Other Parts Discussed in Thread: DRV8212P
We use pairs of DRV8837 to drive 2-phase piezoelectric motors. They run near resonance, so capacitive and not a simple load. The peak currents can exceed plus and minus 2 amps (2 divisions on scope photo, yellow trace), but the duration is on the order of a microsecond. Is the absolute maximum current 1.8 amps regardless? We don't see any current limiting or thermal shutdown, but we're also near the deglitch time so maybe it doesn't come into play. Are we on the edge of trouble?
We also use the DRV8212P with the higher rating, depending on availability and our application. Are the two chips the same part, but selected for current capability, or completely different?