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Selective enablement of power supply sections for improving efficiency

  • US 8,391,036 B2
  • Filed: 12/29/2009
  • Issued: 03/05/2013
  • Est. Priority Date: 12/29/2009
  • Status: Active Grant
First Claim
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1. A power supply system for powering a load, comprising:

  • a first stage including at least one alternating current (AC) to direct current (DC) conversion section configured for converting AC from an AC input to DC at an upper DC voltage value;

    a second stage in electronic communication with the first stage, the second stage including at least one DC to DC regulation section, wherein each DC to DC regulation section is configured for regulating at least a portion of the DC at the upper DC voltage value to DC at a lower DC voltage value and supplying the lower DC voltage value to a DC output;

    wherein the first stage includes more than one AC to DC conversion section or the second stage includes more than one DC to DC regulation section; and

    a controller for selectively enabling a selected combination of the at least one AC to DC conversion section and the at least one DC to DC regulation section according to a value of the load.

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