Broadcom ACPL-C87AT, ACPL-32JT User Manual

Page 1
ACPL-32JT, ACPL-C87AT
Evaluation Driver Board for Fuji M652 6-in-1 IGBT
User Guide

Introduction

This 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
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.

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.

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.

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
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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

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).

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
Broadcom

Soft Shutdown

Figure 3 Soft Shutdown
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ACPL-32JT, ACPL-C87AT User Guide
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.
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ACPL-32JT, ACPL-C87AT User Guide
Bus Voltage Sense Ratio
R146 R147+
R142 R143 R144 R145 R146 R147+++++
----------------------------------------------------------------------------------------------------------
=
2k 2k+
200k 200k 200k 200k 2k 2k+++++
-------------------------------------------------------------------------------------------
=
4.975 mV/V =

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 Typ e LEVEL Item Logic
1 FLU OUT TTL Fault Feedback for U-bottom L: Fault
3 ULU OUT TTL Under-Voltage Lock Out Feedback for
5 FLV OUT TTL Fault Feedback for V-bottom L: Fault
7 ULV OUT TTL Under-Voltage Lock Out Feedback for
9 FLW OUT TTL Fault Feedback for W-bottom L: Fault
11 ULW OUT TTL Under-Voltage Lock Out Feedback for
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)
22 OT1 OUT Connection to IGBT NTC Thermistor Pin T1
24 OT2 OUT Connection to IGBT NTC Thermistor Pin T2
U-bottom
V-bottom
W-bottom
Bus Voltage Sensor Output Analog (0 to 2V)
L: Under-Voltage Lock Out
L: Under-Voltage Lock Out
L: Under-Voltage Lock Out
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ACPL-32JT, ACPL-C87AT User Guide

Circuit Schematic

M652 Driver Board

GND1
GND1
GND1
GND1
GND1
GND1
GND1
GND1
GND1
GND1
GND1
GND1
DC5
C36 1nF
DC5
C37 1nF
DC5
C76 1nF
DC5
C77 1nF
DC5
C116 1nF
DC5
C117 1nF
C16 1nF
DC5
C17 1nF
DC5
C56 1nF
DC5
C57 1nF
DC5
C96 1nF
DC5
C97 1nF
R34 4K7
R33 4K7
R74 4K7
R73 4K7
R114 4K7
R113 4K7
4K7
4K7
R14
R53 4K7
R54 4K7
R93 4K7
R94 4K7
P1
FLU
1 2
ULU
3 4
FLV
5 6
ULV
7 8
FLW
9 10
ULW
11 12
UHU
13
FHU
15
UHV
17
FHV
19
UHW OT1
21
FHW OT2
23
DF11CZ24DS2V22
PWMLW
PWMHW
PWMLV
14
16
18
20
22
24
PWMHV
PWMLU
PWMHU
DC12
GND1
GND1
VSO
GND1
C11 10uF
1
GND1
Q161
2
FCX591A
3
R161
1K
1
D66 MMSZ4689ET1G
2
U11
NCV8664ST50T3G
0.1uF
1
VIN
OUT
GND
2
GND1GND1
VCC1DC12DC5 R13
C131
DC5
3
C132
10uF
GND1
GND1
GND1
GND1
R162
5K
R163
5K
R164
5K
PWMHU
PWMALU
PWMHV
PWMAHV
GND1
1
2
3
4
5
6
7
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U12
1A
1Y
2A
2Y
3A
3Y
GND
SN74AC04-Q1
VCC
DC5
14
PWMLVPWMAHU
13
6A
PWMALVPWMLU
12
6Y
11
PWMLW
5A
10
PWMALW
5Y
9
PWMHW
4A
8
PWMAHW
4Y
C161
0.1uF
5K
R165
R166 5K
R167 5K
GND1
GND1
GND1
GND1
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ACPL-32JT, ACPL-C87AT User Guide
R22a
51R
1K
R21
12
D22
MURA160T3G
GND1
1uF
C15
330pF
C21
1uF
C23a
VEE2HU
12
D23
BAT54XV2T1G
C
EHU
GHU
VEE1
1
SW
2
VCC1
3
COMP
4
/UVLO
5
/FAULT
6
AN
7
CA
8
VEE2
9
SSD/CLAMP
10
VO
11
VCC2
12
VE
13
DESAT
14
LED2+
15
VEE2
16
U1
ACPL-32JT
VCC1
GND1
R12 470K
C14 22nF
C13
330pF
GND1
PWMAHU
R15 5K1
VCC2HU
VEE2HU
R23
1R
R24
5R1
10uF
C24
1
3
2
Q21
PBSS4041NX
1
3
2
Q22
PBSS4041PX
R25a
100R
VCC2HU
GHU
VEE2HU
UHU
FHU
C25
10uF
EHU
C
R16
110R
R17
110R
12
D29 ES1D
TP21
TP27
1 2
D27
P6SMB510CA
1
3
2
Q23 PBSS4041PX
VEE2HU
R27 NM
C26
33nF
NM
R28c
R29
100R
0R
R28a
R25b 20R
TP22
1uF
C23b
DC5
C27
NM
C28
NM
C29
4.7nF
1
12
D21
MBRS1100T3G
1 2
D11
MURS105T3G
R112KC12
220nF
1
2
3
4
5 6
7
8
9
10
T1
TRANSFORMER
VCC2HU
DC12
VEE2HU
1 2
D24
1SMA4744
R26
1K
EHU
C22 10uF
TP24
TP23
TP26
TP25

