发明名称 |
Holdover circuit for a power converter using a bi-directional switching regulator |
摘要 |
A holdover circuit is configured with a holdover capacitor, preferably an aluminum electrolytic capacitor, to provide uninterruptible operation for an electrical load operable over a limited range of input voltage during brief power interruptions. The holdover circuit includes a switching regulator configured with two active switches that are controlled with complementary duty cycles to charge and discharge the holdover capacitor at a voltage higher than the voltage of the load. The controller for the switching regulator may be configured to regulate the voltage of the holdover capacitor at a voltage proportional to the load voltage or at a constant voltage. The controller for the switching regulator is configured to operate in different modes during normal powered operation and during holdover.
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申请公布号 |
US7646186(B2) |
申请公布日期 |
2010.01.12 |
申请号 |
US20050141512 |
申请日期 |
2005.05.31 |
申请人 |
TEXAS INSTRUMENTS INCORPORATED |
发明人 |
JUNG EDWARD;ALOISI PAUL DAVID;BIRD JAMES G. |
分类号 |
G05F1/70;G05F3/00;G05F5/00;H02J7/34;H02M3/158;H02M3/335 |
主分类号 |
G05F1/70 |
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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