发明名称 |
Switching power supply circuitry |
摘要 |
An output voltage VC obtained by boosting an input voltage VIN by means of a charge pump control circuit 3 of a charge pump 102 is supplied as a power supply voltage to a control circuit 4 of a step-up converter. It is thus possible to eliminate the need for a conventional self-bias method, eliminate switching from startup oscillation to main oscillation of the conventional self-bias method upon startup, and overcome problems caused by the switching of oscillation states, thereby achieving switching power supply circuitry starting in a reliable and stable manner.
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申请公布号 |
US2007210774(A1) |
申请公布日期 |
2007.09.13 |
申请号 |
US20070705013 |
申请日期 |
2007.02.12 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
KIMURA KAZUHITO;ISHII TAKUYA |
分类号 |
H02M3/18 |
主分类号 |
H02M3/18 |
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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