发明名称 |
BOOTSTRAP CLAMPING CIRCUIT FOR DC/DC REGULATORS AND METHOD THEREOF |
摘要 |
A clamping circuit of a DC/DC regulator includes a reference current generator to generate a reference current. The reference current can be based upon a specified maximum voltage across a bootstrap capacitor of the DC/DC regulator. The clamping circuit also includes a current generator that generates a current based on the voltage across the bootstrap capacitor. The current generated by the current generator is compared to the generated reference current. Based on the comparison, the voltage across the bootstrap capacitor is regulated. By regulating the voltage across the bootstrap capacitor based on current, rather than based directly on the voltage across the capacitor, the design of the clamping circuit is simplified compared to voltage-based implementations.
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申请公布号 |
US2008278135(A1) |
申请公布日期 |
2008.11.13 |
申请号 |
US20070747414 |
申请日期 |
2007.05.11 |
申请人 |
FREESCALE SEMICONDUCTOR, INC. |
发明人 |
DE LIMA FILHO JADER ALVES;SAEZ RICHARD TITOV LARA;PIMENTA WALLACE ALANE |
分类号 |
G05F1/40 |
主分类号 |
G05F1/40 |
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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