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HCPL-3160 数据表(PDF) 2 Page - Agilent(Hewlett-Packard)

部件名 HCPL-3160
功能描述  2.0 Amp IGBT Gate Drive Optocoupler with Integrated Over-current Protection and Fault Feedback
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制造商  HP [Agilent(Hewlett-Packard)]
网页  http://www.home.agilent.com
标志 HP - Agilent(Hewlett-Packard)

HCPL-3160 数据表(HTML) 2 Page - Agilent(Hewlett-Packard)

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1-213
Fault Circuit Operation
A typical desaturation protected
IGBT gate drive application
circuit using the HCPL-3160 is
shown in Figure 1. The IGBT
collector to emitter voltage
is monitored through DDESAT.
When the IGPT is on and VDESAT
exceeds the internal reference
voltage of 7 V the IGBT gate is
“softly” turned-off by M2 to
prevent large di/dt generation.
The LED2 driver is also activated,
which drives the internal
feedback LED2 and notifies the
controller of the IGBT fault by
bringing the FAULT output low.
The FAULT output remains
low until RESET is brought low.
(Note if a separate reset line
is not required, RESET can be
connected to Vin on the circuit
board. In this case, the FAULT
output will be reset on the next
PWM cycle that Vin goes low.)
The FAULT output is an open
collector which allows the FAULT
outputs from all the HCPL-3160s
in a drive to be connected
together in a “wired OR” forming
VCC1
Q R
Q S
SHIELD
GND
FAULT
RESET
VIN
ENABLE
VCC1
LED1+
LED1–
GND
BUFFER IC
LED1
R Q
S Q
D
R
I
V
E
R
+
+
+
+
+
VCC2
+
VEE
0.1 µF
VE
DDESAT
VE
RG
CBLANK
TRIPLE
DARLINGTON
UVLO
ICHG
IDSCHG
Q1
VE
VE
7 V
DESAT
M2
1X
VE
VUVLO
12 V/11 V
VE
LED2
SHIELD
R2
(OPTIONAL)
M1
33X
A3
LED2
DRIVER
DETECTOR IC
HCPL-3160
Figure 1. IGBT Gate Drive with Desaturation Protection and Fault Feedback.
a single fault bus for interfacing
with the micro-controller. The
ENABLE input can also be
connected to this fault bus. With
this connection all IGBTs in a
drive are shutdown without
micro-controller intervention
once a fault is detected on a
single IGBT.
CBLANK disables the fault
detection circuitry for a time
period sufficient for normal IGBT
turn-on. CBLANK is held low by
Q1 when the IGBT is off.


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