High performance linear LED driving circuit

A high performance linear driving circuit converting an AC voltage of an external power supply into a DC output current and then outputs the DC current to at least one LED includes a detection unit, a control unit and a current unit. In a 180-degree phase sine wave period of the AC voltage, the tota...

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Bibliographic Details
Main Authors Tu, Shih-Ping, Kuo, Chun-Chieh, Yan, Bo-En, Hsiao, Cheng-Po, Huang, Chung-Hsin
Format Patent
LanguageEnglish
Published 08.05.2018
Subjects
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
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Summary:A high performance linear driving circuit converting an AC voltage of an external power supply into a DC output current and then outputs the DC current to at least one LED includes a detection unit, a control unit and a current unit. In a 180-degree phase sine wave period of the AC voltage, the total current of the output current is formed by a first working section, an energy saving section and a second working section, and the detection unit detects at least a voltage value of the AC voltage or a current value of the output current to generate a detection signal, and drives the control unit to modulate the duty cycle and current value of the first working section, energy saving section and second working section, and the amounts of current of the first and second working sections are greater than that of the energy saving section.
Bibliography:Application Number: US201715412435