Invention Grant
US08947060B2 Regulator over-voltage protection circuit with reduced standby current
有权
稳压器过电压保护电路具有降低的待机电流
- Patent Title: Regulator over-voltage protection circuit with reduced standby current
- Patent Title (中): 稳压器过电压保护电路具有降低的待机电流
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Application No.: US12953392Application Date: 2010-11-23
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Publication No.: US08947060B2Publication Date: 2015-02-03
- Inventor: Da Song Lin , Ni Zeng , Gang Zha , Xianfeng Xiong , Yiwei Zhang
- Applicant: Da Song Lin , Ni Zeng , Gang Zha , Xianfeng Xiong , Yiwei Zhang
- Applicant Address: CN Shenzhen
- Assignee: STMicroelectronics (Shenzhen) R&D Co., Ltd.
- Current Assignee: STMicroelectronics (Shenzhen) R&D Co., Ltd.
- Current Assignee Address: CN Shenzhen
- Agency: Slater & Matsil, L.L.P.
- Priority: CN200910265273 20091228
- Main IPC: G05F1/00
- IPC: G05F1/00 ; H02M1/32 ; H02M3/00

Abstract:
An embodiment of the invention relates to a power converter formed with an error amplifier and a related method. In an embodiment, a first switch is coupled in series with an error amplifier compensation capacitor. Upon detection of a current level greater than a threshold level, the compensation capacitor is decoupled from the error amplifier by opening the first switch. In an embodiment, a second switch is coupled in parallel with the compensation capacitor, and the current-sensing circuit enables conductivity of the second switch to discharge the compensation capacitor upon detection of the current level greater than the threshold level. The second switch is opened upon detection of the current level less than the threshold level. In an embodiment, the current-sensing circuit controls an output current of the power converter at a current-limit level upon detection of the internal current level greater than the threshold level.
Public/Granted literature
- US20110156688A1 Regulator Over-Voltage Protection Circuit with Reduced Standby Current Public/Granted day:2011-06-30
Information query
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