发明名称 |
System and method for managing negative voltage in a power supply overvoltage failure event |
摘要 |
A synchronous Buck voltage regulator accepts an input voltage to provide a regulated output voltage to an information handling system processing component, such as a CPU. Input voltage is regulated by a control MOSFET, a synchronous MOSFET and a regulator controller that controls the output by controlling the control and synchronous MOSFETs. The synchronous MOSFET handles overvoltage events output from the control MOSFET by interfacing an inductor-capacitor tank circuit to reduce the overvoltage. A negative voltage protection MOSFET driver associated with the regulator controller monitors for negative voltage events that result from the interfacing of the inductor-capacitor tank circuit and selectively decouples the inductor-capacitor tank circuit if the negative voltage event is associated with a predetermined condition. The negative voltage protection MOSFET driver maintains the interface of the inductor-capacitor tank circuit if the overvoltage event is associated with a failed control MOSFET.
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申请公布号 |
US2006238181(A1) |
申请公布日期 |
2006.10.26 |
申请号 |
US20050112250 |
申请日期 |
2005.04.22 |
申请人 |
LUO SHIGUO;BRUKWICZ LESZEK;WOOD MERLE;ZHU GUANGYONG |
发明人 |
LUO SHIGUO;BRUKWICZ LESZEK;WOOD MERLE;ZHU GUANGYONG |
分类号 |
G05F1/00 |
主分类号 |
G05F1/00 |
代理机构 |
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地址 |
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