FEATURES:

75V, 10 Amp Capability

Ultra Low Thermal Resistance - Junction to Case - 1.5°C/W (Each MOSFET)

Self-Contained, Smart Lowside/Highside Drive Circuitry

Bootstrap High-Side Supplies

Under-Voltage Lockout

Capable of Switching Frequencies to 25KHz

Isolated Case Allows Direct Heat Sinking

Bolt-down Design Allows Superior Heat Dissipation

Contact MSK for MIL-PRF-38534 Qualification Status

DESCRIPTION:

The MSK 4303 is a 10 Amp, 3 Phase Bridge Smart Power Motor Drive Hybrid with a 75 volt rating on the output

switches. The output switches are MOSFETs. This new smart power motor drive hybrid is 5.0 volt input logic

compatible. Under-voltage 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 bootstrap power supply derived from the +VB supply

completely eliminates the need for 3 floating independent power supplies.

4707 Dey Road Liverpool, N.Y. 13088

(315) 701-6751

TYPICAL APPLICATIONSPIN-OUT INFORMATION

TYPICAL APPLICATIONS

PIN-OUT INFORMATION

3 PHASE SIX STEP DC BRUSHLESS MOTOR DRIVE

OR 3 PHASE SINUSOIDAL INDUCTION MOTOR DRIVE

EQUIVALENT SCHEMATIC

M.S. KENNEDY CORP.

1

2

3

4

5

6

7

8

9

10

H INA

L INA

+VCC

H INB

L INB

COM

COM

+VB

H INC

L INC

20

19

18

17

16

15

14

13

12

11

V+

N/C

AV-

AØ

N/C

BV-

BØ

N/C

CV-

CØ

1

M.S.KENNEDY CORP.

4303

10 AMP, 75 VOLT MOSFET

SMART POWER 3-PHASE

MOTOR DRIVE HYBRID

MIL-PRF-38534 AND 38535 CERTIFIED FACILITY

8548-109 Rev. E 11/13