Realization circuit and realization method of ultra-wide VF voltage of LED dimming power supply

Realization circuit and realization method of ultra-wide VF voltage of LED dimming power supply

The invention discloses an implementation circuit and implementation method of ultra-wide VF voltage of an LED dimming power supply, and the implementation method of the ultra-wide VF voltage of the LED dimming power supply comprises the steps: S1, obtaining alternating current, inputting the altern...

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Hauptverfasser: YANG QINGFENG, CHEN DONGJIE, FANG JIEMIAO, YANG WU
Format: Patent
Sprache:chi ; eng
Schlagworte:
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
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creator YANG QINGFENG
CHEN DONGJIE
FANG JIEMIAO
YANG WU
description The invention discloses an implementation circuit and implementation method of ultra-wide VF voltage of an LED dimming power supply, and the implementation method of the ultra-wide VF voltage of the LED dimming power supply comprises the steps: S1, obtaining alternating current, inputting the alternating current into an EMC filtering and rectifying circuit, thereby obtaining direct current voltage, and inputting the obtained direct current voltage into an input end of a constant voltage power conversion control circuit; therefore, the constant-voltage power conversion control circuit is started to work, and a PWM switching signal is output to the constant-voltage power conversion circuit, so that the constant-voltage power conversion circuit is driven to output a constant direct-current voltage. According to the implementation circuit and the implementation method of the ultra-wide VF voltage of the LED dimming power supply, the LED driving power supply can output wide voltage while ensuring the constant curr
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subjects ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
title Realization circuit and realization method of ultra-wide VF voltage of LED dimming power supply
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