High-efficiency AC-driven LED module

摘要

A high-efficiency Alternating Current (AC)-driven Light-Emitting Diode (LED) module includes a full-wave rectification unit, an LED unit, at least one instantaneous current control unit, and at least one input power compensation unit. The full-wave rectification unit rectifies commercial supply voltage. The LED unit is configured such that LEDS connected in series are arranged separately or in groups. The instantaneous current control unit sequentially controls the sections of the LEDs connected in series. The input power compensation unit actively controls variations in input current and power attributable to variations in input voltage. The full-wave rectification unit, the LED unit, the instantaneous current control unit, and the input power compensation unit are formed of a one-board module (ASIC) or an Integrated Circuit (IC).

主权项

1. A high-efficiency Alternating Current (AC)-driven Light-Emitting Diode (LED) module, comprising:
a full-wave rectification unit configured to rectify commercial supply voltage; an LED unit configured such that LEDS connected in series are arranged separately or in groups; at least one instantaneous current control unit configured to sequentially control sections of the LEDs connected in series; and at least one input power compensation unit configured to actively control variations in input current and power attributable to variations in input voltage; wherein the full-wave rectification unit, the LED unit, the instantaneous current control unit, and the input power compensation unit are formed of a one-board module (ASIC) or an Integrated Circuit (IC); wherein the instantaneous current control unit allows a ground of a second highest instantaneous current control unit to be connected to a shunt resistor of a second lowest instantaneous current control unit, thereby providing sequential sectional control.