Texas Instruments Incorporated
CONTROL CIRCUIT WITH OVERCURRENT PREDICTION TO DRIVE CAPACITIVE LOAD

Abstract:

An apparatus includes: an input configured to receive an input voltage; an prediction circuit coupled to the input and configured to provide an overcurrent prediction based on analysis of the input voltage; a delay circuit coupled to the input; a gain control circuit coupled to an output of the delay circuit and configured to selectively adjust a gain applied to at least one frequency range of the input voltage based on the overcurrent prediction; a driver coupled to an output of the gain control circuit; and a capacitive load coupled to an output of the driver.