ACPL-32JT, ACPL-C87AT

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1 ACPL-JT, ACPL-CAT Evaluation Driver Board for Fuji M -in- IGBT Introduction This evaluation driver board is optimized for a Fuji M -in- Integrated Gate Bipolar Transistor (IGBT) module rated at 0V, 00A. It features x ACPL-JT for IGBT gate driving and x ACPL-CAT for bus voltage sensing. Figure Evaluation Driver Board for Fuji M IGBT An ACPL-JT monitors each IGBT for short circuit events by way of the collector voltage and triggers a local fault shutdown sequence when required. A small gate discharge device slowly reduces the short circuit collector current to prevent overvoltage damage. The IGBT is shut off before the dissipated energy can reach destructive levels. Integrated Flyback Controller Each ACPL-JT has an integrated DC-DC flyback controller that is paired with a flyback transformer to provide a split rail Vcc voltage of +V/ V with up to W of isolated power for driving each IGBT. This distributed power supply architecture removes the need for a separate monolithic power supply. Bus Voltage Sensing Key Features Gate Driver The ACPL-CAT is an automotive unity-gain isolated voltage sensor that utilizes superior optical coupling technology, with a sigma-delta analog-to-digital converter, chopper stabilized amplifiers, and a fully differential circuit topology to provide unequaled isolation-mode noise rejection, low offset, high gain accuracy, and stability. An ACPL-CAT is used with a resistor chain for bus voltage sensing. The ACPL-JT is an Automotive. Amp Gate Drive Optocoupler. It features an integrated flyback controller for isolated DC-DC converter, IGBT desaturation sensing, and protection with soft-shutdown. Fault Detection and Protection The power stage of a typical three-phase inverter is susceptible to destructive failures due to overcurrent and overvoltage conditions. Broadcom - -

2 ACPL-JT, ACPL-CAT Board Operation Power Supply The board accepts V to V applied across DC to GND. The nominal voltage is V. Board Design Gate Driving Figure Gate Driving PWM Inputs There are six Pulse Width Modulation (PWM) inputs for driving the IGBT module: PWMLW, PWMHW, PWMLV, PWMHV, PWMLU, PWMHU. 0V: Input Low V: Input High (max.v) Signals are referenced to GND. The input LEDs of the ACPL-JT gate drivers are driven by an on-board current buffer. Desat Fault Feedback There are six Desat Fault feedback outputs, one for each IGBT: FLU, FHU, FLV, FHV, FLW, FHW. When fault on gate driver secondary side is detected, Fault feedback is pulled Low. Low: Desat Fault Detected High (V): No Fault UVLO Feedback There are six Under-Voltage Lock Out (UVLO) feedback outputs, one for each IGBT: ULU, UHU, ULV, UHV, ULW, UHW. When undervoltage on gate driver secondary side is detected, UVLO feedback is pulled Low. Low: Undervoltage Detected High (V): Voltage Normal The Gate Driver output is connected to a push-pull buffer to drive the IGBT gate. The strength of the turn-on and turn-off is controlled by Ron and Roff respectively (R and R in Figure ). Soft Shutdown Figure Soft Shutdown Broadcom - -

3 ACPL-JT, ACPL-CAT The IGBT collector voltage is sensed by the ACPL-JT gate drivers through the Desat pin. When desaturation events are detected, ACPL-JT applies a soft shutdown to the IGBT gate to prevent damage. A PNP buffer transistor is used to customize the shutdown process. The shutdown strength is controlled by Rssd and Cssd. Desat Blanking A Transient Voltage Suppressor (TVS) rated at 0V is placed between the Gate and Collector of the IGBT to provide active clamp protection. Vce of the IGBT is clamped and protected by the TVS. DC/DC Converter Figure DC/DC Converter Figure Desat Blanking The total blanking time is calculated in terms of internal blanking time tdesat(blanking) (0. μs typ), external capacitance CBLANK (0 pf), FAULT threshold voltage VDESAT (V typ), and DESAT charge current ICHG (0. ma typ) as follows: tblank = tdesat(blanking) + (CBLANK VDESAT/ICHG) = 0. μs + (0 pf V/0. ma) ~. μs Active Clamp Figure Active Clamp Each ACPL-JT Gate Driver integrates a DC/DC converter that provides distributed power to the secondary side. For DC = V to V, this circuit nominally supports a secondary-side load of up to 0 ma (including Icc of ACPL-JT) at the regulated VCC voltage. Figure Compensation Network The compensation network is referenced to a nominal transformer of Lp = 0 μh, Ls = 0 μh. Broadcom - -

