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ePWM Submodules
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SPRUI07–March 2020
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Enhanced Pulse Width Modulator (ePWM) Module
Table 3-2. Submodule Configuration Parameters (continued)
Submodule Configuration Parameter or Option
Trip-zone (TZ)
• Configure the ePWM module to react to one, all, or none of the trip-zone pins .
• Specify the tripping action taken when a fault occurs:
– Force EPWMxA and/or EPWMxB high
– Force EPWMxA and/or EPWMxB low
– Force EPWMxA and/or EPWMxB to a high-impedance state
– Configure EPWMxA and/or EPWMxB to ignore any trip condition.
• Configure how often the ePWM will react to each trip-zone pins :
– One-shot
– Cycle-by-cycle
• Enable the trip-zone to initiate an interrupt.
• Bypass the trip-zone module entirely.
Event-trigger (ET)
• Enable the ePWM events that will trigger an interrupt.
• Enable ePWM events that will trigger an ADC start-of-conversion event.
• Specify the rate at which events cause triggers (every occurrence or every second or third
occurrence)
• Poll, set, or clear event flags
Code examples are provided in the remainder of this document that show how to implement various
ePWM module configurations. These examples use the constant definitions which can be found in
C2000Ware.
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