FIXED FREQUENCY DC TO DC CONVERTER CONTROL CIRCUIT WITH IMPROVED LOAD TRANSIENT RESPONSE

摘要

Analog pulse width modulation (PWM) control circuits and techniques are presented for improving output voltage load transient response in controlling DC to DC conversion systems in which a transient detector circuit restarts a PWM carrier ramp waveform to initiate asynchronous injection of a pulse between the regular periodic PWM pulses in a fixed frequency pulse stream to mitigate the effect of output inductor energy depletion on output voltage.