4 ACPL-JT, ACPL-CAT Bus Voltage Sensing Bus voltage is sensed through a precision resistor chain. ACPL-CAT optically isolates the signal for transmission to a microcontroller (output Voltage Sense Output (VSO) on P header). The Bus Voltage Sense Ratio may be calculated as follows: Bus Voltage Sense Ratio = = R + R R + R + R + R + R + R k + k 00k + 00k + 00k + 00k + k + k =. mv/v Connection Interface (Connector Header P) Pin Name Type LEVEL Item Logic FLU OUT TTL Fault Feedback for U-bottom L: Fault ULU OUT TTL Under-Voltage Lock Out Feedback for L: Under-Voltage Lock Out U-bottom FLV OUT TTL Fault Feedback for V-bottom L: Fault ULV OUT TTL Under-Voltage Lock Out Feedback for L: Under-Voltage Lock Out V-bottom FLW OUT TTL Fault Feedback for W-bottom L: Fault ULW OUT TTL Under-Voltage Lock Out Feedback for L: Under-Voltage Lock Out W-bottom UHU OUT TTL Under-Voltage Lock Out Feedback for U-top L: Under-Voltage Lock Out FHU OUT TTL Fault Feedback for U-top L: Fault UHV OUT TTL Under-Voltage Lock Out Feedback for V-top L: Under-Voltage Lock Out FHV OUT TTL Fault Feedback for V-top L: Fault UHW OUT TTL Under-Voltage Lock Out Feedback for W-top L: Under-Voltage Lock Out FHW OUT TTL Fault Feedback for W-top L: Fault PWMLW IN TTL PWM input for W-bottom H: Led on, L: Led off PWMHW IN TTL PWM input for W-top H: Led on, L: Led off PWMLV IN TTL PWM input for V-bottom H: Led on, L: Led off PWMHV IN TTL PWM input for V-top H: Led on, L: Led off 0 PWMLU IN TTL PWM input for U-bottom H: Led on, L: Led off PWMHU IN TTL PWM input for U-top H: Led on, L: Led off DC Power V to V DC power supply GND Ground Ground Low Voltage Side Ground GND Ground Ground Low Voltage Side Ground 0 VSO OUT Analog (0 to V) Bus Voltage Sensor Output Analog (0 to V) OT OUT Connection to IGBT NTC Thermistor Pin T OT OUT Connection to IGBT NTC Thermistor Pin T Broadcom - -

5 Broadcom - - ACPL-JT, ACPL-CAT Circuit Schematic M Driver Board PWMALU PWMLV PWMAHU PWMHV PWMAHV PWMHU PWMALV PWMLU 0.uF C GND PWMLW PWMHW PWMAHW PWMALW A Y A Y GND Y A Y 0 A Y A VCC Y A U SNAC0-Q GND GND R K R K R K R K R K R K GND GND GND GND GND FLU VSO ULU GND FLV GND ULV DC FLW PWMHV ULW PWMLV UHU PWMHW FHU PWMLW UHV PWMHU FHV PWMLU UHW OT FHW OT GND C 0uF GND C 0uF GND OUT VIN U NCVST0TG GND GND C 0.uF Q FCXA D MMSZETG K R GND VCC DC R K R K C nf C nf 0 0 P DFCZDSV GND GND R K R K C nf C nf C nf R K R K C nf R K R K C nf C nf R K R K C nf C nf R K R K C nf C nf GND GND GND GND GND GND GND GND GND GND

