4707 Dey Road Liverpool, N.Y. 13088

M.S.KENNEDY CORP.

(315) 701-6751

4357

FEATURES:

500V, 28 Amp Capability

Ultra Low Thermal Resistance

Integral Free Wheeling Fast Recovery Epitaxial Diode (FRED)

Self-Contained, Smart Lowside/Highside Drive Circuitry

Under-Voltage Lockout, Internal 2uS Deadtime

Capable of Switching Frequencies to 25KHz

Isolated Case Allows Direct Heat Sinking

Case Bolt-down Design Allows Superior Heat Dissipation

MIL-PRF-38534 CERTIFIED

28 AMP, 500 VOLT IGBT PLUS DIODE

SMART POWER 3-PHASE

MOTOR DRIVE HYBRID

EQUIVALENT SCHEMATIC

DESCRIPTION:

The MSK 4357 is a 28 Amp, 3 Phase Bridge Smart Power Motor Drive Hybrid with a 500 volt rating. The output

switches are Insulated Gate Bipolar Transistors (IGBT's) tailored for high switching speeds. The free-wheeling diodes

are the new Fast Recovery Epitaxial Diodes (FRED's) to provide matched current capabilities with the IGBT's and are

specified with excellent reverse recovery times at high current ratings. 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 2uS 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 power

supply derived from the +15 volt supply completely eliminates the need for 3 floating independent power supplies for

the high-side drive.

AV+

AØ

AV-

BV+

BØ

BV-

CV+

CØ

CV-/ISENSE

18

17

16

15

14

13

12

11

10

1

2

3

4

5

6

7

8

9

VCC

AØHIN

AØLIN

BØHIN

BØLIN

CØHIN

CØLIN

ITRIP

VSS

TYPICAL APPLICATIONS

ISO-9001 CERTIFIED BY DSCC

3 PHASE SIX STEP DC BRUSHLESS MOTOR DRIVE

OR 3 PHASE SINUSOIDAL INDUCTION MOTOR DRIVE

PIN-OUT INFORMATION

Rev. I 6/04

1