Invention Grant
US07928713B2 Method and apparatus for synchronous buck with active negative current modulation
有权
具有有源负电流调制的同步降压的方法和装置
- Patent Title: Method and apparatus for synchronous buck with active negative current modulation
- Patent Title (中): 具有有源负电流调制的同步降压的方法和装置
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Application No.: US12057747Application Date: 2008-03-28
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Publication No.: US07928713B2Publication Date: 2011-04-19
- Inventor: James H. Nguyen
- Applicant: James H. Nguyen
- 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
- Main IPC: G05F1/40
- IPC: G05F1/40
Abstract:
A circuit is disclosed that includes a buck voltage regulator electrically coupled to an active current modulator. The active current modulator is operable to detect a negative current in the low-side switch of the buck voltage regulator circuit during a light mode operation. Whenever the negative current is detected, the active negative current modulator causes the low-side switch to stay ON in a linear mode and limits the negative current to a predetermined current level.
Public/Granted literature
- US20090243569A1 METHOD AND APPARATUS FOR SYNCHRONOUS BUCK WITH ACTIVE NEGATIVE CURRENT MODULATION Public/Granted day:2009-10-01
Information query
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