A method for controlling multiple power supplies includes coupling inputs of the plurality of power supplies to a common input voltage bus, coupling outputs of the plurality of power supplies to respective loads, and during a startup process, controlling t...

This invention relates to a method for driving converts of an uninterrupted power supply (UPS), characterized in that the generating circuit of driving signal for power factor correction generates two driving signals (DRV1, DRV2) to drive the switch transi...

This invention relates to a PFC circuit for an uninterrupted power supply. Such a PFC circuit includes a first converter, a second converter, an energy storing branch composed of two capacitors in series, and a controller. Each of the first and the second ...