MIL-PRF-38534 AND 38535 CERTIFIED FACILITY
M.S.KENNEDY CORP.
4707 Dey Road Liverpool, N.Y. 13088
10 AMP, 70V, H-BRIDGE
MOSFET STEPPER
MOTOR DRIVE
4230
(315) 701-6751
FEATURES:
DESCRIPTION:
70V Maximum Operating Motor Supply Voltage
100V Absolute Maximum Output Stage Rating
10Amp Continuous Output Switch Capability
Two Independent H Bridge MOSFET Output Stages Plus Gate Drivers
External High Side Capacitor Connections for Extended High Side Operation
Provisions for Bottom Side Current Sensing
Logic Level Bridge Shutdown
Under-Voltage Lockout will Protect MOSFETs from Insufficient Gate Voltage
Isolated Package Design for High Voltage Isolation Plus Good Thermal Transfer
Contact MSK for MIL-PRF-38534 Qualification Status
The MSK 4230 is a dual, independent MOSFET H Bridge with gate drivers for dual winding stepper motor drive
capability. It is constructed in a convenient isolated hermetic package. The logic input and bridge output have a common
return; the input is not electrically isolated from the output. Provisions for output stage isolation must be made externally.
Each high side drive has the capability of connecting external capacitance for extended high side ON time before refresh is
necessary. A common shutdown pin will disable both bridges upon activation. The bridge is capable of 10Amp continuous
current output with sufficient heat sinking, and is capable of 70V maximum operating supply voltage. The bridge is con-
structed with 100V absolute maximum voltage rated MOSFET to allow for de-rating to 70V. Any PWM scheme can be used
for any type of microstepping for both high torque and/or high speed motor operation. There is no simultaneous conductive
lockout, so provisions must be made externally for dead time. The MSK 4230 has good thermal conductivity for output
stage power dissipation due to the isolated package design that allows direct heat sinking of the device without insulators.
EQUIVALENT SCHEMATIC
1
8548-98 Rev. A 3/13
MSK [ M.S. KENNEDY CORPORATION ]
