The PWM dimming method is one of the commonly used LED switching power supply dimming technologies. This dimming technology is also called pulse width modulation technology, which is a traditional dimming method.

Its working principle is to use simple digital pulses to repeatedly switch the 0-10V dimmable LED driver. The system only needs to provide wide and narrow digital pulses to easily change the output current and adjust the brightness of the LED. The advantage of PWM dimming technology lies in its ability to provide high-quality white light, simple application and high efficiency.

Analog dimming technology is another common LED switching power supply dimming technology. Compared with the more traditional PWM dimming, the analog dimming technology can change the resistance of the current limiting resistor. This method can also change the flow through The current of the white LED changes the brightness of the LED.

The biggest advantage of analog dimming technology is that it avoids the noise caused by dimming. When the analog dimming technology is adopted, the forward voltage drop of the LED will decrease with the decrease of the LED current, so that the energy consumption of the white LED is also reduced.