Invention Grant
- Patent Title: Switching regulator and control circuit thereof and input voltage detection method therefor
- Patent Title (中): 开关稳压器及其控制电路及其输入电压检测方法
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Application No.: US13200162Application Date: 2011-09-20
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Publication No.: US08508209B2Publication Date: 2013-08-13
- Inventor: Jo-Yu Wang , Wei-Jhih Wen
- Applicant: Jo-Yu Wang , Wei-Jhih Wen
- Applicant Address: TW Chupei, Hsin-Chu
- Assignee: Richtek Technology Corporation, R.O.C.
- Current Assignee: Richtek Technology Corporation, R.O.C.
- Current Assignee Address: TW Chupei, Hsin-Chu
- Agency: Tung & Associates
- Priority: TW100123347A 20110701
- Main IPC: G05F1/00
- IPC: G05F1/00
Abstract:
The present invention discloses a switching regulator including: a power stage having an upper gate device and a lower gate device coupled with each other, for converting an input voltage to an output voltage and generating a phase voltage at a node between the upper gate device and the lower gate device; and a control circuit including: a switch operation circuit controlling the power stage, the switch operation circuit generating a test signal turning on the upper gate device for a period of time and then turning it off; and a comparator for generating a ready signal indicating that the input voltage is ready according to comparison between the phase voltage and a reference voltage after the upper gate device is turned off.
Public/Granted literature
- US20130002226A1 Switching regulator and control circuit thereof and input voltage detection method therefor Public/Granted day:2013-01-03
Information query
IPC分类:
