SMPS Switching Mode Power Supply LED Method and Apparatus for Driving Light Emitting Diode LED Based on Switching Mode Power Supply SMPS

摘要

A kind of method and apparatus are disclosed, are used for based on switch mode power supply (SMPS) driving one light emitting diode (LED). According to an aspect of the present invention, device, for driving a LED base, including a magnitude of current part on SMPS, its input voltage is from an input power source a to input current and provides input current to a LED modules, including one or more LED; One switch sections is used to execute the swap operation magnitude of current part for charging and discharging; One drive control part is used to generate the square-wave signal for swap operation and independently controls a square wave pulse width and a square-wave cycle. Therefore, it can be provided with the excellent device for being input to output variation characteristic of a high power factor and one. ;Copyright KIPO 2017