acpl-32jt, acpl-c87at evaluation driver board for fuji

Broadcom- 1 -

IntroductionThis evaluation driver board is optimized for a Fuji M652 6-in-1 Integrated Gate Bipolar Transistor (IGBT) module rated at 650V, 600A. It features 6 x ACPL-32JT for IGBT gate driving and 1 x ACPL-C87AT for bus voltage sensing.

Figure 1 Evaluation Driver Board for Fuji M652 IGBT

Key Features

Gate Driver

The ACPL-32JT is an Automotive 2.5 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.

An ACPL-32JT 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-32JT has an integrated DC-DC flyback controller that is paired with a flyback transformer to provide a split rail Vcc2 voltage of +15V/–5V with up to 2W of isolated power for driving each IGBT. This distributed power supply architecture removes the need for a separate monolithic power supply.

Bus Voltage Sensing

The ACPL-C87AT 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-C87AT is used with a resistor chain for bus voltage sensing.

ACPL-32JT, ACPL-C87ATEvaluation Driver Board for Fuji M652 6-in-1 IGBT

User Guide

Broadcom- 2 -

ACPL-32JT, ACPL-C87AT User Guide

Board Operation

Power Supply

The board accepts 8V to 18V applied across DC12 to GND1. The nominal voltage is 12V.

PWM Inputs

There are six Pulse Width Modulation (PWM) inputs for driving the IGBT module: PWMLW, PWMHW, PWMLV, PWMHV, PWMLU, PWMHU.

0V: Input Low

5V: Input High (max 5.5V)

Signals are referenced to GND1.

The input LEDs of the ACPL-32JT 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 (5V): 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 (5V): Voltage Normal

Board Design

Gate Driving

Figure 2 Gate Driving

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 (R23 and R24 in Figure 2).

Soft Shutdown

Figure 3 Soft Shutdown

Broadcom- 3 -


The IGBT collector voltage is sensed by the ACPL-32JT gate drivers through the Desat pin. When desaturation events are detected, ACPL-32JT 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

Figure 4 Desat Blanking

The total blanking time is calculated in terms of internal blanking time tDESAT(BLANKING) (0.6 μs typ), external capacitance CBLANK (330 pF), FAULT threshold voltage VDESAT (7V typ), and DESAT charge current ICHG (0.9 mA typ) as follows:

tBLANK = tDESAT(BLANKING) + (CBLANK × VDESAT/ICHG)

= 0.6 μs + (330 pF × 7V/0.9 mA)

~ 3.2 μs

Active Clamp

Figure 5 Active Clamp

A Transient Voltage Suppressor (TVS) rated at 510V 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 6 DC/DC Converter

Each ACPL-32JT Gate Driver integrates a DC/DC converter that provides distributed power to the secondary side.

For DC12 = 8V to 18V, this circuit nominally supports a secondary-side load of up to 60 mA (including Icc2 of ACPL-32JT) at the regulated VCC2 voltage.

Figure 7 Compensation Network

The compensation network is referenced to a nominal transformer of Lp = 60 μH, Ls = 260 μH.

Broadcom- 4 -


Bus Voltage Sensing

Bus voltage is sensed through a precision resistor chain. ACPL-C87AT optically isolates the signal for transmission to a microcontroller (output Voltage Sense Output (VSO) on P1 header).

The Bus Voltage Sense Ratio may be calculated as follows:

Connection Interface (Connector Header P1)

Pin Name Type LEVEL Item Logic

1 FLU OUT TTL Fault Feedback for U-bottom L: Fault

3 ULU OUT TTL Under-Voltage Lock Out Feedback for U-bottom

L: Under-Voltage Lock Out

5 FLV OUT TTL Fault Feedback for V-bottom L: Fault

7 ULV OUT TTL Under-Voltage Lock Out Feedback for V-bottom


9 FLW OUT TTL Fault Feedback for W-bottom L: Fault

11 ULW OUT TTL Under-Voltage Lock Out Feedback for W-bottom


13 UHU OUT TTL Under-Voltage Lock Out Feedback for U-top L: Under-Voltage Lock Out

15 FHU OUT TTL Fault Feedback for U-top L: Fault

17 UHV OUT TTL Under-Voltage Lock Out Feedback for V-top L: Under-Voltage Lock Out

19 FHV OUT TTL Fault Feedback for V-top L: Fault

21 UHW OUT TTL Under-Voltage Lock Out Feedback for W-top L: Under-Voltage Lock Out

23 FHW OUT TTL Fault Feedback for W-top L: Fault

2 PWMLW IN TTL PWM input for W-bottom H: Led on, L: Led off

4 PWMHW IN TTL PWM input for W-top H: Led on, L: Led off

6 PWMLV IN TTL PWM input for V-bottom H: Led on, L: Led off

8 PWMHV IN TTL PWM input for V-top H: Led on, L: Led off

10 PWMLU IN TTL PWM input for U-bottom H: Led on, L: Led off

12 PWMHU IN TTL PWM input for U-top H: Led on, L: Led off

14 DC12 Power 8V to 18V DC power supply —

16 GND1 Ground Ground Low Voltage Side Ground —

18 GND1 Ground Ground Low Voltage Side Ground —

20 VSO OUT Analog (0 to 2V)

Bus Voltage Sensor Output Analog (0 to 2V)

