LED Multi-Channel Current Balancing Module and LED Driving Circuit Using Same

摘要

The present invention solves the problem of current leaking due to the current unbalance of the LED channel by connecting the current balanced bridge module to the rear end of the inverter in parallel, thereby eliminating the LED driver stage constituted by one per one LED channel, Channel current balancing module capable of controlling the LED current of all channels through LED current control and controlling the LED current of n + 1 channels by using an n-channel module, and to provide an LED driving circuit using the same A transformer having first and second coils connected to a rear end of the inverter configured by a half bridge or a full bridge for converting DC power as an output of the PFC into AC power and at least two or more diodes connected in parallel, A rectifying section connected to the secondary side of the rectifying section and rectifying the voltage generated by the transforming section and delivering the rectified voltage to the load; DC power supplied from the inverter to the condenser C_R) And the coil L_m, L_RThe filter unit is connected between the transforming unit and the rectifying unit and generates a current flowing in the left and right direction by using a charge balance law when a voltage is applied. Capacitor_b).