6 Broadcom - - ACPL-JT, ACPL-CAT M Driver Board: U-Top Ra R K R D MURA0TG GND uf C 0pF C uf Ca VEEHU D BATXVTG C EHU GHU VEE SW VCC COMP /UVLO /FAULT AN CA VEE SSD/CLAMP 0 VO VCC VE DESAT LED+ VEE U ACPL-JT VCC GND R 0K C nf C 0pF GND PWMAHU R K VCCHU VEEHU R R R R 0uF C Q PBSS0NX Q PBSS0PX Ra 00R VCCHU GHU VEEHU UHU FHU C 0uF EHU C R 0R R 0R D ESD TP TP D PSMB0CA Q PBSS0PX VEEHU R C nf Rc R 00R 0R Ra Rb 0R TP uf Cb C C C.nF D MBRS00TG D MURS0TG R K C 0nF 0 T TRANSFORMER VCCHU DC VEEHU D SMA R K EHU C 0uF TP TP TP TP

7 Broadcom - - ACPL-JT, ACPL-CAT M Driver Board: U-Bottom ELU GLU GND uf C 0pF C uf C RRa VEELU K R BATXVTG D EHU VEE SW VCC COMP /UVLO /FAULT AN CA VEE SSD/CLAMP 0 VO VCC VE DESAT LED+ VEE U ACPL-JT VCC GND R 0K C nf C 0pF GND D MBRS00TG D MURS0TG R K C 0nF 0 T TRANSFORMER VCCLU DC PWMALU R K VCCLU VEELU R R R R 0uF C Q PBSS0NX Q PBSS0PX Ra 00R VCCLU GLU VEELU ULU FLU C 0uF R nf C R 0R R 0R D SMA R 0R ELU C 0uF VEELU D MURA0TG D ESD TP TP TP TP D PSMB0CA Q PBSS0PX VEELU Ra 00R R 0R Rb TP uf Cb Rb 0R C.nF C C TP TP

8 Broadcom - - ACPL-JT, ACPL-CAT M Driver Board: V-Top EHV GHV GND uf C 0pF C uf Ca Ra R VEEHV K R BATXVTG D C VEE SW VCC COMP /UVLO /FAULT AN CA VEE SSD/CLAMP 0 VO VCC VE DESAT LED+ VEE U ACPL-JT VCC GND R 0K C nf C 0pF GND D MBRS00TG D MURS0TG R K C 0nF 0 T TRANSFORMER VCCHV DC VEEHV PWMAHV R K VCCHV VEEHV R R R R 0uF C Q PBSS0NX Q PBSS0PX Ra 00R VCCHV GHV UHV FHV C 0uF VEEHV R nf C R 0R R 0R D SMA R K EHV C 0uF D MURA0TG D ESD TP TP TP TP D PSMB0CA Q PBSS0PX VEEHV 0R Rb Ra 00R R TP uf Cb Rb 0R C.nF C C TP TP

9 Broadcom - - ACPL-JT, ACPL-CAT M Driver Board: V-Bottom ELV GLV GND uf C 0pF C uf Ca Ra R VEELV K R BATXVTG D EHV VEE SW VCC COMP /UVLO /FAULT AN CA VEE SSD/CLAMP 0 VO VCC VE DESAT LED+ VEE U ACPL-JT VCC GND R 0K C nf C 0pF GND D MBRS00TG D MURS0TG R K C 0nF 0 T TRANSFORMER VCCLV DC VEELV PWMALV R K VCCLV VEELV R R R R 0uF C Q PBSS0NX Q PBSS0PX Ra 00R VCCLV GLV VEELV ULV FLV C 0uF R nf C R 0R R 0R D SMA R K ELV C 0uF D MURA0TG D ESD TP TP TP TP D PSMB0CA Q PBSS0PX VEELV 0R Rb Ra 00R R TP uf Cb Rb 0R C.nF C C TP TP

