A digital control method for LED driving power supply without electrolytic capacitor
A technology of LED driving and electrolytic capacitors, which is applied in the field of digital control of LED drive power without electrolytic capacitors, can solve problems such as mismatching and large volume of electrolytic capacitors, and achieve suppression of low-frequency ripples, reduction of capacity, and realization of non-electrolytic capacitors Effect
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[0021] The technical solution of the present invention will be specifically described below in conjunction with the accompanying drawings.
[0022] The present invention provides a digital control method for a non-electrolytic capacitor LED drive power supply, providing a non-electrolytic capacitor LED drive power supply, including a rectifier circuit, a PFC circuit, a half-bridge resonant circuit, two LED current sharing circuits, and a control circuit; The half-bridge resonant circuit includes switching tubes S1, S2, inductors L1, L2, capacitors C1, C2 and transformer T1, and the two-way LED current sharing circuit includes current sharing capacitor C3, diodes D1, D2, capacitors C10, C20 and LED load LED1, LED2; the input end of the rectification circuit is connected to the AC power supply, the output end of the rectification circuit is connected to the input end of the PFC circuit, the first output end of the PFC circuit is connected to one end of S1, the second output end o...
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