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Power supply device, method for controlling the power supply device, and electronic apparatus

  • US 9,450,418 B2
  • Filed: 12/03/2012
  • Issued: 09/20/2016
  • Est. Priority Date: 12/09/2011
  • Status: Active Grant
First Claim
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1. A power supply device, comprising:

  • a first power supplying part which produces a first voltage;

    a second power supplying part which produces a second voltage, the second power supplying part having an output current capacity smaller than the first power supplying part;

    a comparator for comparing a magnitude of the first voltage and a magnitude of the second voltage with each other; and

    voltage control signal generation means for generating a voltage control signal on the basis of the comparison, whereinthe second power supplying part controls a voltage value of the second voltage so as to bring the voltage value of the second voltage closer to a voltage value of the first voltage in response to the voltage control signal.

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