POWER SUPPLY FOR PROLONGING HOLD-UP TIME

  • US 20140254201A1
  • Filed: 03/07/2013
  • Published: 09/11/2014
  • Est. Priority Date: 03/07/2013
  • Status: Abandoned Application
First Claim
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1. A power supply for prolonging a hold-up time, comprising:

  • a main power supply system, comprising;

    a rectification unit, for receiving and rectifying an external power source to output a first power;

    a power factor correction unit, for receiving the first power and modulating a phase of the first power to generate a second power;

    a voltage stabilization element, for receiving and stabilizing the second power; and

    a power modulation unit, connected to the voltage stabilization element, for converting the second power to output an operating power;

    wherein, the power factor correction unit has an input end connected to the rectification unit and an output end connected to the voltage stabilization element; and

    a hold-up power supply system, connected in parallel to the power factor correction unit, comprising;

    an isolation transformer element, connected to the input end, for transforming the first power to a third power;

    a power storage element, for receiving the third power and storing as a hold-up power; and

    a power comparison unit, disposed between the output end and the power storage element to receive the second power and the hold-up power respectively;

    the power comparison unit comprising a first status for rendering the power storage element to be continuously charged when the second power is greater than the hold-up power, a second status for rendering the power storage element to be no longer charged when the second power is equal to the hold-up power, and a third status for prompting the power storage element to output the hold-up power to the power modulation unit to continue converting the operating power for a hold-up time when the second power is smaller than the hold-up power.

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