M652 Driver Board: U-Top

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ACPL-32JT, ACPL-C87AT User Guide
ELU
GLU
GND1
1uF
C35
330pF
C41
1uF
C43
51R
R42a
VEE2LU
1K
R41
1
2
BAT54XV2T1G
D43
EHU
VEE1
1
SW
2
VCC1
3
COMP
4
/UVLO
5
/FAULT
6
AN
7
CA
8
VEE2
9
SSD/CLAMP
10
VO
11
VCC2
12
VE
13
DESAT
14
LED2+
15
VEE2
16
U2
ACPL-32JT
VCC1
GND1
R32 470K
C34 22nF
C33
330pF
GND1
12
D41
MBRS1100T3G
1 2
D31
MURS105T3G
R312KC32
220nF
1
2
3
4
5 6
7
8
9
10
T2
TRANSFORMER
VCC2LU
DC12
PWMALU
R35 5K1
VCC2LU
VEE2LU
1R
R43
5R1
R44
10uF
C44
1
3
2
Q41
PBSS4041NX
1
3
2
Q42
PBSS4041PX
R45a
100R
VCC2LU
GLU
VEE2LU
ULU
FLU
C45
10uF
R47 NM
33nF
C46
R36
110R
R37 110R
1 2
D44
1SMA4744
R46 220R
ELU
C42 10uF
VEE2LU
12
D42
MURA160T3G
12
D49 ES1D
TP41
TP43
TP47
TP44
1 2
D47
P6SMB510CA
1
3
2
Q43 PBSS4041PX
VEE2LU
NM
R48a
100R
R49
0R
R48b
TP42
DC5
1uF
C43b
R45b 20R
C49
4.7nF
C48
NM
C47
NM
TP46
TP45

