed to high. Then the negative output of FF5 is low. The brownout mode is then “OFF” and the constant current load LD6 is also “OFF” through the turn-off of the S3. The system will 19 11 Jan 2012 CoolSET®-F3R80 ICE3BR2280JZ Functional Description turn on with soft start in the coming restart cycle when Vcc reaches the Vcc “ON” voltage 17V. When there is an input voltage drop, the BBA voltage also drops. When the voltage at BBA pin falls below 0.9V, the output of OPAMP C14 is changed to high. The inverter gate G22 will change the high input to low output. Then the NAND gate G22 will have a high output. The negative output of the flip flop FF5 is then become high. The constant load LD6 is “ON” again and the IC enters the brownout mode where the Vcc swings between 10.5V and 17V without any switching pulse. The formula to calculate the RBO1 and RBO2 are as below. Note: The above calculation assumes the tapping point (bulk capacitor) has a stable voltage with no ripple voltage. If there is ripple in the input voltage, it should take the highest voltage for the calculation; VBO_l + ripple voltage. Besides that the low side brownout voltage VBO_l added with the ripple voltage at the tapping point should always be lower than the high side brownout voltage (VBO_h); VBO_h > VBO_l + ripple voltage. Otherwise, the brownout feature cannot work properly. In short, when there is a high load running in system before entering brownout, the input ripple voltage will increase and the brownout voltage will increase (VBO_l = VBO_l + ripple voltage) at the same time. If the VBO_hys is set too small and is close to the ripple voltage, then the brownout feature cannot work properly (VBO_l = VBO_h). RBO1=Vhys/Ichg_BO RBO2=Vref_BO*RBO1/(VBO_l -Vref_BO) If the brownout feature is not needed, it needs to tie the BBA pin to the Vcc pin through a current limiting resistor, 500KW~1MW. The BBA pin cannot be in floating condition. If the brownout feature is disabled with a tie up resistor, there is a limitation of the capacitor CBK at the BBA pin. It is as below. where VBO_l: input brownout voltage (low point); Vhys: input brownout hysteresis voltage; Vref_BO: IC reference voltage for brownout; RBO1 and RBO2: resistors divider from input voltage to BBA pin For example, Ichg_BO=10uA, Vref_BO=0.9V, Case 1: if brownout voltage is 70Vac on and 100Vac off, then brownout voltage, VBO_l=100Vdc, hysteresis voltage, VBO_hys=43Vdc, RBO1=4.3MW, RBO2=39KW VBO_hys RBO1 RBO2 1 100V 143V 43V 4.3MW 39KW 2 141V 169V 28V 2.8MW 18KW 3 169V 225V 56V 5.6MW 30KW Version 2.1a 500KW 0.47uF 2 1MW 0.22uF 1st Auto-restart enable Extended blanking time Brownout Auto-restart enable Auto-restart enable Auto-restart enable Brownout Extended blanking time Auto-restart enable Extended blanking time Brownout Brownout Auto-restart enable Extended blanking time Brownout The top row of the table is the first happened feature and the left column is the second happened feature. For example, The summary is listed below. VBO_h 1 2nd Case 3: if brownout voltage is 120Vac on and 160Vac off, then brownout voltage, VBO_l=169Vdc, hysteresis voltage, VBO_hys=56Vdc, RBO1=5.6MW, RBO2=30KW VBO_l CBK_max 3.7.5 Action sequence at BBA pin Since there are 3 functions at the same BBA pin; brownout, extended blanking time and the auto-restart enable, the actions of sequence are set as per the below table in case of several features happens simultaneously. Case 2: if brownout voltage is 100Vac on and 120Vac off, then brownout voltage, VBO_l=141Vdc, hysteresis voltage, VBO_hys=28Vdc, RBO1=2.8MW, RBO2=18KW Case Vcc tie up resistor Case 1: The “Auto-restart enable” feature happened first and it follows with the “Extended blanking time” feature. Then the “Auto-restart enable” feature will continue to hold and the “Extended blanking time” feature is ignored. 