Patent ID: 9318945
Filing Date: 2016-04-19
CPC Classification: H02M,Y02B

Claim Text:
1. A resonant-mode power supply, comprising an assembly of switches connected in a bridge or a haft-bridge configuration, a series resonant circuit connected in the bridge or half bridge diagonal, a part of which is formed by a multi-winding inductor by means of which a load is connected, and a controller configured to stabilize output voltages or currents by changing a switching frequency of the assembly of switches, wherein the series resonant circuit comprises an energy recirculation circuit comprising an inductor for limiting a resonant circuit quality factor, connected through a diode rectifier to a supply voltage node and in parallel to a resonant capacitance or to a resonant inductance and a current monitoring circuit configured to monitor a current in the energy recirculation circuit and, by means of the controller, to change the switching frequency of the assembly of switches in order to reduce power supplied to the series resonant circuit upon exceeding a threshold value by the current in the energy recirculation circuit.