ACE714

High Efficiency Low Noise PFM Step-up DC/DC Converter

VER 1.2

6

ACE714

Figure 2. Dimming Control Using a DV Voltage

3. Using a Filtered PWM Signal

The filtered PWM signal can be considered as an adjustable DC voltage. It can be used to replace the

variable DC voltage source in dimming control. The circuit is shown in Figure 3.

Figure 3. Dimming Control Using a Filtered PWM Signal