鈥?/div>
Floating channel up
to +600V or
+1200V
鈥渟oft鈥?over-current shutdown turns off desaturated output
Integrated desaturation circuit
Active biasing on sensing desaturation input
Two stage turn on output for di/dt control
Integrated brake IGBT driver with protection
Voltage feedback sensing function
Separate pull-up/pull-down output drive pins
Matched delay outputs
Under voltage lockout with hysteresis band
Programmable deadtime
Hard shutdown function
Product Summary
V
OFFSET
(max)
I
O
+/-
(min.)
V
OUT
Brake (
I
O
+/-
min.)
Deadtime Asymmetry
Skew (max.)
Deadtime (typ. with
RDT=39K鈩?
DESAT Blanking time (typ.)
DESAT filter time (typ.)
Active bias on Desat input
pin
DSH, DSL input voltage
threshold (typ.)
Soft shutdown duration
time (typ.)
Voltage feedback matching
delay time (max.)
600V or
1200V
220mA / 460mA
12.5V-20V
40mA/80mA
125nsec
1碌sec
4.5碌sec
3.0碌sec
90鈩?/div>
8.0V
6.0碌sec
400nsec
Description
The IR22381Q
and IR21381Q
are high voltage, 3-phase IGBT
driver best suited for AC motor drive applications. Integrated
desaturation logic provides all mode of overcurrent protection,
including ground fault protection. The sensing desaturation input is
provided by active bias stage to reject noise. Soft shutdown is
predominantly initiated in the event of overcurrent followed by turn-
off of all six outputs. A shutdown input is provided for a customized
shutdown function. The DT pin allows external resistor to program
the deadtime. Output drivers have separate turn on/off pins with
two stage turn-on output to achieve the desired di/dt switching level
of IGBT. Voltage feedback provides accurate volt x second
measurement.
Package
64-Lead MQFP w/o 13 leads
Typical Connection
15V
3
VCC
3
To controller
IR22381QPBF
DC bus
VFH1,2,3
VFL1,2,3
DSB
VS1,2,3
DSL1,2,3
LOP1,2,3
LOQ1,2,3
LON1,2,3
COM
U
V
W
(Refer to Lead
Assignments for
correct pin
configuration. This
diagram shows
electrical
connections only)
BR
DT
VSS
1
To motor
LIN1,2,3
HIN1,2,3
FAULT
BRIN
SD
VB1,2,3
DSH1,2,3
HOP1,2,3
HOQ1,2,3
HON1,2,3
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