发明名称 |
SYSTEM AND METHOD FOR PRE-CHARGING A BOOTSTRAP CAPACITOR IN A SWITHING REGULATOR WITH HIGH PRE- BIAS VOLTAGE |
摘要 |
<p>An apparatus comprises a voltage regulator including an high side switching transistor and a low side switching transistor. A high side drive controls operation of the high side switching transistor. A low side driver controls operation of the low side switching transistor. A bootstrap capacitor provides an operating voltage to the high side switching driver. The bootstrap capacitor is charged to a predetermined level responsive to a supply voltage. A low side driver drives the low side switching transistor according to a process that charges the bootstrap capacitor to the predetermined level. The process turns on the low side switching transistor for a first predetermined number of cycles and turns off the low side switching transistor for a second predetermined number of cycles. The process is repeated for a predetermined number of times during startup of the voltage regulator when a prebias load is applied to the voltage regulator.</p> |
申请公布号 |
WO2011011503(A4) |
申请公布日期 |
2011.07.14 |
申请号 |
WO2010US42729 |
申请日期 |
2010.07.21 |
申请人 |
INTERSIL AMERICAS INC.;WANG, JUE |
发明人 |
WANG, JUE |
分类号 |
G05F1/10;G05F3/00 |
主分类号 |
G05F1/10 |
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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