Patent ID: 9450506
Filing Date: 2016-09-20
CPC Classification: H02M

Claim Text:
1. A multi-step ,switched-capacitor rectifier comprising: a bridge stage having an input adapted to be coupled to a first alternating current (AC) source and an output, said bridge stage having a bridge capacitor and at least one bridge switching element coupled between a first terminal of said bridge capacitor and the bridge input and at least one switching element coupled between a second terminal of said bridge capacitor and the bridge input and one or more rectifier stages with a first one of the one or more rectifier stages having an input adapted to be coupled to an output of said bridge stage and at least one of said one or more rectifier stages having a direct current (DC) output adapted to be coupled to a load and each of said one or more rectifier stages having a rectifier capacitor and a plurality of rectifier switching elements with at least one of said rectifier switching elements coupled between a first terminal of said rectifier capacitor and a first input terminal of the rectifier stage, at least one switching element coupled between a second terminal of said rectifier capacitor and the first input terminal of said rectifier stage and at least one switching element coupled between a second terminal of said rectifier capacitor and a second input terminal of the rectifier stage, wherein in response to a positive AC current being provided to the input of said bridge stage, said at least one bridge switching element and said plurality of rectifier switching elements are configured to connect said bridge capacitor and said rectifier capacitor such that positive current charges said bridge capacitor and recharges said rectifier capacitor.