20 11 Jan 2012 CoolSET®-F3R80 ICE3BR2280JZ Functional Description Case 2: The “Extended blanking time” feature happened first and it follows with the “Auto-restart enable” feature. Then the “Auto-restart enable” feature will take the priority and the “Extended blanking time” feature is overridden. Case 3: The “Extended blanking time” feature happened first and it follows with the “Brownout” feature. Then the “Extended blanking time” feature will continue to work until it ends. After that if the over load fault is removed the “Brownout” feature takes the action. Case 4: The “Brownout” feature happened first and it follows with the “Auto-restart enable” feature. Then the “Brownout” feature will continue to work and the “Autorestart enable” feature is ignored. One typical case happened is that the “Extended blanking time” feature happened first and it follows with the “Brownout” feature. If, however, the over load fault is removed before the end of the extended blanking time, the “Brownout” feature can take action only after 20ms buffer time. Version 2.1a 21 11 Jan 2012 CoolSET®-F3R80 ICE3BR2280JZ Electrical Characteristics 4 Electrical Characteristics Note: All voltages are measured with respect to ground (Pin 8). The voltage levels are valid if other ratings are not violated. 4.1 Note: Absolute Maximum Ratings Absolute maximum ratings are defined as ratings, which when being exceeded may lead to destruction of the integrated circuit. For the same reason make sure, that any capacitor that will be connected to pin 7 (VCC) is discharged before assembling the application circuit. Ta=25°C unless otherwise specified. Parameter Symbol Limit Values Unit Remarks min. max. VDS - 800 V ID_Puls - 4.9 A Avalanche energy, repetitive tAR limited by max. Tj=150°C1) EAR - 0.047 mJ Avalanche current, repetitive tAR limited by max. Tj=150°C IAR - 1.5 A VCC Supply Voltage VVCC -0.3 27 V FBB Voltage VFBB -0.3 5.5 V BBA Voltage VBBA -0.3 5.5 V CS Voltage VCS -0.3 5.5 V Junction Temperature Tj -40 150 °C Storage Temperature TS -55 150 °C Thermal Resistance Junction -Ambient RthJA - 96 K/W Soldering temperature, wavesoldering only allowed at leads Tsold - 260 °C 1.6mm (0.063in.) from case for 10s ESD Capability (incl. Drain Pin) VESD - 2 kV Human body model2) Drain Source Voltage Pulse drain current, tp limited by Tjmax Controller & CoolMOS® 1) Repetitive avalanche causes additional power losses that can be calculated as PAV=EAR*f 2) According to EIA/JESD22-A114-B (discharging a 100pF capacitor through a 1.5kW series resistor) Version 2.1a 22 11 Jan 2012 CoolSET®-F3R80 ICE3BR2280JZ Electrical Characteristics 4.2 Note: Operating Range Within the operating range the IC operates as described in the functional description. Parameter Symbol Limit Values min. max. Unit Remarks VCC Supply Voltage VVCC VVCCoff 25 V Max value limited due to Vcc OVP Junction Temperature of Controller TjCon -25 130 °C Max value limited due to thermal shut down of controller Junction Temperature of CoolMOS® TjCoolMOS -25 150 °C 4.3 4.3.1 Note: Characteristics Supply Section The electrical characteristics involve the spread of