发明名称 |
Förfarande och anordning för styrning av en synkron likriktare i en likspänningsomvandlare |
摘要 |
A MOSFET is used as a synchronous rectifier in a fly-back DC/DC converter and connected in series with a secondary winding of a transformer. The MOSFET is repetitively turned on and off in response to the turning off and on of a primary switch connected in series with a primary winding of the transformer. Circuit elements on the secondary winding side detect voltage transients across the MOSFET caused by reverse currents when it is turned off and shorten at least a next on-period of the MOSFET in response to the detection of such transients. |
申请公布号 |
SE0001055(L) |
申请公布日期 |
2001.09.25 |
申请号 |
SE20000001055 |
申请日期 |
2000.03.24 |
申请人 |
ERICSSON TELEFON AB L M |
发明人 |
ASSOW BENGT |
分类号 |
H02M3/335;H02M7/217;(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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