发明名称 |
Switching power supply unit |
摘要 |
<p>A switching power supply unit of the present invention a timing generating circuit (121) which receives a first control signal formed by a rectifier-transistor driving circuit (104), forms a second control signal based on the first control signal, and supplies the second control signal to a control electrode of the rectifier transistor (113). <??>The first control signal is synchronized with the switching operation of a half-bridge circuit (102), and the second control signal exceeds a threshold voltage of a rectifier transistor (113) at a timing substantially equal to the timing that one edge of the first control signal is generated and falls below the threshold voltage of the rectifier transistor (113) at a timing earlier by predetermined time than the timing that the other edge of the first control signal is generated. <IMAGE></p> |
申请公布号 |
EP1261122(A2) |
申请公布日期 |
2002.11.27 |
申请号 |
EP20020011479 |
申请日期 |
2002.05.24 |
申请人 |
TDK CORPORATION |
发明人 |
TAKAGI, MASAKAZU;YAMAMOTO, JUNICHI;SHIMIZU, KATSUHIKO;ZAITSU, TOSHIYUKI |
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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