SPRUIZ1B July 2023 – August 2024 TMS320F28P650DH , TMS320F28P650DK , TMS320F28P650SH , TMS320F28P650SK , TMS320F28P659DH-Q1 , TMS320F28P659DK-Q1 , TMS320F28P659SH-Q1
To detect extended DE phase, which is beyond the expected duration, a DE mode monitor counter, DEMONCNT, is provided. This 16-bit counter monitors the frequency of diode mode trip events. The counter if enabled, DEMONCTL[ENABLE], increments on a PWMSYNC event, in steps of DEMONSTEP[INCSTEP] when TRIPH_OR_TRIPL is high, and decrements on a PWMSYNC event, in steps of DEMONSTEP[DECSTEP] when TRIPH_OR_TRIPL is low. If counter exceeds DEMONTHRES[THRESHOLD], then a DEMONTRIP pulse is generated and the counter is cleared. The counter value is saturated to 0 during an underflow and 0xffff on an overflow. The counter is cleared when DECTL[ENABLE] is cleared.