Direction Change in Full-Bridge Mode

In Full-Bridge mode, changing MODE controls the forward/reverse direction. Direction changes occur on the next rising edge of the modulated input.

A direction change is initiated in software by changing the MODE bits. The sequence is illustrated in Figure 1.

• The associated active output CWGxA and the inactive output CWGxC are switched to drive in the opposite direction.
• The previously modulated output CWGxD is switched to the inactive state, and the previously inactive output CWGxB begins to modulate.
• CWG modulation resumes after the direction-switch dead band has elapsed.