M652 Driver Board: U-Bottom

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ACPL-32JT, ACPL-C87AT User Guide
EHV
GHV
GND1
1uF
C55
330pF
C61
1uF
C63a
R62a
51R
VEE2HV
1K
R61
12
BAT54XV2T1G
D63
C
VEE1
1
SW
2
VCC1
3
COMP
4
/UVLO
5
/FAULT
6
AN
7
CA
8
VEE2
9
SSD/CLAMP
10
VO
11
VCC2
12
VE
13
DESAT
14
LED2+
15
VEE2
16
U3
ACPL-32JT
VCC1
GND1
R52 470K
C54 22nF
C53
330pF
GND1
12
D61
MBRS1100T3G
1 2
D51
MURS105T3G
R512KC52
220nF
1
2
3
4
5 6
7
8
9
10
T3
TRANSFORMER
VCC2HV
DC12
VEE2HV
PWMAHV
R55 5K1
VCC2HV
VEE2HV
1R
R63
5R1
R64
10uF
C64
1
3
2
Q61
PBSS4041NX
1
3
2
Q62
PBSS4041PX
R65a
100R
VCC2HV
GHV
UHV FHV
C65
10uF
VEE2HV
R67 NM
33nF
C66
R56
110R
R57
110R
1 2
D64
1SMA4744
R66 1K
EHV
C62 10uF
12
D62
MURA160T3G
1
2
D69 ES1D
TP61
TP67
TP63
TP64
1 2
D67
P6SMB510CA
1
3
2
Q63 PBSS4041PX
VEE2HV
0R
R68b
NM
R68a
100R
R69
TP62
DC5
1uF
C63b
R65b 20R
C69
4.7nF
C67
NM
C68
NM
TP66
TP65

M652 Driver Board: V-Top

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ACPL-32JT, ACPL-C87AT User Guide
ELV
GLV
GND1
1uF
C75
330pF
C81
1uF
C83a
R82a
51R
VEE2LV
1K
R81
12
BAT54XV2T1G
D83
EHV
VEE1
1
SW
2
VCC1
3
COMP
4
/UVLO
5
/FAULT
6
AN
7
CA
8
VEE2
9
SSD/CLAMP
10
VO
11
VCC2
12
VE
13
DESAT
14
LED2+
15
VEE2
16
U4
ACPL-32JT
VCC1
GND1
R72 470K
C74 22nF
C73
330pF
GND1
12
D81
MBRS1100T3G
1 2
D71
MURS105T3G
R712KC72
220nF
1
2
3
4
5 6
7
8
9
10
T4
TRANSFORMER
VCC2LV
DC12
VEE2LV
PWMALV
R75 5K1
VCC2LV
VEE2LV
1R
R83
5R1
R84
10uF
C84
1
3
2
Q81
PBSS4041NX
1
3
2
Q82
PBSS4041PX
R85a
100R
VCC2LV
GLV
VEE2LV
ULV FLV
C85
10uF
R87 NM
33nF
C86
R76
110R
R77
110R
1 2
D84
1SMA4744
R86 1K
ELV
C82 10uF
12
D82
MURA160T3G
1
2
D89 ES1D
TP81
TP83
TP87
TP84
1 2
D87
P6SMB510CA
1
3
2
Q83 PBSS4041PX
VEE2LV
0R
R88b
NM
R88a
100R
R89
TP82
DC5
1uF
C83b
R85b 20R
C89
4.7nF
C88
NM
C87
NM
TP86
TP85

M652 Driver Board: V-Bottom

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ACPL-32JT, ACPL-C87AT User Guide
EHW
GHW
GND1
1uF
C95
330pF
C101
1uF
C103a R102a
51R
VEE2HW
1K
R101
12
BAT54XV2T1G
D103
C
VEE1
1
SW
2
VCC1
3
COMP
4
/UVLO
5
/FAULT
6
AN
7
CA
8
VEE2
9
SSD/CLAMP
10
VO
11
VCC2
12
VE
13
DESAT
14
LED2+
15
VEE2
16
U5
ACPL-32JT
VCC1
GND1
R92 470K
C94 22nF
C93
330pF
1
12
D101
MBRS1100T3G
1 2
D91
MURS105T3G
R91 2K
C92 220nF
1
2
3
4
5 6
7
8
9
10
T5
TRANSFORMER
VCC2HW
DC12
VEE2HW
PWMAHW
R95 5K1
VCC2HW
VEE2HW
1R
R103
5R1
R104
10uF
C104
1
3
2
Q101
PBSS4041NX
1
3
2
Q102
PBSS4041PX
R105a
100R
VCC2HW
GHW
VEE2HW
UHW FHW
C105
10uF
R10 NM33nF
C106
R96
110R
R97
110R
1 2
D104
1SMA4744
R106 1K
EHW
C102 10uF
12
D102
MURA160T3G
12
D109 ES1D
TP101
TP103
TP107
TP104
1 2
D107
P6SMB510CA
1
3
2
Q103 PBSS4041PX
VEE2HW
0R
R108b
NM
R108a
100R
R109
TP102
DC5
1uF
C103b
R105b
20R
C109
4.7nF
C108
NM
C107
NM
TP106
TP105

