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LED DRIVER WITH PRECHARGE AND TRACK/HOLD

  • US 20100134040A1
  • Filed: 12/03/2008
  • Published: 06/03/2010
  • Est. Priority Date: 12/03/2008
  • Status: Active Grant
First Claim
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1. A method comprising:

  • controlling, at a light emitting diode (LED) driver, an output voltage provided to a head end of each of a plurality of LED strings based on relationship between at least one tail voltage of the plurality of LED strings and a reference voltage;

    receiving, at the LED driver, a pulse width modulation (PWM) data to control activation of a plurality of LED strings; and

    adjusting the reference voltage based on the PWM data.

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