10 Broadcom ACPL-JT, ACPL-CAT M Driver Board: W-Top EHW GHW GND uf C 0pF C0 uf C0a R0a R VEEHW K R0 BATXVTG D0 C VEE SW VCC COMP /UVLO /FAULT AN CA VEE SSD/CLAMP 0 VO VCC VE DESAT LED+ VEE U ACPL-JT VCC GND R 0K C nf C 0pF GND D0 MBRS00TG D MURS0TG R K C 0nF 0 T TRANSFORMER VCCHW DC VEEHW PWMAHW R K VCCHW VEEHW R R0 R R0 0uF C0 Q0 PBSS0NX Q0 PBSS0PX R0a 00R VCCHW GHW VEEHW UHW FHW C0 0uF R0 nf C0 R 0R R 0R D0 SMA R0 K EHW C0 0uF D0 MURA0TG D0 ESD TP0 TP0 TP0 TP0 D0 PSMB0CA Q0 PBSS0PX VEEHW 0R R0b R0a 00R R0 TP0 uf C0b R0b 0R C0.nF C0 C0 TP0 TP0

11 Broadcom - - ACPL-JT, ACPL-CAT M Driver Board: W-Bottom ELW GLW GND uf C 0pF C uf Ca Ra R VEELW K R BATXVTG D EHW VEE SW VCC COMP /UVLO /FAULT AN CA VEE SSD/CLAMP 0 VO VCC VE DESAT LED+ VEE U ACPL-JT VCC GND R 0K C nf C 0pF GND D MBRS00TG D MURS0TG R K C 0nF 0 T TRANSFORMER VCCLW DC VEELW PWMALW R K VCCLW VEELW R R R R 0uF C Q PBSS0NX Q PBSS0PX Ra 00R VCCLW GLW VEELW ULW FLW C 0uF R nf C R 0R R 0R D SMA R K ELW C 0uF D MURA0TG D ESD TP TP TP TP D PSMB0CA Q PBSS0PX VEELW 0R Rb Ra 00R R TP uf Cb Rb 0R C.nF C C TP TP

12 ACPL-JT, ACPL-CAT M Driver Board: Bus Voltage Sensing VCCLU U NCVST0TG VIN GND OUT C 0.uF C 0uF ELU ELU ELU C 00K 0.% R ELU 00K 0.% R 00K 0.% R 00K 0.% R R K 0.% K 0.% R R C uf ELU C 0nF R ELU R 0R VDD VDD VIN+ VOUT+ SD U VOUT- GND GND ACPL-CAT GND R 0R C uf GND R 0K R 0K C nf R 0K U OPAAIDR V+ V- GND R R 0K R 0R VSO GND C 0.uF R K R 0R R 0K C 0.uF C nf GND GND GND Broadcom - -

13 ACPL-JT, ACPL-CAT Board Dimensions Broadcom - -

14 ACPL-JT, ACPL-CAT Component Location Top Broadcom - -

15 ACPL-JT, ACPL-CAT Component Location Bottom Broadcom - -

16 For product information and a complete list of distributors, please go to our web site: Broadcom, the pulse logo, Connecting everything, Avago Technologies, Avago, and the A logo are among the trademarks of Broadcom in the United States, certain other countries and/or the EU. Copyright 0 Broadcom. All Rights Reserved. The term "Broadcom" refers to Broadcom Limited and/or its subsidiaries. For more information, please visit Broadcom reserves the right to make changes without further notice to any products or data herein to improve reliability, function, or design. Information furnished by Broadcom is believed to be accurate and reliable. However, Broadcom does not assume any liability arising out of the application or use of this information, nor the application or use of any product or circuit described herein, neither does it convey any license under its patent rights nor the rights of others. January, 0 ACPL-JT-CAT-UG00