发明名称 |
Drive circuit for synchronous rectifiers in isolated forward converter |
摘要 |
A forward converter circuit that includes synchronous rectifiers as the forward and freewheeling rectifying elements in the output stage. The forward converter also includes a drive circuit for the synchronous rectifiers. The drive circuit includes an auxiliary secondary winding on the power transformer which is used to generate the gate control signal for the forward synchronous rectifier and an auxiliary winding on the output inductor which is used to generate the gate control signal for the freewheeling synchronous rectifier. An auxiliary switch is used to turn off the freewheeling rectifier, with the switch operating in response to the gate drive signal for the power switch.
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申请公布号 |
US6061255(A) |
申请公布日期 |
2000.05.09 |
申请号 |
US19990326493 |
申请日期 |
1999.06.04 |
申请人 |
ASTEC INTERNATIONAL LIMITED |
发明人 |
CHIK, WONG SIU;CHUEN, WONG MAN |
分类号 |
H02M3/335;(IPC1-7):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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