发明名称 |
LED DRIVING DEVICE |
摘要 |
An LED driving device has a first constant current source circuit and a voltage control circuit. The first constant current source outputs a first constant current to a first node and the first constant current flows into a first LED module disposed between a driving node and the first node; wherein, the first constant current source circuit has a first detection node for generating a first detection signal in response to the voltage level of the first node. The voltage control circuit is coupled to the first detection node, for outputting a control signal in response to the first detection signal to a voltage regulator circuit in order to control and modulate the voltage regulator circuit to output a driving voltage to the driving node. |
申请公布号 |
US2014232295(A1) |
申请公布日期 |
2014.08.21 |
申请号 |
US201314017868 |
申请日期 |
2013.09.04 |
申请人 |
PRINCETON TECHNOLOGY CORPORATION |
发明人 |
TSAO MING-YUAN;TSAY MEAN-SEA;KUO SHIH-CHOU;CHEN CHIUNG-HUNG |
分类号 |
H05B33/08 |
主分类号 |
H05B33/08 |
代理机构 |
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代理人 |
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主权项 |
1. An LED driving device, comprising:
a first constant current source circuit, outputting a first constant current to a first node such that the first constant current flows into a first LED module disposed between a driving node and the first node, wherein the first constant current source circuit has a first detection node for generating a first detection signal in response to a voltage level of the first node; and a voltage control circuit, coupled to the first detection node for outputting a control signal in response to the first detection signal to a regulator circuit for controlling and adjusting the regulator circuit to output a driving voltage to the driving node. |
地址 |
New Taipei City TW |