M652 Driver Board: W-Top

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7
GND
Page 11
ACPL-32JT, ACPL-C87AT User Guide
ELW
GLW
GND1
1uF
C115
330pF
C122
1uF
C123a
R122a
51R
VEE2LW
1K
R121
12
BAT54XV2T1G
D123
EHW
VEE1
1
SW
2
VCC1
3
COMP
4
/UVLO
5
/FAULT
6
AN
7
CA
8
VEE2
9
SSD/CLAMP
10
VO
11
VCC2
12
VE
13
DESAT
14
LED2+
15
VEE2
16
U6
ACPL-32JT
VCC1
GND1
R112 470K
C114 22nF
C113
330pF
GND
1
12
D121
MBRS1100T3G
1 2
D111
MURS105T3G
R1112KC112
220nF
1
2
3
4
5 6
7
8
9
10
T6
TRANSFORMER
VCC2LW
DC12
VEE2LW
PWMALW
R115 5K1
VCC2LW
VEE2LW
1R
R123
5R1
R124
10uF
C124
1
3
2
Q121
PBSS4041NX
1
3
2
Q122
PBSS4041PX
R125a
100R
VCC2LW
GLW
VEE2LW
ULW FLW
C125
10uF
R127 NM
33nF
C126
R116
110R
R117
110R
1 2
D124
1SMA4744
R126 1K
ELW
C121 10uF
12
D122
MURA160T3G
1
2
D129 ES1D
TP121
TP123
TP127
TP124
1 2
D127
P6SMB510CA
1
3
2
Q123 PBSS4041PX
VEE2LW
0R
R128b
NM
R128a
100R
R129
TP122
DC5
1uF
C123b
R125b 20R
C129
4.7nF
C127
NM
C128
NM
TP126
TP125

M652 Driver Board: W-Bottom

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Page 12
VDD1
1
VIN+
2
SD
3
GND14GND2
5
VOUT-
6
VOUT+
7
VDD2
8
VDD
N
T
U7
ACPL-C87AT
20K
R152
20K
R153
20KR155
20KR154
1uF
C143
R146
2K 0.1%
R145
200K 0.1%
1
V-
4
3
2
5
6
7
V+
8
U31
OPA2171AIDR
R144
200K 0.1%
R143
200K 0.1%
R142
200K 0.1%
R147
2K 0.1%
1uF
C151
2K
R157
10K
R156
0.1uF
C155
1nF
C152
0.1uF
C154
39R
R148
10nF
C144
1nFC153
ELU
C
C142
10uF
VCC2LU
GND1
GND1
GND1
GND1
GND1 GND1
VSO
10R
R141
10R
R151
DC5
GND
2
OUT
3
VIN
1
U21
NCV8664ST50T3G
C141
0.1uF
ELU
R158
0R
GND1
NM
R159
ELU ELU
ELU
ELU
10R
R168
DC5
ACPL-32JT, ACPL-C87AT User Guide

M652 Driver Board: Bus Voltage Sensing

ND
U
ND
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ACPL-32JT, ACPL-C87AT User Guide

Board Dimensions

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ACPL-32JT, ACPL-C87AT User Guide

Component Location — Top

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ACPL-32JT, ACPL-C87AT User Guide

Component Location — Bottom

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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
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