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Power supply that determines energy consumption and outputs a signal indicative of energy consumption

  • US 8,330,434 B2
  • Filed: 09/30/2008
  • Issued: 12/11/2012
  • Est. Priority Date: 07/25/2008
  • Status: Expired due to Fees
First Claim
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1. A power supply, comprising:

  • a rectifier having an AC input and a DC output; and

    a power factor correction (PFC) preregulator, coupled to the rectifier, that increases a power factor of the power supply, wherein the PFC preregulator includes a PFC controller that integrates an input power to determine energy consumption and outputs a signal indicative of the energy consumption, and wherein the PFC controller further determines a power state of the power supply and outputs the signal in response to determining the power supply is in a higher power state and refrains from outputting the signal in response to determining the power supply is in a lower power state having a power consumption intermediate the higher power state and an OFF state.

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