| 摘要 |
The present invention relates to a power supply for LED lighting. The power supply for the LED lighting includes: a converter part including a switching part for switching input voltage to a transformer; an LED module driven through the output across both terminals of the transformer; a voltage detection part for sensing and supplying an input voltage; a frequency control part for generating a control signal having a preset dynamic frequency by the sensing voltage supplied from the voltage detection part; and a comparison part for receiving a current feedback signal and the control signal from the LED module to apply first and second driving signals to the switching part. The switching part controls a duty cycle according to the first and second driving signals so that predetermined current flows through the LED module. |
