发明名称 LED lighting system with accurate current control
摘要 <p>A light emitting diode (LED) lighting system and method are disclosed, The LED lighting system and method include an LED controller to accurately control a current in an LED system. 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 to 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, The LED system and method further involve components to compare the actual charge amount to a desired charge amount for the active time period and compensate for a difference between the actual charge amount and the desired charge amount during the future active time period.</p>
申请公布号 GB2474994(B) 申请公布日期 2013.01.09
申请号 GB20110002839 申请日期 2009.08.31
申请人 CIRRUS LOGIC, INC. 发明人 JOHN L. MELANSON
分类号 H05B33/08 主分类号 H05B33/08
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