values within the specified supply voltage and junction temperature range TJ from – 25 °C to 125 °C. Typical values represent the median values, which are related to 25°C. If not otherwise stated, a supply voltage of VCC = 17 V is assumed. Parameter Symbol Limit Values Unit Test Condition min. typ. max. IVCCstart - 200 300 mA VVCC =16V IVCCcharge1 - - 5.0 mA VVCC = 0V IVCCcharge2 0.55 0.9 1.60 mA VVCC = 1V IVCCcharge3 0.38 0.7 - mA VVCC =16V Leakage Current of Start Up Cell and CoolMOS® IStartLeak - 0.2 50 mA VDrain = 650V at Tj=100°C 1) Supply Current with Inactive Gate IVCCsup1 - 1.9 3.2 mA Supply Current with Active Gate IVCCsup2 - 3.1 4.8 mA IFBB = 0A Supply Current in Auto Restart Mode with Inactive Gate IVCCrestart - 320 - mA IFBB = 0A Supply Current in Active Burst Mode with Inactive Gate IVCCburst1 - 620 950 mA VFBB = 2.5V IVCCburst2 - 620 950 mA VVCC = 11.5V, VFBB = 2.5V VCC Turn-On Threshold VCC Turn-Off Threshold VCC Turn-On/Off Hysteresis VVCCon VVCCoff VVCChys 16.0 9.8 - 17.0 10.5 6.5 18.0 11.2 - V V V Start Up Current VCC Charge Current 1) The parameter is not subjected to production test - verified by design/characterization Version 2.1a 23 11 Jan 2012 CoolSET®-F3R80 ICE3BR2280JZ Electrical Characteristics 4.3.2 Internal Voltage Reference Parameter Trimmed Reference Voltage 4.3.3 Symbol VREF Limit Values Unit min. typ. max. 4.90 5.00 5.10 V Test Condition measured at pin FBB IFBB = 0 PWM Section Parameter Symbol Limit Values Unit Test Condition min. typ. max. fOSC1 56.5 65 73.4 kHz fOSC2 58.2 65 70.2 kHz Tj = 25°C Frequency Jittering Range fjitter - ±2.6 - kHz Tj = 25°C Frequency Jittering period Tjitter - 4.0 - ms Tj = 25°C Max. Duty Cycle Dmax 0.70 0.75 0.80 Min. Duty Cycle Dmin 0 - - PWM-OP Gain AV 3.05 3.25 3.45 VOffset-Ramp - 0.60 - V VFBB Operating Range Min Level VFBmin - 0.7 - V VFBB Operating Range Max level VFBmax - - 4.3 V RFB 9.0 15.4 22.0 kW Fixed Oscillator Frequency Voltage Ramp Offset FBB Pull-Up Resistor 1) VFBB < 0.3V CS=1V, limited by Comparator C41) The parameter is not subjected to production test - verified by design/characterization 4.3.4 Soft Start time Parameter Soft Start time Version 2.1a Symbol tSS Limit Values Unit min. typ. max. - 10 - 24 Test Condition ms 11 Jan 2012 CoolSET®-F3R80 ICE3BR2280JZ Electrical Characteristics 4.3.5 Control Unit Parameter Symbol Limit Values Unit min. typ. max. Test Condition Brownout reference voltage for comparator C14 VBO_ref 0.80 0.90 1.00 V Blanking time voltage lower limit for Comparator C3 VBKC3 0.80 0.90 1.00 V Blanking time voltage upper limit for Comparator C11 VBKC11 4.28 4.50 4.72 V Over Load Limit for Comparator C4 VFBC4 4.28 4.50 4.72 V Entry Burst select High level for Comparator C19 VFBC19 4.28 4.50 4.72 V Entry Burst select Low level for Comparator C20 VFBC20 0.40 0.50 0.60 V 10% Pin_max VFB_burst1 1.51 1.60 1.69 V < 7 counts 6.67% Pin_max VFB_burst2 1.34 1.42 1.50 V 8 ~ 39 counts 4.38% Pin_max VFB_burst3 1.20 1.27 1.34 V 40 ~ 191 counts Active Burst Mode High Level for Comparator C6a VFBC6a 3.35 3.50 3.65 V In Active Burst Mode Active Burst Mode Low Level for Comparator C6b VFBC6b 3.06 3.20 3.34 V Active Burst Mode Level for Comparator C13 VFBC13 3.85 4.00 4.15 V Overvoltage Detection Limit for Comparator C1 VVCCOVP1 19.5 20.5 21.5 V Overvoltage Detection Limit for Comparator C2 VVCCOVP2 25.0 25.5 26.3 V VAE 0.25 0.40 0.45 V Charging current for extended blanking time Ichg_EB 480 720 864 mA Charging current for brownout Ichg_BO 9.0 