Circuit for suppression of leading edge spike switched current

摘要

A switching mode converter with current mode regulation includes a passive network operative to waveshape a ramp signal in order to attenuate the leading edge spike of the sensed switch current. A passive pulse generating network generates a pulse in response to the generated ramp with the proper timing and polarity such that when superimposed on the sensed current waveform effectively cancels the leading edge spike of that waveform.