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LED DRIVER WITH ADAPTIVE DYNAMIC HEADROOM VOLTAGE CONTROL
LED DRIVER WITH ADAPTIVE DYNAMIC HEADROOM VOLTAGE CONTROL
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机译:具有自适应动态顶部电压控制的LED驱动器
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摘要
A multi-channel LED driver includes a plurality of linear current regulators, each connected to a bottom of a string of series connected LEDs of a multi-channel LED that controls a bias current and the string of series connected LEDs responsive to an LED bias reference voltage. A dynamic headroom regulation voltage control circuit monitors the headroom regulation voltage at the bottom of each string of the series connected LEDs in the multi-channel LED and generates a reference voltage controlling each of the headroom regulation voltages responsive to the LED bias reference voltage.
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