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Introduction
This chapter includes an overview of the module and information about each of its submodules:
• Time-Base Module
• Counter Compare Module
• Action Qualifier Module
• Dead-Band Generator Module
• PWM Chopper (PC) Module
• Trip Zone Module
• Event Trigger Module
• Digital Compare Module
The ePWM Type 4 is functionally compatible to the Type 2 module (a Type 3 does not exist). Type 4 has
the following enhancements in addition to the Type 2 features:
14.6.4 AQCTLA and AQCTLB Shadow Mode Operations
To enable Action Qualifier mode changes which must occur at the end of a period even when the phase
changes, shadowing of the AQCTLA and AQCTLB registers has been added on ePWMs type 2 and later.
Additionally, shadow to active load on SYNC of these registers is supported as well. Shadowing of this
register is enabled and disabled by the AQCTLR[SHDWAQAMODE] and AQCTLR[SHDWAQBMODE]
bits. These bits enable and disable the AQCTLA shadow register and AQCTLB shadow register,
