Thus, a low-voltage sinusoidal waveform generator must be connected to PIN 3, so the sinusoidal PWM modulation is obtained (Figure 10). Figure 10 This is the block diagram of the modulator that ...

Figure 1 Analog PWM circuit using triangle wave generator and comparator In this Design Idea ... Figure 3 Layout plot of the PWM block. In the actual chip, the block is covered with metal layers for ...