发明名称 LED array control circuit with voltage adjustment function and driver circuit and method for the same
摘要 The present invention discloses an LED array control circuit with voltage adjustment function and a driver circuit and a method for the same. The LED array includes multiple LED strings each of which has multiple LED devices connected in series. The LED array control circuit includes: a power supply circuit for providing a supply voltage to the LED array; and an LED driver circuit for controlling current through each LED string, the LED driver circuit including: multiple current sources corresponding to the multiple LED strings respectively, each current source having a first end which is coupled to a corresponding LED string, and a second end; and a voltage adjustment circuit for adjusting a voltage of the second end of a corresponding current source according to a signal indicating a voltage drop across the corresponding LED string.
申请公布号 US2011204797(A1) 申请公布日期 2011.08.25
申请号 US20100800845 申请日期 2010.05.24
申请人 RICHTEK TECHNOLOGY CORPORATION 发明人 LIN SHUI-MU;LIU TI-TI
分类号 H05B37/02 主分类号 H05B37/02
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