Invention Grant
- Patent Title: Switching power supply circuit and control method therefor
- Patent Title (中): 开关电源电路及其控制方法
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Application No.: US13583991Application Date: 2011-03-09
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Publication No.: US09276466B2Publication Date: 2016-03-01
- Inventor: Koichi Mizutani , Kouichi Yamanoue
- Applicant: Koichi Mizutani , Kouichi Yamanoue
- Applicant Address: JP Aichi-ken US MI
- Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA,VISTEON GLOBAL TECHNOLOGIES, INC
- Current Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA,VISTEON GLOBAL TECHNOLOGIES, INC
- Current Assignee Address: JP Aichi-ken US MI
- Agency: Sughrue Mion, PLLC
- Priority: JP2010-054902 20100311
- International Application: PCT/IB2011/000508 WO 20110309
- International Announcement: WO2011/110933 WO 20110915
- Main IPC: G05F1/00
- IPC: G05F1/00 ; H02M3/156
Abstract:
A switching power supply circuit includes a PWM drive circuit (12) that performs the PWM driving of a switching element (Q1) at a duty ratio (D) commensurate with an input target voltage (VS), and generates from an input voltage (VB) an output voltage (VTL) whose target value is the target voltage (VS), by the PWM drive circuit (12) driving the switching element (Q1). The switching power supply circuit further includes a control circuit (13) and a target voltage limiting circuit (14) that together fix the duty ratio (D) regardless of the target voltage (VS), when a difference between the input voltage (VB) and the target voltage (VS) is less than or equal to a predetermined constant value (α).
Public/Granted literature
- US20130049717A1 SWITCHING POWER SUPPLY CIRCUIT AND CONTROL METHOD THEREFOR Public/Granted day:2013-02-28
Information query
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