发明名称 |
SWITCHING POWER SUPPLY APPARATUS |
摘要 |
A digital signal processing circuit which performs average current control is disposed on a secondary side of a transformer of an isolated DC-DC converter, and a switching control signal output from the digital signal processing circuit is transmitted to a switching element included in a power factor correction converter through an isolated drive circuit. The digital signal processing circuit obtains an average value of currents supplied to an inductor in accordance with a voltage output from a bias winding of the inductor or an output from a secondary side of a current transformer which detects a drain current of the switching element. Furthermore, the average value of the currents corresponds to a waveform (full-wave rectification sine wave) of an input voltage Vi.
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申请公布号 |
US2010091523(A1) |
申请公布日期 |
2010.04.15 |
申请号 |
US20090647562 |
申请日期 |
2009.12.28 |
申请人 |
MURATA MANUFACTURING CO., LTD. |
发明人 |
UNO YOSHIYUKI;TOKUGAWA TOMOKUNI;HOSOTANI TATSUYA |
分类号 |
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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