High-power LED driving circuit and system

The utility model relates to a high-power LED drive circuit and system. The high-power LED drive circuit comprises a power supply, at least one power supply drive circuit and at least one signal conversion circuit. The power supply driving circuit comprises a dimming pin and a VCC pin; the input end of the power supply driving circuit is connected with a power supply, the output end of the power supply driving circuit is connected with an LED, and a dimming pin and a VCC pin of the power supply driving circuit are respectively connected with the signal conversion circuit. According to the utility model, the power supply driving circuit is connected with the signal conversion circuit, and the external driving circuit is arranged, so that a light-emitting main body of the RGB LED daytime running light does not need a resistor, the number of elements of the main body is greatly reduced, and the number of failure points is reduced. 本实用新型涉及一种大功率LED驱动电路及系统，所述一种大功率LED驱动电路包括电源、至少一个电源驱动电路和至少一个信号转换电路；所述电源驱动电路包括调光引脚和VCC