ZHCSGO0A June 2017 – February 2024 TPS549B22
PRODUCTION DATA
請(qǐng)參考 PDF 數(shù)據(jù)表獲取器件具體的封裝圖。
The MFR_SPECIFIC_02 register allows the user to read the configuration of various pin-strap features and/or overwrite them. Note that any overwritten values here are only good until the next power-on-reset, when all parameters revert back to their pin-strap configurations.
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| TRK | SEQ | 0 | FORCESKIPSS | SST | HICLOFF | CM | |
| R/W | R/W | R | R/W | R/W | R/W | R/W | |
| LEGEND: R/W = Read/Write; R = Read only; -n = value after reset |
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 7 | TRK | R/W | P | This bit indicates whether the device is using internal or external reference voltage tracking. It will initially be loaded and reflect the value of the pin strap; but, can also be overwritten by PMBus. 1: External tracking. |
| 6 | SEQ | R/W | P | This bit indicates whether the device is using internal or external soft-start ramp. It will initially be loaded and reflect the value of the pin strap; but, can also be overwritten by PMBus. 1: Sequencing |
| 5 | R | 0 | ||
| 4 | FORCESKIPSS | R/W | 1 | This bit (when set) allows the user to force Soft-start to always use SKIP mode; regardless of the CM pin strap. 1: Soft start is forced to operate in SKIP mode, then CM bit controls the mode after soft start. |
| 3:2 | SST | R/W | P | These bits indicate the time the device takes to ramp the output voltage up to regulation (that is, soft-start). The field will initially be loaded and reflect the value of the pin strap; but, can also be overwritten by PMBus. (Refer to Table 7-19) |
| 1 | HICLOFF | R/W | P | This bit indicates the response the device will take upon an output undervoltage fault. There are two fault response options which are enforced by the analog circuits: Hiccup or Latch-off. The bit value will initially be loaded and reflect the value of the pin strap; but, can also be overwritten by PMBus. 1: Latch off after UVP fault. |
| 0 | CM | R/W | P | This bit indicates the conduction mode for the device. The bit value will initially be loaded and reflect the value of the pin strap; but, can also be overwritten by PMBus. 1: FCCM |
| SST[1] | SST[0] | Soft-start time |
|---|---|---|
| 0 | 0 | 1 ms |
| 0 | 1 | 2 ms |
| 1 | 0 | 4 ms |
| 1 | 1 | 8 ms |