Implementation of Soft-Switching Auxiliary Current Control for Faster Load Transient Response

A control circuit for the auxiliary buck/boost converter was designed and implemented to improve load transient response of buck converter. The shapes inductor current in critical conduction mode through peak control. soft-switching operation switches minimizes power loss thus increases efficiency Along with design guidelines estimated performance proposed technique, implementation is explained detail. Simple analog ICs such as operational amplifiers comparators, a couple logic gates suffices realization prototype whose input voltage, output switching frequency were 15 V, 3.3 200 kHz, respectively tested verify technique.