Invention Grant
- Patent Title: Switching regulator and electronic device therewith
- Patent Title (中): 开关稳压器和电子设备
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Application No.: US11910474Application Date: 2006-04-18
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Publication No.: US07750617B2Publication Date: 2010-07-06
- Inventor: Masaki Omi
- Applicant: Masaki Omi
- Applicant Address: JP Kyoto
- Assignee: Rohm Co., Ltd.
- Current Assignee: Rohm Co., Ltd.
- Current Assignee Address: JP Kyoto
- Agency: Fish & Richardson P.C.
- Priority: JP2005-127774 20050426
- International Application: PCT/JP2006/308104 WO 20060418
- International Announcement: WO2006/118021 WO 20061109
- Main IPC: G05F1/575
- IPC: G05F1/575

Abstract:
A switching regulator (20) includes a sense resistor (Rs), a sense current generating circuit (213) for generating a sense current (Isense) commensurate with a sense voltage (Vsense), a slope current generating circuit (214) for generating a slope current (Islope) with a ramped or triangular waveform, a slope voltage generating circuit (215) for generating a slope voltage (Vslope) commensurate with a summed current (Isense plus Islope), an error amplifier (ERR) for generating an error voltage (Verr) commensurate with an error of an output, a comparator (CMP) for comparing the error voltage (Verr) with the slope voltage (Vslope) to generate a PWM signal and a switching control section (CTRL) for turning on and off an output transistor (N1) based on the PWM signal.
Public/Granted literature
- US20090268492A1 Switching Regulator and Electronic Device Therewith Public/Granted day:2009-10-29
Information query
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