UCD3138 datasheet(39/99 Pages) TI2

39 / 99 page

9.5.4.2 Fault Multiplexer

In order to allow a flexible way of mapping several fault triggering sources to all the DPWMs channels, the

UCD3138 provides an extensive array of multiplexers that are united under the name Fault Mux module.

The Fault Mux Module supports the following types of mapping between all the sources of fault and all different

fault response mechanism inside each DPWM module.

• Many fault sources mapped to a single fault response mechanism. For instance an analog comparator in

charge of over voltage protection, a digital comparator in charge of over current protection and an external

digital fault pin can be all mapped to a fault-A signal connected to a single FAULT MODULE and shut down

DPWM1-A.

• A single fault source can be mapped to many fault response mechanisms inside many DPWM modules.

For instance an analog comparator in charge of over current protection can be mapped to DPWM-0 through

DPWM-3 by way of several fault modules.

• Many fault sources can be mapped to many fault modules inside many DPWM modules.

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UCD3138

SLUSAP2J – MARCH 2012 – REVISED NOVEMBER 2021

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UCD3138 数据表(PDF) 39 Page - Texas Instruments