Complementary Waveform Generator

The Complementary Waveform Generator (CWG) produces a complementary waveform with the dead-band delay from a selection of input sources.

The CWG module has the following features:

• Selectable dead-band clock source control
• Selectable input sources
• Output enable control
• Output polarity control
• Dead-band control with independent 6-bit rising and falling edge dead-band counters
• Auto-shutdown control with:
  • Selectable shutdown sources
  • Auto-restart enable
  • Auto-shutdown pin override control

The CWG generates a two output complementary waveform from one of several selectable input sources. The off-to-on transition of each output can be delayed from the on-to-off transition of the other output, thereby creating a time delay immediately where neither output is driven. This is referred to as dead-time or dead-band and is covered in the section below titled "Dead-band Control."

It may be necessary to guard against the possibility of circuit faults. In this case, the active drive may be terminated before the fault condition causes damage. This is referred to as auto-shutdown and is covered in the section below titled "Auto-shutdown Control."

The CWG requires five sections to be set up:

• Input
• Clock
• Dead-band
• Shutdown
• Output Control