ZHCSQY3 march 2023 TPS546D24S
PRODUCTION DATA
| CMD Address | 55h |
| Write Transaction: | Write Word |
| Read Transaction: | Read Word |
| Format: | SLINEAR11 per CAPABILITY |
| Phased: | No |
| NVM Back-up: | EEPROM |
| Updates: | On-the-fly |
The (55h) VIN_OV_FAULT_LIMIT command sets the PVIN voltage, in volts, when a VIN_OV_FAULT is declared. The response to a detected VIN_OV_FAULT is determined by the settings of (56h) VIN_OV_FAULT_RESPONSE. (55h) VIN_OV_FAULT_LIMIT is typically used to stop switching in the event of excessive input voltage, which can result in over-stress damage to the power FETs due to ringing on the SW node.
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 |
| RW | RW | RW | RW | RW | RW | RW | RW |
| VINOVF_EXP | VINOVF_MAN | ||||||
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| RW | RW | RW | RW | RW | RW | RW | RW |
| VINOVF_MAN | |||||||
| LEGEND: R/W = Read/Write; R = Read only |
| Bit | Field | Access | Reset | Description |
|---|---|---|---|---|
| 15:11 | VINOVF_ EXP | RW | 11110b | Linear format two’s complement exponent |
| 10:0 | VINOVF_ MAN | RW | NVM | Linear format two’s complement mantissa |
Attempts to write (55h) VIN_OV_FAULT_LIMIT beyond the supported range will be considered invalid/unsupported data and cause the TPS546D24S to respond by flagging the appropriate status bits and notifying the host according to the PMBus 1.3.1 Part II specification section 10.9.3. (55h) VIN_OV_FAULT_LIMIT supports values from 4 V to 20 V in 0.25-V steps. Following a Power Cycle or STORE/RESTORE, (55h) VIN_OV_FAULT_LIMIT will be restored to the nearest supported value.