发明名称 |
Resonant switching converter having operating modes above and below resonant frequency |
摘要 |
A resonant switching converter comprises a resonant tank having a resonant frequency; a synchronous rectifier coupled to the resonant tank, the synchronous rectifier drawing power from the resonant tank for forming an output voltage; and a controller coupled to the synchronous rectifier for controlling switching of the synchronous rectifier using frequency modulation. The controller operates in a first mode in which the switching of the synchronous rectifier is performed above the resonant frequency of the resonant tank. The first mode employs a duty cycle for the synchronous rectifier. In addition, the controller operates in a second mode in which the switching of the synchronous rectifier is performed below the resonant frequency and the duty cycle of the synchronous rectifier in the second mode is reduced from that of the first mode. |
申请公布号 |
US7660133(B1) |
申请公布日期 |
2010.02.09 |
申请号 |
US20080290853 |
申请日期 |
2008.11.04 |
申请人 |
CHAMPION MICROELECTRONIC CORPORATION |
发明人 |
HWANG JEFFREY;CHEE ALLAND |
分类号 |
H02M3/335 |
主分类号 |
H02M3/335 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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