UCD3138064ARGCR datasheet(52/83 Pages) TI1

52 / 83 page

Start of Period

Period Counter

Start of Period

Period

DPWM Output A

Cycle Adjust A (High Resolution)

Filter Duty (High Resolution)

Event 1

To Other

Modules

Filter controlled edge

Event 3 (High Resolution)

Cycle Adjust B (High Resolution)

Filter Duty (High Resolution)

DPWM Output B

Blanking B Begin

Blanking B End

Phase Trigger

Sample Trigger 2

To Other

Modules

Sample Trigger 1

Blanking A Begin

Blanking A End

DTC Adjustment

Adaptive Sample Trigger B

Adaptive Sample Trigger A

UCD3138064A

SLUSCA5A – DECEMBER 2015 – REVISED AUGUST 2016

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Detailed Description

6.5.1.3

DPWM Multiple Output Mode

Multi mode is used for systems where each phase has only one driver signal. It enables each DPWM

peripheral to drive two phases with the same pulse width, but with a time offset between the phases, and

with different cycle adjusts for each phase.

The Multi-Mode diagram is shown in Figure 6-28.

Events which change with DPWM mode:

DPWM A Rising Edge = Event 1

DPWM A Falling Edge = Event 1 + Filter Duty + Cycle Adjust A + DTC Adjustment

Adaptive Sample Trigger A = Event 1 + Filter Duty + Adaptive Sample Register or

Adaptive Sample Trigger B = Event 1 + Filter Duty/2 + Adaptive Sample Register

DPWM B Rising Edge = Event 3

DPWM B Falling Edge = Event 3 + Filter Duty + Cycle Adjust B + DTC Adjustment

Phase Trigger = Phase Trigger Register value or Filter Duty

Events always set by their registers, regardless of mode:

Sample Trigger 1, Sample Trigger 2, Blanking A Begin, Blanking A End,

Blanking B Begin, Blanking B End

Figure 6-28. DPWM Multi-Mode Closed Loop

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