Invention Grant
- Patent Title: Electronic device, detection circuit and voltage control method
- Patent Title (中): 电子设备，检测电路和电压控制方法
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Application No.: US12412704Application Date: 2009-03-27
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Publication No.: US08035367B2Publication Date: 2011-10-11
- Inventor: Mayo Kitano , Masatoshi Kokubun , Takashi Matsumoto
- Applicant: Mayo Kitano , Masatoshi Kokubun , Takashi Matsumoto
- Applicant Address: JP Yokohama
- Assignee: Fujitsu Semiconductor Limited
- Current Assignee: Fujitsu Semiconductor Limited
- Current Assignee Address: JP Yokohama
- Agency: Arent Fox LLP
- Priority: JP2008-091405 20080331; JP2009-026519 20090206
- Main IPC: G05F1/563
- IPC: G05F1/563 ; H02M3/335
Abstract:
A voltage control method includes producing an error signal based on a difference between a reference signal and an adaptor voltage and an adaptor current corresponding to the adaptor voltage, regulating, based on the error signal, the adaptor voltage, comparing a reference voltage to a voltage proportional to a potential corresponding to an identifying voltage corresponding to the adaptor voltage, detecting, based on the comparison result, whether or not a couplable external power source is suitable, and setting based, on the detection result, a potential corresponding to the identifying voltage.
Public/Granted literature
- US20090243576A1 ELECTRONIC DEVICE, DETECTION CIRCUIT AND VOLTAGE CONTROL METHOD Public/Granted day:2009-10-01
Information query
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