LED driver system with energy storage function
An LED driver and energy storage technology, applied in energy-saving control technology, lighting devices, light sources, etc., can solve the problems of inability to perform indoor lighting, LEDs cannot operate normally, and low power factor.
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[0069] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0070] The schematic diagram of the AC-DC conversion part of the energy storage LED driver system is as follows: figure 2 shown. It mainly includes off-chip main topology module and on-chip control module. The working principle of the main topology module is as follows: Diodes D1, D2, D3, and D4 form a full-bridge rectifier circuit to convert high-voltage AC input into high-voltage DC input. After the high-voltage DC input voltage is filtered by the capacitor C1, the high-frequency components are filtered out, and then added to the main coil on the source side. When the power switch tube P1 is turned on, current flows through the main coil on the source side, and the current of the main coil on the source side is sampled into the CS pin of the on-chip control circuit through the sampling network R11 and R12, and no current flows th...
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