专利名称：Hold-up time enhancement circuit for LLC
resonant converter
发明人：Tai Keung Lee
申请号：US14195506沥沥在目
慢三步舞曲大全
申请日：20140303
公开号：US09143040B2
公开日：
江宁区
20150922
专利内容由知识产权出版社提供
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摘要：An open loop half-bridge LLC power converter includes circuitry to reliably increa hold-up time without sacrificing efficiency. An LLC resonant circuit includes resonant inductance, a primary transformer winding, and resonant capacitance. An
电话呼叫转移auxiliary circuit includes an auxiliary transformer winding, an inductor, and a third switching element coupled in ries. A controller is coupled across a voltage nsor and effective thereby to determine a holdup time condition. In a “normal” operating condition the controller generates switch driver signals to turn OFF the third switching element and disable the auxiliary circuit, and in a hold-up time condition the controller turns ON the third switching element and enables the auxiliary circuit wherein the output voltage is incread via current supplied from the auxiliary winding. In various embodiments the auxiliary winding may be an auxiliary primary or condary, or a condary to an auxiliary primary winding of a cond transformer.
申请人：Tai Keung Lee
地址：Hong Kong HK
国籍：HK
卡洛斯斯利姆代理机构：Harness, Dickey & Pierce, P.L.C.
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