SPRUJ79 November 2024 F29H850TU
DE mode is entered when TRIPH_OR_TRIPL signal from the selected comparator (CMPSS) goes high. Once the diode emulation mode is entered, typically TRIPH or TRIPL are set and cleared in a sequence (at a given instance of time, TRIPH is high or TRIPL is high – never both) until the current settles within the threshold band.
Once the DEACTIVE flag is set, the thresholds on CMPSS are changed to an alternate set of thresholds, and also ePWMA/B out of DE function are being controlled by the DEACTCTL register settings. Figure 30-55 demonstrates an example timing diagram illustrating entry into DE mode.