Hi,
I understand you want to disable the ePWM after a trip event. The Trip Zone settings of the ePWM block can be configured to set the PWM output to the desired value when triggered by a Trip Zone event. These settings can be adjusted in the ‘Trip Zone unit’ tab under ‘Block Parameters’ of the ePWM block.
Additionally, you can refer to the example ‘Power Factor Correction Using Boost Converter,’ which uses custom code to generate a Trip Zone event for ePWM:
- In this example, custom code is used to generate a turn-off condition for the ePWM block. The One-Shot Trip (OST) event is triggered from the software by setting the OST bit of the TZFRC (Trip Zone Force Register) corresponding to ePWM4.
- The custom code utilizes the ‘System Outputs’ block, which is located under ‘c28069pfchvkit’ -> ‘PFC Control’ -> ‘Scaling’ -> ‘OverVoltage Protection’ -> ‘OverVoltage Protection’.
- The ‘Trip Zone unit’ of the ‘ePWM4’ block is configured to set the output PWM to ‘Low’ when the corresponding One-Shot event is triggered. The ‘ePWM4’ block can be found under ‘c28069pfchvkit’ -> ‘PFC Control’ -> ‘PWM Driver’ -> ‘Codegen’ -> ‘ePWM4A’.
I hope this helps you resolve the issue.
Regards,
Shivam.
