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Application Note 011
MSK4364 Evaluation Board User's Guide
By Bob Abel & Dan Williams, MS Kennedy Corp.; Revised 9/19/2013
Introduction
The MSK 4364 is a complete 3 Phase MOSFET Bridge Brushless 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, hall sensing circuitry, commutation 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 4364 has good thermal conductivity of the MOSFET's due to
isolated substrate/package design that allows direct heat sinking of the hybrid without
insulators.
This configuration can be used to control a variety of loads, such as a brushed DC motor or
a voice coil. Because of the internal PWM generator, all the user needs to do is provide an
analog voltage representative of the PWM duty cycle desired on the output.
The evaluation board provides a platform from which to evaluate new designs with ample
real estate to make changes and evaluate results. Evaluation early in the design phase
reduces the likelihood of excess ripple, instability, or other issues, from becoming a problem
at the application PCB level.
This application note is intended to be used in conjunction with the MSK4364 data
sheet. Reference the device data sheet for additional application information and
specifications.
4707 DEY ROAD LIVERPOOL, NY 13088
PHONE: (315) 701-6751 | FAX: (315) 701-6752
M.S. KENNEDY CORPORATION
MSK Web Site:
http://www.mskennedy.com/
