Understanding Mixed Decay and the Allegro A3977 PFD Percent Fast Decay Feature
Posted: April 16th, 2009 | Author: Tom Scarince | Filed under: Stepper Motors | Tags: A3977 | No Comments »This article explains why you might want to use mixed decay and how it is implemented in the A3977’s current chopper PWM scheme with the percent fast decay (PFD) pin.