4707 Dey Road Liverpool, N.Y. 13088

(315) 701-6751

M.S.KENNEDY CORP.

ISO 9001 CERTIFIED BY DSCC

4253

5 AMP, 55V, H-BRIDGE

MOSFET BRUSHED

MOTOR CONTROLLER

FEATURES:

55 Volt Motor Supply Voltage

5 Amp Output Switch Capability

100% Duty Cycle High Side Conduction Capable

Shoot-Through/Cross Conduction Protection

"Real" Four Quadrant Torque Control Capability

Good Accuracy Around the Null Torque Point

MIL-PRF-38534 CERTIFIED

DESCRIPTION:

The MSK 4253 is a complete H-bridge MOSFET Brushed Motor Control System in an electrically isolated hermetic

package. The hybrid is capable of 5 amps of output current and 55 volts of DC bus voltage. It has the normal features for

protecting the bridge. Included is all the bridge drive circuitry, and all the current sensing and analog circuitry necessary for

closed loop current mode (torque) control. When PWM'ing, the transistors are modulated in locked anti-phase mode for the

tightest control and the most bandwidth. Provisions for applying different compensation schemes are included. The MSK

4253 has good thermal conductivity of the MOSFET's due to isolated substrate/package design that allows direct heat

sinking of the hybrid without insulators.

EQUIVALENT SCHEMATIC

TYPICAL APPLICATIONS

Brushed DC Motor Control

Servo Control

Fin Actuator Control

Voice Coil Control

Gimbal Control

AZ-EL Control

1

PRELIMINARY

Rev. - 2/05