Switching Power-Supply Device

摘要

A switching power-supply device performs a control of an output voltage by switching operation of a switching element and has an integrated circuit including the switching element and a driving circuit for performing on-and-off control of the switching element. The integrated circuit includes an input terminal connected to the switching element, a voltage detection circuit, which detects a voltage of the input terminal, a timing control circuit, which controls a timing of detecting the voltage by the voltage detection circuit, and a control unit, which performs a control according to the voltage detected by the voltage detection circuit.

主权项

1. A switching power-supply device performing a control of an output voltage by switching operation of a switching element, the switching power-supply device having an integrated circuit comprising the switching element and a driving circuit for performing on-and-off control of the switching element,
wherein the integrated circuit comprises: an input terminal connected to the switching element; a voltage detection circuit, which detects a voltage of the input terminal; a timing control circuit, which controls a timing of detecting the voltage by the voltage detection circuit; and a control unit, which performs a control according to the voltage detected by the voltage detection circuit.