4707 Dey Road Liverpool, N.Y. 13088

M.S.KENNEDY CORP.

(315) 701-6751

4351

FEATURES:

500V, 50 Amp Capability at 110°C

Fully Isolated Bridge

Ultra Low Thermal Resistance

Integral Free Wheeling Fast Recovery Epitaxial Diode (FRED)

Self-Contained, Smart Lowside/Highside Drive Circuitry and Isolated Supply

Adjustable Deadtime

Capable of Switching Frequencies to 20KHz

Isolated Case Allows Direct Heat Sinking; On Board Temp Sensor

Case Bolt-down Design Allows Superior Heat Dissipation

MIL-PRF-38534 CERTIFIED

50 AMP, 500 VOLT IGBT PLUS DIODE

FULLY ISOLATED

SMART POWER 3-PHASE MOTOR

DRIVE POWER HYBRID

EQUIVALENT SCHEMATIC

DESCRIPTION:

The MSK 4351 is a 50 Amp, 3 Phase Isolated 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 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. The bridge is optically isolated from the control circuitry. 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 adjustable 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 isolated 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.

1

2

3

4

5

6

7

8

9

10

11

12

+15V

GND

AHI

ALO

BHI

BLO

+15V

GND

CHI

CLO

+15V

GND

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

PRELIMINARY Rev. A 11/01

1

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

RKELVIN+

RKELVIN-

RSENSE-

RSENSE-

RSENSE+

RSENSE+

CV-

CV-

CØ

CØ

CV+

CV+

37

38

39

40

41

42

43

44

45

46

47

48

BV-

BV-

BØ

BØ

BV+

BV+

AV-

AV-

AØ

AØ

AV+

AV+

RESET

R/C

+15V

N/C

OSCOUT

GND

N/C

N/C

N/C

N/C

N/C

TEMP SENSE