Power Supply Circuit

摘要

There is a problem in the prior semiconductor devices that energy recovery efficiency is low. According to one embodiment of the present invention, a power supply circuit includes an alternating-current signal synthesis unit including a plurality of alternating-current coupling elements having primary sides to which respective input alternating-current signals are input and secondary sides connected in series with each other, and a control circuit that outputs an input selection signal specifying a combination of the input alternating-current signals to be synthesized. The control circuit generates the input selection signal so as to maximize the output alternating-current signal synthesized by the alternating-current synthesis signal unit.

主权项

1. A power supply circuit comprising:
an alternating-current signal synthesis unit that synthesizes a plurality of input alternating-current signals to output the synthesized signal as an output alternating-current signal; an AC/DC conversion circuit that converts the output alternating-current signal into a direct-current voltage signal; and a control circuit that generates an input selection signal, the input selection signal specifying a combination of the input alternating-current signals to be synthesized so that the output alternating-current signal or the direct-current voltage signal is maximized, wherein the alternating-current signal synthesis unit synthesizes the input alternating-current signals to be synthesized specified by the input selection signal to output the output alternating-current signal.