UCD3138128 datasheet(34/80 Pages) TI

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FAULT - CBC

FAULT - AB

FAULT -A

DCOMP – 4X

EXT GPIO– 4X

ACOMP – 7X

FAULT -B

FAULT MODULE

CYCLE BY CYCLE

AB FLAG

A FLAG

B FLAG

FAULT MUX

ALL_FAULT_EN

DPWM _EN

DPWM

CBC_FAULT_EN

CBC_PWM _AB_EN

FAULT MODULE

ANALOG PCM

Bit 20 in DPWMCTRL0

Bit30 in DPWMFLTCTRL

Bit 31 in DPWMFLTCTRL

Bit 0 in DPWMCTRL0

DISABLE PWM A AND B

DISABLE PWM A ONLY

DISABLE PWM B ONLY

UCD3138128, UCD3138A64

SLUSBZ8A – JUNE 2014 – REVISED SEPTEMBER 2014

www.ti.com

Figure 20. Fault Mux Module

The Fault Mux Module provides a multitude of fault protection functions within the UCD3138x high-speed loop

(Front End Control, Filter, DPWM and Loop Mux modules). The Fault Mux Module allows highly configurable

fault generation based on digital comparators, high-speed analog comparators and external fault pins. Each of

the fault inputs to the DPWM modules can be configured to one or any combination of the fault events provided

in the Fault Mux Module.

Each one of the DPWM engines has four fault modules. The modules are called CBC fault module, AB fault

module, A fault module and B fault module.

The internal circuitry in all the four fault modules is identical, and the difference between the modules is limited to

the way the modules are attached to the DPWMs.

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UCD3138128 Datasheet(PDF) 34 Page - Texas Instruments

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