发明名称 |
ACTIVE CLAMP STEP-DOWN CONVERTER WITH POWER SWITCH VOLTAGE CLAMPING FUNCTION |
摘要 |
A circuit for clamping a voltage across a switching element to a value equal to or less than the sum of the input voltage plus the voltage across a clamping capacitor is provided. The circuit achieves voltage clamping in a circuit configuration in which an active clamp circuit includes a switch and a clamping capacitor connected in parallel with a first winding of a coupled winding. The active clamp prevents the occurrence of voltage spikes across a first switching element. The clamping capacitor serves a second function in that it recovers energy stored in the first winding of the coupled winding.
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申请公布号 |
US2002185993(A1) |
申请公布日期 |
2002.12.12 |
申请号 |
US20010876632 |
申请日期 |
2001.06.07 |
申请人 |
PHILIPS ELECTRONICS NORTH AMERICA CORPORATION. |
发明人 |
QIAN JINRONG |
分类号 |
H02M3/158;H03K17/0814;(IPC1-7):G05F1/40 |
主分类号 |
H02M3/158 |
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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