SWITCHING RECTIFIER CIRCUIT AND BATTERY CHARGER USING SAME

摘要

A switching rectifier circuit according to the present invention includes: a first switch coupled between a first alternating-current voltage and a direct-current voltage; a second switch coupled between a second alternating-current voltage and the direct-current voltage; a third switch coupled between the first alternating-current voltage and a reference voltage; a fourth switch coupled between the second alternating-current voltage and the reference voltage; a first comparator circuit that generates each of a first power-on detection signal and a first power-off detection signal from the first alternating-current voltage and the direct-current voltage; a second comparator circuit that generates each of a second power-on detection signal and a second power-off detection signal from the second alternating-current voltage and the direct-current voltage; and a timing generator that controls the switches to be turned on/off on the basis of outputs of at least the comparator circuits.