ILLUMINATION DEVICE, LED DRIVER CIRCUIT, BLEEDER CONTROL CIRCUIT AND CONTROL METHOD

An illumination device, an LED driver circuit, a bleeder control circuit and a control method are provided. An AC input voltage is transmitted to a bus line after phase-cut processing. The bleeder control circuit includes a timing module configured to receive a bus voltage and at least one threshold...

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Bibliographic Details
Main Authors LIU, Guoqiang, HE, Wanyue
Format Patent
LanguageEnglish
Published 04.05.2023
Subjects
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
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Summary:An illumination device, an LED driver circuit, a bleeder control circuit and a control method are provided. An AC input voltage is transmitted to a bus line after phase-cut processing. The bleeder control circuit includes a timing module configured to receive a bus voltage and at least one threshold voltage and generate a first time signal; a time processing module configured to receive the first time signal and generate a second time signal based on the first time signal in a previous power frequency half-wave cycle; and a control signal generation module configured to receive the second time signal and generate a first control signal for controlling a bleeder circuit. The beneficial effects of the present disclosure include the bleeder circuit being accurately controlled through the detection of the bus voltage and the implementation of the adaptive control method, thereby improving the operational efficiency and stability of the system.
Bibliography:Application Number: US202217981374