22 OT1 OUT — Connection to IGBT NTC Thermistor Pin T1 —

24 OT2 OUT — Connection to IGBT NTC Thermistor Pin T2 —

Bus Voltage Sense Ratio R146 R147+R142 R143 R144 R145 R146 R147+ + + + +----------------------------------------------------------------------------------------------------------=

2k 2k+200k 200k 200k 200k 2k 2k+ + + + +-------------------------------------------------------------------------------------------=

4.975 mV/V =

Broadcom- 5 -


Circuit Schematic

M652 Driver Board

PWMALU

PWMLVPWMAHU

PWMHV

PWMAHV

PWMHU

PWMALVPWMLU

DC5 0.1uFC161 GND1

PWMLW

PWMHW

PWMAHW

PWMALW

2A3

2Y4

3A5

3Y6

GND7 4Y 8

4A 9

5Y 10

5A 11

6Y 12

6A 13

VCC 14

1Y2

1A1

U12

SN74AC04-Q1

GND1

GND1R162

5K

R163

5K

R164

5K

R1655K

R166 5K

R167 5K

GND1

GND1

GND1

GND1

GND1

FLU

VSO

ULU

GND1

FLV

GND1

ULV

DC12

FLW

PWMHV

ULW

PWMLV

UHU

PWMHW

FHU

PWMLW

UHV

PWMHU

FHV

PWMLU

UHW OT1

FHW OT2

DC5

GND1

C13210uF

GND1

C1110uF

GN

D2

OUT 3VIN1

U11NCV8664ST50T3G

GND1GND1

C131 0.1uF

1

3

2Q161

FCX591A

12

D66MMSZ4689ET1G

1KR161

GND1

VCC1DC12DC5 R13 4K7

R14 4K7

C16 1nF

C17 1nF

DC5

1 2

3 4

5 6

7 8

9 10

11 12

14

16

18

20

22

24

13

15

17

19

21

23

P1

DF11CZ24DS2V22

GND1

GND1

R33 4K7

R34 4K7C36 1nF

C37 1nF

C57 1nF

R54 4K7

R53 4K7C56 1nF

R73 4K7

R74 4K7C76 1nF

C77 1nF

R93 4K7

R94 4K7

C96 1nF

C97 1nF

R113 4K7

R114 4K7

C117 1nF

C116 1nF

GND1

GND1

GND1

GND1

GND1

GND1

GND1

GND1

GND1

GND1

DC5

DC5

DC5

DC5

DC5

DC5

DC5

DC5

DC5

DC5

Broadcom- 6 -


M652 Driver Board: U-Top

R22a51R

1K

R21 12D22

MURA160T3G

GND1

1uFC15330pF

C21

1uFC23a

VEE2HU

12

D23

BAT54XV2T1G CEHU

GHU

VEE11

SW2

VCC13

COMP4

/UVLO5

/FAULT6

AN7

CA8 VEE2 9

SSD/CLAMP 10

VO 11

VCC2 12

VE 13

DESAT 14

LED2+ 15

VEE2 16

U1

ACPL-32JT

VCC1GND1

R12470K

C1422nF

C13330pF

GND1

PWMAHUR15 5K1

VCC2HU

VEE2HUR23

1R

R24

5R1

10uF

C24

1

3

2

Q21PBSS4041NX

1

3

2

Q22PBSS4041PX

R25a

100R

VCC2HU

GHU

VEE2HU

UHU

FHU

C25

10uF

EHU

C

R16 110R

R17 110R

12

D29ES1D

TP21

TP27

1 2

D27

P6SMB510CA

1

3

2

Q23PBSS4041PX

VEE2HU

R27NMC26

33nF

NM

R28

c

R29100R

0RR28a

R25b20R

TP22

1uFC23b

DC5

C27

NM

C28

NM

C29

4.7nF

1

12

D21MBRS1100T3G

1 2

D11MURS105T3G

R112K

C12220nF

1

2

3

4

5 6

7

8

9

10

T1

TRANSFORMER

VCC2HUDC12

VEE2HU

1 2D24

1SMA4744R261K

EHU

C2210uF

TP24

TP23

TP26

TP25

Broadcom- 7 -


M652 Driver Board: U-Bottom

ELU

GLU

GND1

1uFC35330pF

C41

1uFC4351RR42a

VEE2LU

1K

R41

12 B

AT5

4XV

2T1G

D43

EHUVEE11

SW2

VCC13

COMP4

/UVLO5

/FAULT6

AN7

CA8 VEE2 9

SSD/CLAMP 10

VO 11

VCC2 12

VE 13

DESAT 14

LED2+ 15

VEE2 16

U2

ACPL-32JT

VCC1GND1

R32470K

C3422nF

C33330pF

GND1

