MSK4201 Datasheet, PDF (3/6 Pages) M.S. Kennedy Corporation – 28 VOLT 5 AMP MOSFET H-BRIDGE PWM MOTOR DRIVER/AMPLIFIER

APPLICATION NOTES
MSK4201 PIN DESCRIPTION
VCC - Is the low voltage supply for powering internal
logic and drivers for the lowside and highside MOSFETS.
The supplies for the highside drivers are derived from
this voltage.
V+ - Is the higher voltage H-bridge supply. The MOSFETS
obtain the drive current from this supply pin. The voltage
on this pin is limited by the drive IC. The MOSFETS are
rated at 100 volts. Proper by-passing to GND with suffi-
cient capacitance to suppress any voltage transients, and
to ensure removing any drooping during switching, should
be done as close to the pins on the hybrid as possible.
MOTOR A - Is the output pin for one half of the bridge.
When the PWM input is high, this output will be pulled
up to V+.
MOTOR B - Is the output pin for the other half of the
bridge. When the PWM input is low, this output will be
pulled up to V+.
RSENSE - This is the common connection for the bot-
tom of the bridge. This can have a sense resistor connec-
tion to the V+ return ground for current limit sensing, or
can be connected directly to ground. The maximum volt-
age on this pin is ±2 volts with respect to GND.
GND - Is the return connection for the input logic and
Vcc.
PWM INPUT - Is a TTL compatible input pin for provid-
ing the PWM signal to modulate the output switches.
The duty cycle can be between 0% (DC Low) and 100%
(DC High). See typical system operation notes.
DISABLE INPUT - Is a TTL compatible input for provid-
ing a shutdown signal to the MCM for disabling all four
switches in the bridge regardless of the PWM input level.
A digital 1 disables, a digital 0 enables.
3
IN
8548-116 Rev. F 3/14