Invention Grant
- Patent Title: Power circuit including step-up circuit and stabilizing method thereof
- Patent Title (中): 电源电路包括升压电路及其稳定方法
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Application No.: US12608417Application Date: 2009-10-29
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Publication No.: US08169253B2Publication Date: 2012-05-01
- Inventor: Akira Umezawa , Masaaki Kuwagata , Yasuhiko Honda , Gyosho Chin
- Applicant: Akira Umezawa , Masaaki Kuwagata , Yasuhiko Honda , Gyosho Chin
- Applicant Address: JP Tokyo
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2008-281524 20081031
- Main IPC: H03K3/01
- IPC: H03K3/01
Abstract:
A power circuit includes a reference potential circuit, a step-up circuit, and a conversion circuit. The reference potential circuit generates a reference potential. The step-up circuit generates a desired internal potential by stepping up a power supply potential. The step-up circuit includes a comparison circuit, a differential amplifier circuit, and a switch element. The comparison circuit outputs the result of comparison between a potential and the reference potential. The differential amplifier circuit is turned on or off by the operation control signal. The switch element performs on/off control according to the operation control signal and resets the output potential of the differential amplifier circuit. The conversion circuit converts the of the operation control signal so as to make longer the on period of the differential amplifier circuit and the off period of switch element.
Public/Granted literature
- US20100109627A1 POWER CIRCUIT INCLUDING STEP-UP CIRCUIT AND STABILIZING METHOD THEREOF Public/Granted day:2010-05-06
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