发明名称 |
Power supply apparatus |
摘要 |
The present invention provides a power supply apparatus which can suppress a raising and hunting of output (DC voltage) to a load which is light. The power supply apparatus comprises an AC-to-DC converter for supplying a load with a DC voltage, and a switching operation controller for correcting a power factor and controlling a switching element so that an output or a DC voltage of the AC-to-DC converter becomes a predetermined target value. The switching operation controller has a low-pass filter for smoothening the DC voltage with a variable cut off frequency. By varying the cut-off frequency of the low-pass filter, it is possible to recognize a rising of the DC voltage to suppress and stabilize a boost and hunting of the DC voltage in a light load state.
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申请公布号 |
US6215287(B1) |
申请公布日期 |
2001.04.10 |
申请号 |
US20000571893 |
申请日期 |
2000.05.16 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
MATSUSHIRO HIDEO;OGAWA MASANORI |
分类号 |
H02M7/12;H02M1/42;H02M3/155;(IPC1-7):G05F1/00;G05F1/40 |
主分类号 |
H02M7/12 |
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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