发明名称 |
Switched-mode power supply having a circuit arrangement for turning the switching device when a voltage on the switching device is at a minimum |
摘要 |
A circuit arrangement for use in a controller circuit of a switched mode power supply for turning on a power device in the switched-mode power supply when a voltage across the power device is at a minimum. The circuit arrangement includes circuitry for detecting when a change in the voltage across the power device is substantially zero, and for detecting when the voltage across the power device is less than a predetermined level. When these two criteria are met, the circuit arrangement generates a turn-on signal for the power device.
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申请公布号 |
US5986897(A) |
申请公布日期 |
1999.11.16 |
申请号 |
US19980107188 |
申请日期 |
1998.06.29 |
申请人 |
PHILIPS ELECTRONICS NORTH AMERICA CORPORATION |
发明人 |
MAJID, NAVID;GRADZKI, PAWEL M. |
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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