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OFFLINE CONTROL CIRCUIT OF LED DRIVER TO CONTROL THE MAXIMUM VOLTAGE AND THE MAXIMUM CURRENT OF LEDS
OFFLINE CONTROL CIRCUIT OF LED DRIVER TO CONTROL THE MAXIMUM VOLTAGE AND THE MAXIMUM CURRENT OF LEDS
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机译:LED驱动器的离线控制电路,用于控制LED的最大电压和最大电流
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摘要
An offline control circuit of LED driver controls the maximum voltage and the maximum current of a plurality of LEDs. A switching circuit generates a plurality of LED currents through a transformer. A voltage-feedback circuit generates a voltage loop signal in response to the voltage across the LEDs. A current-feedback circuit senses a plurality of LED currents for generating a current loop signal in response the maximum current of the LEDs. A buffer circuit generates a feedback signal in accordance with the voltage loop signal and the current loop signal. The feedback signal is coupled to the switching circuit through an optical-coupler for controlling the maximum voltage and the maximum current of the LEDs.
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