M57962K Powerex Power Semiconductors, M57962K Datasheet - Page 6

• Manufacturer Part Number: M57962K
• Description: Hybrid Integrated Circuit
• Manufacturer: Powerex Power Semiconductors

6
Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697 [phone]
M57962K
Hybrid IC for IGBT Gate Driver
Figure 2. VLA504-01 Desaturation Detector
SET FAULT SIGNAL
SLOW SHUTDOWN
DISABLE OUTPUT
ENABLE OUTPUT
CLEAR FAULT
V CE > V SC
V CE > V SC
WAIT t timer
SIGNAL
SIGNAL
START
SIGNAL
DELAY
INPUT
INPUT
OFF
t trip
ON
IS
IS
IS
IS
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
delay time of the IGBT will also increase. If the delay
becomes long enough so that the voltage on the detect
Pin 1 is greater than V
the driver will erroneously indicate that a short circuit
has occurred. To avoid this condition the M57962K has
provisions for extending the t
capacitor (C
effect of adding C
If t
the short-circuit withstanding capability of the IGBT
module. Normally this will be satisfied for Powerex NF and
A-Series IGBT modules as long as the total shut-down
time does not exceed 10µs.
FAULT SIGNAL
TRIP
(PIN 5)
(PIN 8)
-5V
V O
is extended care must be exercised not to exceed
TRIP
Figure 3. Adjustment of t trip
t trip
) between Pin 2 and V
TRIP
10V
SC
on trip time is shown in Figure 3.
at the end of the t
TRIP
t timer
delay by connecting a
CC
(Pins 4). The
TRIP
10V
delay
/06