ISO-9001 CERTIFIED BY DSCC
20 AMP, 200 VOLT MOSFET
SMART POWER 3-PHASE MOTOR
DRIVE POWER HYBRID
M.S.KENNEDY CORP.
M.S. KENNEDY CORP.
4707 Dey Road Liverpool, N.Y. 13088
4322
(315) 701-6751
FEATURES:
MIL-PRF-38534 QUALIFIED
200V, 20 Amp Capability
Ultra Low Thermal Resistance - Junction to Case - 1.0°C/W (Each MOSFET)
Self-Contained, Smart Lowside/Highside Drive Circuitry
Under-Voltage Lockout, Internal 2µS Deadtime
Capable of Switching Frequencies to 25KHz
Isolated Case Allows Direct Heat Sinking
Case Bolt-down Design Allows Superior Heat Dissipation
DESCRIPTION:
The MSK 4322 is a 20 Amp, 3 Phase Bridge Smart Power Motor Drive Hybrid with a 200 volt rating on the
output switches. The output switches are power MOSFETs with intrinsic fast-recovery diodes for the free-
wheeling currents of motor drives. This new smart power motor drive hybrid is compatible with 5V CMOS or
TTL logic levels. The internal circuitry prevents simultaneous turn-on of the in-line half bridge transistors with a
built-in 2µS deadtime to prevent shoot-through. Undervoltage lockout shuts down the bridge when the supply
voltage gets to a point of incomplete turn-on of the output switches. The internal high-side boot strap power
supply derived from the +15 volt supply completely eliminates the need for 3 floating independent power sup-
plies for the high-side drive. Current sense circuitry is provided to sense current from an external resistor to shut
down the bridge for overcurrent.
EQUIVALENT SCHEMATIC
TYPICAL APPLICATIONS
TYPICAL APPLICATIONSPIN-OUT INFORMATION
PIN-OUT INFORMATION
1
2
3
4
5
6
7
8
9
10
VCC
AØHIN
BØHIN
CØHIN
AØLIN
FAULT
CØLIN
BØLIN
VSS
ITRIP
20
19
18
17
16
15
14
13
12
11
N/C
AØ
V+
N/C
N/C
BØ
N/C
N/C
CØ
COM
3 PHASE SIX STEP DC BRUSHLESS MOTOR DRIVE
OR 3 PHASE SINUSOIDAL INDUCTION MOTOR DRIVE
1
PRELIMINARY Rev. A 6/00
MSK [ M.S. KENNEDY CORPORATION ]
