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POWER SUPPLY, LIGHT EMISSION CONTROL DEVICE AND DISPLAY DEVICE

  • US 20090160367A1
  • Filed: 02/06/2007
  • Published: 06/25/2009
  • Est. Priority Date: 02/17/2006
  • Status: Active Grant
First Claim
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1. A power supply comprising:

  • a charge pump circuit arranged to periodically turns on and off a plurality of charge-transfer switches according to a clock signal, to thereby charges and discharges a charge storage capacitor and thereby produces a desired output voltage from an input voltage to supply the thus produced output voltage to a load,wherein a frequency of the clock signal is varied according to a current flowing through the load.

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