UCD3138128 datasheet(47/80 Pages) TI

47 / 80 page

Multi Mode Closed Loop

Start of Period

Filter controlled edge

Period

Period Counter

DPWM Output A

Event 1

Filter Duty (High Resolution)

Cycle Adjust A (High Resolution)

Adaptive Sample Trigger A

Adaptive Sample Trigger B

Sample Trigger 1

Blanking A Begin

Blanking A End

Event 3 (High Resolution)

Filter Duty (High Resolution)

Cycle Adjust B (High Resolution)

Sample Trigger 2

Blanking B Begin

Blanking B End

Phase Trigger

To Other

Modules

To Other

Modules

Events which change with DPWM mode:

DPWM A Rising Edge = Event 1

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

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

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

DPWM Output B

UCD3138128, UCD3138A64

www.ti.com

SLUSBZ8A – JUNE 2014 – REVISED SEPTEMBER 2014

Device Functional Modes (continued)

9.4.1.3 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 31.

Figure 31. DPWM Multi-Mode Close Loop

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UCD3138128 Datasheet(PDF) 47 Page - Texas Instruments

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