This module combines multiple delay lines in a single module and a simplified calibration system by using a dedicated calibration delay line. For each ePWM module there is one HR delay line.

The HRPWM module offers PWM resolution (time granularity) that is significantly better than what can be achieved using conventionally derived digital PWM methods. The key points for the HRPWM module are:

• Significantly extends the time resolution capabilities of conventionally derived digital PWM
• This capability can be used in both single edge (duty cycle and phase-shift control) as well as dual edge control for frequency/period modulation.
• Finer time granularity control or edge positioning is controlled through extensions to the Compare A and Phase registers of the ePWM module.
• HRPWM capabilities, when available on a particular device, are offered only on the A signal path of an ePWM module (that is, on the EPWMxA output). EPWMxB output has conventional PWM capabilities.