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REDUCED SLEEP CURRENT IN POWER CONVERTERS

  • US 20160111950A1
  • Filed: 10/20/2014
  • Published: 04/21/2016
  • Est. Priority Date: 10/20/2014
  • Status: Active Grant
First Claim
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1. A method in a power supply circuit comprising:

  • operating the power supply circuit to convert an input voltage at a first voltage level to an output voltage at a second voltage level;

    (i) activating a sleep cycle in the power supply circuit by disabling operation of the power supply for a duration of time;

    (ii) at expiration of the duration of time, restoring the output voltage to the second voltage level by enabling operation of the power supply, but only when a difference between the output voltage and a reference voltage exceeds a predetermined voltage level;

    (iii) selectively altering the duration of time during which the power supply is disabled by increasing or decreasing the duration of time; and

    repeating (i) through (iii).

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