SFFS093A November 2021 – March 2022 BQ77216
PRODUCTION DATA
This section provides a Failure Mode Analysis (FMA) for the pins of the BQ77216. The failure modes covered in this document include the typical pin-by-pin failure scenarios:
Table 4-2 through Table 4-5 also indicate how these pin conditions can affect the device as per the failure effects classification in Table 4-1.
| Class | Failure Effects |
|---|---|
| A | Potential device damage that affects functionality |
| B | No device damage, but loss of functionality |
| C | No device damage, but performance degradation |
| D | No device damage, no impact to functionality or performance |
Figure 4-1 shows the BQ77216 pin diagram. For a detailed description of the device pins please refer to the Pin Configuration and Functions section in the BQ77216 data sheet.
Figure 4-1 Pin Diagram| Pin Name | Pin No. | Description of Potential Failure Effect(s) | Failure Effect Class |
|---|---|---|---|
| NC | 1 | Function as normal | D |
| VDD | 2 | No power to part | B |
| V16 | 3 | Automatic OW detection. | D |
| V15 | 4 | Automatic OV detection. | D |
| V14 | 5 | Automatic OV detection. | D |
| V13 | 6 | Automatic OV detection. | D |
| V12 | 7 | Automatic OV detection. | D |
| V11 | 8 | Automatic OV detection. | D |
| V10 | 9 | Automatic OV detection. | D |
| V9 | 10 | Automatic OV detection. | D |
| V8 | 11 | Automatic OV detection. | D |
| V7 | 12 | Automatic OV detection. | D |
| V6 | 13 | Automatic OV detection. | D |
| V5 | 14 | Automatic OV detection. | D |
| NC | 15 | Function as normal | D |
| NC | 16 | Function as normal | D |
| V4 | 17 | Automatic OV detection. | D |
| V3 | 18 | Automatic OV detection. | D |
| V2 | 19 | Automatic OV detection. | D |
| V1 | 20 | Automatic OV detection. | D |
| VSS | 21 | Function as normal | D |
| COUT | 22 | No output signal to system | B |
| DOUT | 23 | No output signal to system | B |
| TS | 24 | Automatic OT detection. | D |
| Pin Name | Pin No. | Description of Potential Failure Effect(s) | Failure Effect Class |
|---|---|---|---|
| NC | 1 | Function as normal | D |
| VDD | 2 | No power to part | B |
| V16 | 3 | Automatic OW detection. | D |
| V15 | 4 | Automatic OW detection. | D |
| V14 | 5 | Automatic OW detection. | D |
| V13 | 6 | Automatic OV detection. | D |
| V12 | 7 | Automatic OW detection. | D |
| V11 | 8 | Automatic OW detection. | D |
| V10 | 9 | Automatic OW detection. | D |
| V9 | 10 | Automatic OW detection. | D |
| V8 | 11 | Automatic OW detection. | D |
| V7 | 12 | Automatic OW detection. | D |
| V6 | 13 | Automatic OW detection. | D |
| V5 | 14 | Automatic OW detection. | D |
| NC | 15 | Function as normal | D |
| NC | 16 | Function as normal | D |
| V4 | 17 | Automatic OW detection. | D |
| V3 | 18 | Automatic OW detection. | D |
| V2 | 19 | Automatic OW detection. | D |
| V1 | 20 | Automatic OW detection. | D |
| VSS | 21 | Automatic OW detection. | D |
| COUT | 22 | No output signal to system | B |
| DOUT | 23 | No output signal to system | B |
| TS | 24 | No OT detection. | B |
| Pin Name | Pin No. | Shorted to | Description of Potential Failure Effect(s) | Failure Effect Class |
|---|---|---|---|---|
| NC | 1 | TS | Function as normal | D |
| VDD | 2 | NC | Function as normal | D |
| V16 | 3 | VDD | Function as normal | D |
| V15 | 4 | V16 | Automatic OV detection. | D |
| V14 | 5 | V15 | Automatic OV detection. | D |
| V13 | 6 | V14 | Automatic OV detection. | D |
| V12 | 7 | V13 | Automatic OV detection. | D |
| V11 | 8 | V12 | Automatic OV detection. | D |
| V10 | 9 | V11 | Automatic OV detection. | D |
| V9 | 10 | V10 | Automatic OV detection. | D |
| V8 | 11 | V9 | Automatic OV detection. | D |
| V7 | 12 | V8 | Automatic OV detection. | D |
| V6 | 13 | V7 | Automatic OV detection. | D |
| V5 | 14 | V6 | Automatic OV detection. | D |
| NC | 15 | V5 | Function as normal | D |
| NC | 16 | NC | Function as normal | D |
| V4 | 17 | NC | Function as normal | D |
| V3 | 18 | V4 | Automatic OV detection | D |
| V2 | 19 | V3 | Automatic OV detection. | D |
| V1 | 20 | V2 | Automatic OV detection. | D |
| VSS | 21 | V1 | Automatic OV detection. | D |
| COUT | 22 | VSS | No output signal to system | B |
| DOUT | 23 | COUT | No output signal to system | B |
| TS | 24 | DOUT | Automatic OT detection. | D |
| Pin Name | Pin No. | Description of Potential Failure Effect(s) | Failure Effect Class |
|---|---|---|---|
| NC | 1 | Function as normal | D |
| VDD | 2 | Function as normal | D |
| V16 | 3 | Function as normal | C |
| V15 | 4 | Automatic OV detection. | D |
| V14 | 5 | Automatic OV detection. | D |
| V13 | 6 | Automatic OV detection. | D |
| V12 | 7 | Automatic OV detection. | D |
| V11 | 8 | Automatic OV detection. | D |
| V10 | 9 | Automatic OV detection. | D |
| V9 | 10 | Automatic OV detection. | D |
| V8 | 11 | Automatic OV detection. | D |
| V7 | 12 | Automatic OV detection. | D |
| V6 | 13 | Automatic OV detection. | D |
| V5 | 14 | Automatic OV detection. | D |
| NC | 15 | Function as normal | D |
| NC | 16 | Function as normal | D |
| V4 | 17 | Automatic OV detection. | D |
| V3 | 18 | Automatic OV detection. | D |
| V2 | 19 | Automatic OV detection. | D |
| V1 | 20 | Automatic OV detection. | D |
| VSS | 21 | Automatic OW detection. | D |
| COUT | 22 | No output signal to system | B |
| DOUT | 23 | No output signal to system | B |
| TS | 24 | No OT detection. | A |