12-Channels Pre-programmable Constant Current LED Driver

Version:A.006

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DM621

Average Separated PWM (AS-PWM) Waveform

The DM621 incorporates a new PWM method, hence the IOUT waveform demonstrates

a very different characteristic compared to conventional PWM method. The IOUT

waveform is averagely divided into 16 sections in a whole PWM period at each PWM mode.

Furthermore, this progressive algorithm could efficiently reduce flickers and enhance the

visual refresh rate.

Figure 7. The Progressive PWM Method (1)

Figure 8. The Progressive PWM Method (2)