1 Overview

This document contains information for the UCC273x1A-Q1 and UCC27302A-Q1 (SOIC and VSON packages) to aid in a functional safety system design. Only the VSON package product supports the EN function. Information provided are:

• Functional safety failure in time (FIT) rates of the semiconductor component estimated by the application of industry reliability standards
• Component failure modes and distribution (FMD) based on the primary function of the device
• Pin failure mode analysis (pin FMA)

Figure 1-1, Figure 1-2, and Figure 1-3 show the device functional block diagrams for reference.

Figure 1-1 Functional Block Diagram of UCC27301A-Q1

Only the VSON package product supports the EN function.

Figure 1-2 Functional Block Diagram of UCC27311A-Q1

Figure 1-3 Functional Block Diagram of UCC27302A-Q1

The UCC273x1A-Q1 and UCC27302A-Q1 were developed using a quality-managed development process, but were not developed in accordance with the IEC 61508 or ISO 26262 standards.