초록 ▼

A power supply apparatus includes an AC input port, an output port, and a bypass circuit that couples the AC input port to the output port. An AC/DC converter circuit, e.g., a rectifier circuit, produces a DC voltage from an AC input voltage at the AC input port. A DC/AC converter circuit, e.g., a c

A power supply apparatus includes an AC input port, an output port, and a bypass circuit that couples the AC input port to the output port. An AC/DC converter circuit, e.g., a rectifier circuit, produces a DC voltage from an AC input voltage at the AC input port. A DC/AC converter circuit, e.g., a current mode controlled inverter, controls current transfer between the output port and the AC/DC converter circuit responsive to a control input such that respective first and second component currents of a current delivered to a load coupled to the output port pass via respective ones of the bypass circuit and the DC/AC converter circuit. The DC/AC converter circuit may be operated such that current passing through the bypass circuit is constrained to be substantially in phase with the AC input voltage. The power supply apparatus may have another mode of operation in which the DC/AC converter circuit exclusively provides power to the output port, and may include an auxiliary DC power supply circuit that provides a DC voltage to the DC/AC converter circuit. Related power supply methods are also discussed.

대표청구항 ▼

[ That which is claimed is:] [1.]1. A power supply apparatus, comprising:an AC input port;an output port;a bypass circuit coupling the AC input port to the output port;an AC/DC converter circuit, coupled to the AC input port, that produces a DC voltage from an AC input voltage at the AC input port;

[ That which is claimed is:] [1.]1. A power supply apparatus, comprising:an AC input port;an output port;a bypass circuit coupling the AC input port to the output port;an AC/DC converter circuit, coupled to the AC input port, that produces a DC voltage from an AC input voltage at the AC input port; anda DC/AC converter circuit, coupled to the AC/DC converter circuit, that controls current transfer between the output port and the AC/DC converter circuit responsive to a control input such that respective first and second component currents of a current delivered to a load coupled to the output port pass via respective ones of the bypass circuit and the DC/AC converter circuit.