4 Pin Failure Mode Analysis (Pin FMA)

This section provides a Failure Mode Analysis (FMA) for the pins of the TPSI2140-Q1. The failure modes covered in this document include the typical pin-by-pin failure scenarios:

• Pin short-circuited to Ground (see Table 4-2)
• Pin open-circuited (see Table 4-3)
• Pin short-circuited to Adjacent Pin (see Table 4-4)

Table 4-2 through Table 4-4 also indicate how these pin conditions can affect the device as per the failure effects classification in Table 4-1. Note that when pin short to ground case is discussed, only primary side ground shorts are considered.

Below is the TPSI2140-Q1 pin diagram package. For a detailed description of the device pins, see the Pin Configuration and Functions section in the TPSI2140-Q1 data sheet.

Figure 4-1 TPSI2140-Q1 Pin Diagram