发明名称 |
LED driver with dynamic power management |
摘要 |
A light emitting diode (LED) system implements a LED driver to drive a set of one or more LED strings. The LED driver includes a voltage source to provide an adjustable output voltage to a head end of each LED string of the set for a first duration and a second duration following the first duration. The LED driver further includes a feedback controller to control the voltage source to adjust the output voltage for the second duration based on a digital code value generated from a minimum tail voltage of one or more tail voltages of the set at a sample point of the first duration. The LED driver further includes a power controller to temporarily enable one or more components of the feedback controller for a sample period of the first duration, the sample period comprising the sample point. |
申请公布号 |
US8106604(B2) |
申请公布日期 |
2012.01.31 |
申请号 |
US20090504335 |
申请日期 |
2009.07.16 |
申请人 |
ZHAO BIN;CORNISH JACK W.;HORNG BRIAN B.;KAMEYA ANDREW M.;KWOK KENNETH C.;LEE VICTOR K.;FREESCALE SEMICONDUCTOR, INC. |
发明人 |
ZHAO BIN;CORNISH JACK W.;HORNG BRIAN B.;KAMEYA ANDREW M.;KWOK KENNETH C.;LEE VICTOR K. |
分类号 |
H05B37/02 |
主分类号 |
H05B37/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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