10.0 10.8 mA TjSD 130 140 150 °C TjSD_hys - 50 - °C Built-in Blanking Time for Overload Protection or enter Active Burst Mode tBK - 20 - ms Timer for entry burst select tEBS - 1 - ms Spike Blanking Time for Auto-Restart Protection tSpike - 30 - ms Active Burst Mode Entry Level for Comparator C5 Auto-restart enable reference voltage for Comparator C9 Thermal Shutdown1) Hysteresis for thermal Shutdown 1) 1) VFBB = 5V, during soft start Controller The parameter is not subjected to production test - verified by design/characterization. The thermal shutdown temperature refers to the junction temperature of the controller. Note: The trend of all the voltage levels in the Control Unit is the same regarding the deviation except VVCCOVP Version 2.1a 25 11 Jan 2012 CoolSET®-F3R80 ICE3BR2280JZ Electrical Characteristics and VVCCPD 4.3.6 Current Limiting Parameter Symbol Limit Values Unit Test Condition min. typ. max. Vcsth 0.99 1.06 1.13 V dVsense / dt = 0.6V/ms (Figure 20) Peak Current 20% Pin_max Limitation during Active Burst Mode 13.3% Pin_max 9.6% Pin_max Vcsth_burst1 0.39 0.45 0.51 V < 7 counts Vcsth_burst2 0.32 0.37 0.44 V 8 ~ 39 counts Vcsth_burst3 0.25 0.31 0.37 V 40 ~ 191 counts Leading Edge Blanking Normal mode tLEB_normal - 220 - ns Burst mode tLEB_burst - 180 - ns ICSbias -1.5 -0.2 - mA Peak Current Limitation (incl. Propagation Delay) CS Input Bias Current 4.3.7 VCS =0V CoolMOS® Section Parameter Symbol Limit Values Unit Test Condition min. typ. max. V(BR)DSS 800 870 - - V V Tj = 25°C Tj = 110°C1) Drain Source On-Resistance RDSon - 2.26 5.02 6.14 2.62 5.81 7.10 W W W Tj = 25°C Tj=125°C1) Tj=150°C1) at ID = 0.81A Effective output capacitance, energy related Co(er) - 16.3 - pF VDS = 0V to 480V trise - 302) - ns - 2) - ns Drain Source Breakdown Voltage Rise Time Fall Time tfall 30 1) The parameter is not subjected to production test - verified by design/characterization 2) Measured in a Typical Flyback Converter Application Version 2.1a 26 11 Jan 2012 CoolSET®-F3R80 ICE3BR2280JZ CoolMOS® Performance Characteristic 5 CoolMOS® Performance Characteristic Figure 33 Safe Operating Area (SOA) curve for ICE3BR2280JZ Figure 34 SOA temperature derating coefficient curve Version 2.1a 27 11 Jan 2012 CoolSET®-F3R80 ICE3BR2280JZ CoolMOS® Performance Characteristic Figure 35 Power dissipation; Ptot=f(Ta) Figure 36 Drain-source breakdown voltage; VBR(DSS)=f(Tj), ID=0.25mA Version 2.1a 28 11 Jan 2012 CoolSET®-F3R80 ICE3BR2280JZ Input Power Curve 6 Input Power Curve Two input power curves giving the typical input power versus ambient temperature are showed below; Vin=85Vac~265Vac (Figure 37) and Vin=230Vac+/-15% (Figure 38). The curves are derived based on a typical discontinuous mode flyback model which considers either 60% maximum duty ratio or 150V maximum secondary to primary reflected voltage (higher priority). The calculation is based on no copper area as heatsink for the device. The input power already includes the power loss at input common mode choke, bridge rectifier and the CoolMOS.The device saturation current (ID_Puls @ Tj=125°C) is also considered. To estimate the output power of the device, it is simply multiplying the input power at a particular operating ambient temperature with the estimated efficiency for the application. For example, a wide range input voltage (Figure 37), operating temperature is 50°C, estimated efficiency is 85%, then the estimated output power is 23W (28W * 85%). Figure 37 Input power curve