ZHCSR16 September 2022 TPS544C26
ADVANCE INFORMATION
| CMD Address | 55h |
| Write Transaction: | Write Byte |
| Read Transaction: | Read Byte |
| Format: | Unsigned Binary (1 byte) |
| NVM Backup: | EEPROM |
| Updates: | On-the-fly |
The 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 latch-off always. (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. Upon triggering the PVIN overvoltage fault, the device sets the PVIN_OVF bit in the (7C) STATUS_INPUT register.
Due to the lack of an I2C alert pin, the device does not have a way to notify the host.
Return to Supported I2C and Default Values.
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| R | R | R | R | R | R | R | R/W |
| PVIN_OVF | |||||||
| LEGEND: R/W = Read/Write; R = Read only |
| Bit | Field | Access | Reset | Description |
|---|---|---|---|---|
| 7:1 | Reserved | R | 0000000b | Not used and always set to 0. |
| 0 | PVIN_OVF | R/W | NVM | This bit selects the PVIN_OVF rising threshold. The falling
threshold is always 13.5 V. 0b: PVIN_OVF rising threshold = 16.5 V 1b: PVIN_OVF rising threshold = 18.5 V |