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LED Lighting System with Accurate Current Control

  • US 20100156319A1
  • Filed: 12/19/2008
  • Published: 06/24/2010
  • Est. Priority Date: 08/29/2008
  • Status: Active Grant
First Claim
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1. A light emitting diode (LED) lighting system comprising:

  • an LED controller to control a current in an LED system, wherein the LED controller includes components to;

    calculate, based on the current and an active time period of an LED current time period, an actual charge amount delivered to the LED system wherein the LED current time period is duty cycle modulated at a rate of greater than fifty (50) Hz; and

    utilize the actual charge amount to modify and provide a desired target charge amount to be delivered during a future active time period of the LED current time period.

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