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Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697-1800 (724) 925-7272
VLA503-01
Hybrid IC IGBT Gate Driver
long enough so that the voltage on the detect Pin 1 is
START
greater than V SC at the end of the t TRIP delay the driver
will erroneously indicate that a short circuit has occurred.
IS
VCE > VSC
YES
IS
INPUT
SIGNAL
ON
YES
DELAY
NO
NO
To avoid this condition the VLA503-01 has provisions for
extending the t TRIP delay by connecting a capacitor
(C TRIP ) between Pin 2 and V CC (Pins 4). The effect of
adding C TRIP on trip time is shown in Figure 3. If t TRIP
is extended care must be exercised not to exceed the
short-circuit withstanding capability of the IGBT mod-
ule. 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.
ttrip
FAULT SIGNAL
ttimer
IS
YES
(PIN 8)
ttrip
10V
10V
VCE > VSC
YES
SLOW SHUTDOWN
DISABLE OUTPUT
SET FAULT SIGNAL
WAIT ttimer
YES
IS
INPUT
SIGNAL
OFF
NO
NO
-5V
VO
(PIN 5)
Figure 3. Adjustment of ttrip
YES
CLEAR FAULT
SIGNAL
ENABLE OUTPUT
Figure 2. VLA503-01 Desaturation Detector
Rev. 04/07
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相关PDF资料
VLA504-01
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相关代理商/技术参数
VLA503-01R
制造商:ISAHAYA 制造商全称:Isahaya Electronics Corporation 功能描述:DRIVER FOR IGBT MODULES
VLA504-01
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制造商:POWEREX 制造商全称:Powerex Power Semiconductors 功能描述:Hybrid IC IGBT Gate Driver
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制造商:POWEREX 制造商全称:Powerex Power Semiconductors 功能描述:BG2C-Universal Gate Drive Prototype Board
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制造商:ISAHAYA 制造商全称:Isahaya Electronics Corporation 功能描述:HYBRID IC DRIVER FOR IGBT MODULES
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