Invention Grant
- Patent Title: Off time control method for switching regulator
- Patent Title (中): 关断时间控制方法
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Application No.: US12687035Application Date: 2010-01-13
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Publication No.: US08971061B2Publication Date: 2015-03-03
- Inventor: En Li , Yang Shi , Huanyu Lu , Junming Zhang , Yuancheng Ren
- Applicant: En Li , Yang Shi , Huanyu Lu , Junming Zhang , Yuancheng Ren
- Applicant Address: US CA San Jose
- Assignee: Monolithic Power Systems, Inc.
- Current Assignee: Monolithic Power Systems, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Perkins Coie LLP
- Priority: CN200910058121 20090113
- Main IPC: H02M3/335
- IPC: H02M3/335
Abstract:
The present invention provides an off time control method and switching regulator using it. The current flowing through a switch is compared with a current threshold, and the switch is turned off if the current flowing through the switch is larger than the current threshold. The off time of the switch is determined by the load. The current threshold is variable at light load to prevent generating the audible noise and improve the whole efficiency.
Public/Granted literature
- US20100201335A1 OFF TIME CONTROL METHOD FOR SWITCHING REGULATOR Public/Granted day:2010-08-12
Information query
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