12

D41MBRS1100T3G

1 2

D31MURS105T3G

R312K

C32220nF

1

2

3

4

5 6

7

8

9

10

T2

TRANSFORMER

VCC2LUDC12

PWMALUR35 5K1

VCC2LU

VEE2LU1R

R43

5R1R44

10uF

C44

1

3

2

Q41PBSS4041NX

1

3

2

Q42

PBSS4041PX

R45a

100R

VCC2LU

GLU

VEE2LU

ULU

FLU

C45

10uF

R47NM33nF

C46

R36 110R

R37 110R

1 2

D441SMA4744 R46

220R

ELU

C4210uF

VEE2LU

12D42

MURA160T3G

12

D49ES1D

TP41

TP43

TP47

TP44

1 2

D47

P6SMB510CA

1

3

2

Q43PBSS4041PX

VEE2LU

NMR48a

100R

R49

0RR48b

TP42

DC5

1uFC43b

R45b20R

C49

4.7nF

C48

NM

C47

NM

TP46

TP45

Broadcom- 8 -


M652 Driver Board: V-Top

EHV

GHV

GND1

1uFC55330pF

C61

1uFC63aR62a51R

VEE2HV

1K

R61

12 B

AT5

4XV

2T1G

D63

CVEE11

SW2

VCC13

COMP4

/UVLO5

/FAULT6

AN7

CA8 VEE2 9

SSD/CLAMP 10

VO 11

VCC2 12

VE 13

DESAT 14

LED2+ 15

VEE2 16

U3

ACPL-32JT

VCC1GND1

R52470K

C5422nF

C53330pF

GND1

12

D61MBRS1100T3G

1 2

D51MURS105T3G

R512K

C52220nF

1

2

3

4

5 6

7

8

9

10

T3

TRANSFORMER

VCC2HVDC12

VEE2HV

PWMAHV R55 5K1

VCC2HV

VEE2HV1R

R63

5R1R64

10uF

C64

1

3

2

Q61PBSS4041NX

1

3

2

Q62PBSS4041PX

R65a

100R

VCC2HV

GHV

UHVFHV

C65

10uF

VEE2HV

R67NM33nF

C66

R56 110R

R57

110R

1 2

D641SMA4744 R66

1K

EHV

C6210uF

12D62

MURA160T3G

12

D69ES1D

TP61

TP67

TP63

TP64

1 2

D67

P6SMB510CA

1

3

2

Q63PBSS4041PX

VEE2HV

0RR68b

NMR68a

100R

R69

TP62

DC5

1uFC63b

R65b20R

C69

4.7nF

C67

NM

C68

NM

TP66

TP65

Broadcom- 9 -


M652 Driver Board: V-Bottom

ELV

GLV

GND1

1uFC75330pF

C81

1uFC83aR82a51R

VEE2LV

1K

R81

12 B

AT5

4XV

2T1G

D83

EHVVEE11

SW2

VCC13

COMP4

/UVLO5

/FAULT6

AN7

CA8 VEE2 9

SSD/CLAMP 10

VO 11

VCC2 12

VE 13

DESAT 14

LED2+ 15

VEE2 16

U4

ACPL-32JT

VCC1GND1

R72470K

C7422nF

C73330pF

GND1

12

D81MBRS1100T3G

1 2

D71MURS105T3G

R712K

C72220nF

1

2

3

4

5 6

7

8

9

10

T4

TRANSFORMER

VCC2LVDC12

VEE2LV

PWMALV R75 5K1

VCC2LV

VEE2LV1R

R83

5R1R84

10uF

C84

1

3

2

Q81PBSS4041NX

1

3

2

Q82PBSS4041PX

R85a

100R

VCC2LV

GLV

VEE2LV

ULVFLV

C85

10uF

R87NM33nF

C86

R76 110R

R77

110R

1 2

D841SMA4744 R86

1K

ELV

C8210uF

12D82

MURA160T3G

12

D89ES1D

TP81

TP83

TP87

TP84

1 2

D87

P6SMB510CA

1

3

2

Q83PBSS4041PX

VEE2LV

0RR88b

NMR88a

100R

R89

TP82

DC5

1uFC83b

R85b20R

C89

4.7nF

C88

NM

C87

NM

TP86

TP85

Broadcom- 10 -


M652 Driver Board: W-Top

EHW

GHW

GND1

1uFC95330pF

C101

1uFC103a R102a51R

VEE2HW

1K

R101

12 B

AT5

4XV

2T1G

D10

3

CVEE11

SW2

VCC13

COMP4

/UVLO5

/FAULT6

AN7

CA8 VEE2 9

SSD/CLAMP 10

VO 11

VCC2 12

VE 13

DESAT 14

LED2+ 15

VEE2 16

U5

ACPL-32JT

VCC1GND1

R92470K

C9422nF

C93330pF

GND1

12

D101MBRS1100T3G

1 2

D91MURS105T3G

R912K

C92220nF

1

2

3

4