Vin=85~265Vac; Pin=f(Ta) Figure 38 Input power curve Vin=230Vac+/-15%; Pin=f(Ta) Version 2.1a 29 11 Jan 2012 CoolSET®-F3R80 ICE3BR2280JZ Outline Dimension 7 Outline Dimension PG-DIP-7 (Plastic Dual In-Line Outline) Figure 39 PG-DIP-7 (Pb-free lead plating Plastic Dual-in-Line Outline) Version 2.1a 30 11 Jan 2012 CoolSET®-F3R80 ICE3BR2280JZ Marking 8 Marking Marking Figure 40 Marking for ICE3BR2280JZ Version 2.1a 31 11 Jan 2012 CoolSET®-F3R80 ICE3BR2280JZ Schematic for recommended PCB layout 9 Figure 41 Schematic for recommended PCB layout Schematic for recommended PCB layout General guideline for PCB layout design using F3 CoolSET (refer to Figure 41): 1. “Star Ground “at bulk capacitor ground, C11: “Star Ground “means all primary DC grounds should be connected to the ground of bulk capacitor C11 separately in one point. It can reduce the switching noise going into the sensitive pins of the CoolSET device effectively. The primary DC grounds include the followings. a. DC ground of the primary auxiliary winding in power transformer, TR1, and ground of C16 and Z11. b. DC ground of the current sense resistor, R12 c. DC ground of the CoolSET device, GND pin of IC11; the signal grounds from C13, C14, C15 and collector of IC12 should be connected to the GND pin of IC11 and then “star “connect to the bulk capacitor ground. d. DC ground from bridge rectifier, BR1 e. DC ground from the bridging Y-capacitor, C4 2. High voltage traces clearance: High voltage traces should keep enough spacing to the nearby traces. Otherwise, arcing would incur. a. 400V traces (positive rail of bulk capacitor C11) to nearby trace: > 2.0mm b. 600V traces (drain voltage of CoolSET IC11) to nearby trace: > 2.5mm 3. Filter capacitor close to the controller ground: Filter capacitors, C13, C14 and C15 should be placed as close to the controller ground and the controller pin as possible so as to reduce the switching noise coupled into the controller. Guideline for PCB layout design when >3KV lightning surge test applied (refer to Figure 41): 1. Add spark gap Spark gap is a pair of saw-tooth like copper plate facing each other which can discharge the accumulated charge during surge test through the sharp point of the saw-tooth plate. a. Spark Gap 3 and Spark Gap 4, input common mode choke, L1: Gap separation is around 1.5mm (no safety concern) Version 2.1a 32 11 Jan 2012 CoolSET®-F3R80 ICE3BR2280JZ Schematic for recommended PCB layout b. Spark Gap 1 and Spark Gap 2, Live / Neutral to GROUND: These 2 Spark Gaps can be used when the lightning surge requirement is >6KV. 230Vac input voltage application, the gap separation is around 5.5mm 115Vac input voltage application, the gap separation is around 3mm 2. Add Y-capacitor (C2 and C3) in the Live and Neutral to ground even though it is a 2-pin input 3. Add negative pulse clamping diode, D11 to the Current sense resistor, R12: The negative pulse clamping diode can reduce the negative pulse going into the CS pin of the CoolSET and reduce the abnormal behavior of the CoolSET. The diode can be a fast speed diode such as IN4148. The principle behind is to drain the high surge voltage from Live/Neutral to Ground without passing through the sensitive components such as the primary controller, IC11. Version 2.1a 33 11 Jan 2012 Total Quality Management Qualität hat für uns eine umfassende Bedeutung. Wir wollen allen Ihren Ansprüchen in der bestmöglichen Weise gerecht werden. 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