Patent ID: 9490623
Filing Date: 2016-11-08
CPC Classification: H02H

Claim Text:
1. An overcurrent detection circuit for one or more capacitive loads, the circuit comprising: a comparator adapted to receive a sensed current signal and coupled to receive a setpoint signal, the sensed current signal representative of current being supplied to the one or more capacitive loads, the setpoint signal representative of an overcurrent setpoint, the comparator configured to supply an overcurrent trip signal when the current supplied to the one or more capacitive loads is greater than or equal to the overcurrent setpoint; a differentiator adapted to sense a voltage rate of change across the one or more capacitive loads and configured to supply a differentiator output signal representative thereof; and a summer coupled to receive a fixed reference setpoint signal and the differentiator output signal and configured, upon receipt thereof, to add the fixed reference setpoint signal and the differentiator output signal to thereby generate the setpoint signal and supply the setpoint signal to the comparator.