Patent ID: 7016209
Filing Date: 2006-03-21
Classification: H02M

Abstract:
1. A single stage AC/DC converter with piezo transformer suitable for converting an AC power into a DC power, comprising: a rectification module, having a pair of rectification input terminals, a first rectification output terminal and a second rectification output terminal, wherein the pair of rectification input terminals receives the AC power and converts the AC power into a rectification output signal which is then output from the first rectification output terminal; a switching module, comprising: a driving module, electrically coupling to the second bulk output terminal and the half-bridge output terminal of the switching module for blocking a DC bias output from the half-bridge output terminal, and generating a driving signal after the signal obtained from blocking the DC bias is resonated; a piezo transformer, generating a corresponding piezo transforming signal according to the driving signal; and an output rectification module, having a rectification circuit and an output load, wherein the rectification circuit rectifies the piezo transforming signal and outputs the DC power from both sides of the output load.