Logic circuit, sequence circuit, power supply control circuit, switching power supply device

Abstract

A sequence circuit () includes a detector () that detects an occurrence of an event based on an input signal, an acceptor () that accepts the event whose occurrence has been detected by the detector, an inhibitor () that inhibits the acceptor from accepting another event for a first period using the acceptance of one event by the acceptor as a trigger, a clock pulse generator () that generates one or more clock pulses during a period after a second period shorter than the first period elapses from the start of the first period until the first period ends, a determiner () that determines a next state based on a current slate and the event accepted by the acceptor, and a latch () that latches the next state using the clock pulse. An output of the latch is the current state.