A stall protection circuit is provided for bidirectional motor operation
that is controlled by a half bridge switch that has forward, reverse and
off positions. A method of protecting a motor is also disclosed. A Hall
effect current sensor may be provided in a stall current protection
circuit that engages a latching circuit. The latching circuit is
operative to interrupt current flowing to the motor by disabling MOSFETs
on opposite sides of the motor. Alternatively, FET voltage from drain to
source may be used to measure the current supplied to the motor that is
used to engage the latching circuit.