Invention Grant
- Patent Title: Switching regulator and electronic device incorporating same
- Patent Title (中): 开关稳压器和并入其的电子器件
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Application No.: US13459329Application Date: 2012-04-30
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Publication No.: US08829878B2Publication Date: 2014-09-09
- Inventor: Ippei Noda
- Applicant: Ippei Noda
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Cooper & Dunham LLP
- Priority: JP2011-119419 20110527
- Main IPC: G05F1/00
- IPC: G05F1/00 ; H02M3/158

Abstract:
A switching regulator includes a first switching element connected between an input terminal and an output terminal; a second switching element connected between the output terminal and a ground; a switching-time control circuit to generate a first switching-time control signal indicating finish timing of an ON-period of the first switching element, based on a ratio of a length of the ON-period of the first switching element to a sum of lengths of ON-periods of the first and second switching elements; a comparator generate a second switching-time control signal indicating finish timing of the ON-period of the second switching element when a feedback voltage is smaller than a reference voltage; and a switching-element control circuit to control switching of the first and second switching elements so that the first and second switching elements are turned on complementarily based on the first and second switching-time control signals.
Public/Granted literature
- US20120299562A1 SWITCHING REGULATOR AND ELECTRONIC DEVICE INCORPORATING SAME Public/Granted day:2012-11-29
Information query
IPC分类: