Invention Grant
- Patent Title: Power source circuit and method of controlling power source circuit
- Patent Title (中): 电源电路及控制电源电路的方法
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Application No.: US14833198Application Date: 2015-08-24
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Publication No.: US09407146B2Publication Date: 2016-08-02
- Inventor: Takashi Taya
- Applicant: LAPIS SEMICONDUCTOR CO., LTD.
- Applicant Address: JP Kanagawa
- Assignee: LAPIS SEMICONDUCTOR CO., LTD.
- Current Assignee: LAPIS SEMICONDUCTOR CO., LTD.
- Current Assignee Address: JP Kanagawa
- Agency: Kubotera & Associates, LLC
- Priority: JP2014-174540 20140828
- Main IPC: G05F1/563
- IPC: G05F1/563 ; H02M3/158 ; G05F5/00 ; H02J7/00 ; H02M1/00
Abstract:
A power source circuit includes a power source terminal for inputting a power source voltage; a switching regulator including a switching circuit connected to the power source terminal and a smoothing circuit connected to the switching circuit; a series regulator connected to the switching regulator in series; a switching portion; and a control portion. The smoothing circuit includes a capacitor and an inductor to output a first voltage. The series regulator is connected to the switching circuit and the smoothing circuit in series to output a second voltage. The switching portion supplies the power source voltage to the series regulator. The control portion outputs a switching signal for controlling the switching portion to turn on or off according to the power source voltage.
Public/Granted literature
- US20160065050A1 POWER SOURCE CIRCUIT AND METHOD OF CONTROLLING POWER SOURCE CIRCUIT Public/Granted day:2016-03-03
Information query
IPC分类:
