IR2238Q_15 Datasheet, PDF (1/17 Pages) International Rectifier – 3-PHASE AC Motor Controller IC

Data Sheet No. PD60228
IR2238Q
Features
3-PHASE AC Motor Controller IC
• Floating channel up to +1200V
• “soft” over-current shutdown turns off output
• Integrated desaturation circuit
• 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
VOFFSET
IO+/- (min.)
VOUT
Brake (Io+/- min)
1200V max.
220mA/460mA
12.5V - 20V
40mA/80mA
Deadtime Asymmetry Skew (max.) 145nsec
Deadtime (typ. with RDT=39kΩ)
1µsec
DESAT Blanking time (typ.)
3.0µsec
Description
The IR2238Q is a 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. Soft shut-
down is predominantly initiated in the event of
overcurrent followed by turn-off of all six outputsf. A
shutdown input is provided for a customized shut-
down 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 volts *seconds
measurement.
DSH, DSL input voltage
threshold (typ.)
Soft shutdown duration time (typ.)
Voltage feedback matching
delay time (max.)
Package
64-Lead MQFP
8.0V
6.0µsec
125nsec
Block
Diagram
DC
BUS
(Refer to Lead
Assignments for
correct pin
configuration).
This diagram
shows electrical
connections only.
15V
3
3
uP,Control
VCC
VCC
VB1,2,3
LIN1,2,3
HIN1,2,3
FAULT
BRIN
HOP1,2,3
HOQ1,2,3
HON1,2,3
IR2238Q ^SD
DSH1,2,3
VFH1,2,3
VS1,2,3
VCC
VFL1,2,3
LOP1,2,3
DSB
BR
DT
VSS
LOQ1,2,3
LON1,2,3
DSL1,2,3
COM
W
V Motor
U
www.irf.com
1