发明名称 |
Switching power supply utilizing oscillator frequency tuner for load driving capability under peak load condition |
摘要 |
A switching power supply including an oscillator frequency tuner to enhance its load driving capability is presented. The oscillator frequency tuner includes a plurality of capacitors connected between a reference voltage output of the switching control circuit and a ground terminal, at least one bypass switch coupled across at least one of the capacitors for controlling the charging and discharging operation of the capacitor coupled therewith, and a bypass switch controller for controlling a switching state of the bypass switch. When the switching power supply is operating under a peak load condition, the bypass switch controller receives a feedback control signal and instructs the bypass switch to bypass current, and thus reducing the equivalent timing capacitance of the switching control circuit for increasing the maximum duty cycle of the switching control circuit.
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申请公布号 |
US7092261(B2) |
申请公布日期 |
2006.08.15 |
申请号 |
US20040850696 |
申请日期 |
2004.05.21 |
申请人 |
DELTA ELECTRONICS (THAILAND) PUBLIC COMPANY, LIMITED |
发明人 |
ALLWYN JACOB D'CUNHA;RUPESH KUMAR TANDON;SUPAPORN ITTASAKUL;TASI KUEI HSIANG |
分类号 |
H02M3/335;H02M3/24 |
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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