5 6

7

8

9

10

T5

TRANSFORMER

VCC2HWDC12

VEE2HW

PWMAHW R95 5K1

VCC2HW

VEE2HW1R

R103

5R1R104

10uF

C104

1

3

2

Q101PBSS4041NX

1

3

2

Q102PBSS4041PX

R105a

100R

VCC2HW

GHW

VEE2HW

UHWFHW

C105

10uF

R107NM33nF

C106

R96 110R

R97

110R

1 2

D1041SMA4744 R106

1K

EHW

C10210uF

12D102

MURA160T3G

12

D109ES1D

TP101

TP103

TP107

TP104

1 2

D107

P6SMB510CA

1

3

2

Q103PBSS4041PX

VEE2HW

0RR108b

NMR108a

100RR109

TP102

DC5

1uFC103b

R105b

20RC109

4.7nF

C108

NM

C107

NM

TP106

TP105

Broadcom- 11 -


M652 Driver Board: W-Bottom

ELW

GLW

GND1

1uFC115330pF

C122

1uFC123aR122a51R

VEE2LW

1K

R121

12 B

AT5

4XV

2T1G

D12

3

EHWVEE11

SW2

VCC13

COMP4

/UVLO5

/FAULT6

AN7

CA8 VEE2 9

SSD/CLAMP 10

VO 11

VCC2 12

VE 13

DESAT 14

LED2+ 15

VEE2 16

U6

ACPL-32JT

VCC1GND1

R112470K

C11422nF

C113330pF

GND1

12

D121MBRS1100T3G

1 2

D111MURS105T3G

R1112K

C112220nF

1

2

3

4

5 6

7

8

9

10

T6

TRANSFORMER

VCC2LWDC12

VEE2LW

PWMALW R115 5K1

VCC2LW

VEE2LW1R

R123

5R1R124

10uF

C124

1

3

2

Q121PBSS4041NX

1

3

2

Q122PBSS4041PX

R125a

100R

VCC2LW

GLW

VEE2LW

ULWFLW

C125

10uF

R127NM33nF

C126

R116110R

R117

110R

1 2

D1241SMA4744 R126

1K

ELW

C12110uF

12D122

MURA160T3G

12

D129ES1D

TP121

TP123

TP127

TP124

1 2

D127

P6SMB510CA

1

3

2

Q123PBSS4041PX

VEE2LW

0RR128b

NMR128a

100R

R129

TP122

DC5

1uFC123b

R125b20R

C129

4.7nF

C127

NM

C128

NM

TP126

TP125

Broadcom- 12 -


M652 Driver Board: Bus Voltage Sensing

VDD11

VIN+2

SD3

GND14 GND2 5

VOUT- 6

VOUT+ 7

VDD2 8VDD1

VIN+

SD

GND1 GND2

VOUT-

VOUT+

VDD2

U7

ACPL-C87AT

20K

R152

20K

R153

20KR155

20KR154

1uFC143

R146

2K 0.1%

R145200K 0.1%

1

V-4

3

2

5

6

7V+ 8

U31OPA2171AIDR

R144200K 0.1%

R143200K 0.1%

R142200K 0.1%

R1472K 0.1%

1uF

C151

2KR157

10KR156

0.1uFC155

1nFC152

0.1uF

C15439RR148

10nFC144

1nFC153

ELU

C

C14210uF

VCC2LU

GND1

GND1GND1

GND1

GND1 GND1

VSO

10RR141

10RR151

DC5

GN

D2

OUT 3VIN1

U21NCV8664ST50T3G

C1410.1uF

ELU

R158

0R

GND1

NM

R159

ELU ELU

ELU

ELU

10RR168

DC5

Broadcom- 13 -


Board Dimensions

Broadcom- 14 -


Component Location — Top

Broadcom- 15 -


Component Location — Bottom

For product information and a complete list of distributors, please go to our web site: www.broadcom.com.

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 © 2017 Broadcom. All Rights Reserved.

The term "Broadcom" refers to Broadcom Limited and/or its subsidiaries. For more information, please visit www.broadcom.com.

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 24, 2017 – ACPL-32JT-C87AT-UG100

acpl-32jt, acpl-c87at evaluation driver board for fuji

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