发明名称 |
High Voltage SEPIC Converter |
摘要 |
A SEPIC converter with over-voltage protection includes a high-side inductor that connects a node Vw to a node Vx. The node Vx is connected, in turn to ground by a power MOSFET. The node Vx is also connected to a node Vy by a first capacitor. The node Vy is connected to ground by a low-side inductor. A rectifier diode further connects the node Vy and a node Vout and an output capacitor is connected between the node Vout and ground. A PWM control circuit is connected to drive the power MOSFET. An over-voltage protection MOSFET connects an input supply to the PWM control circuit and the node Vw. A comparator monitors the voltage of the input supply. If that voltage exceeds a predetermined value Vref the comparator output causes the over-voltage protection MOSFET to disconnect the node Vw and the PWM control circuit from the input supply.
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申请公布号 |
US2009045788(A1) |
申请公布日期 |
2009.02.19 |
申请号 |
US20070933402 |
申请日期 |
2007.10.31 |
申请人 |
ADVANCED ANALOGIC TECHNOLOGIES, INC. |
发明人 |
WILLIAMS RICHARD K.;D'ANGELO KEVIN;COLES CHARLES |
分类号 |
G05F1/44;H02H3/20 |
主分类号 |
G05F1/44 |
代理机构 |
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