ZHCSR16 September 2022 TPS544C26
ADVANCE INFORMATION
| CMD Address | 44h |
| Write Transaction: | Write Byte |
| Read Transaction: | Read Byte |
| Format: | Unsigned Binary (1 byte) |
| NVM Backup: | EEPROM |
| Updates: | On-the-fly |
The VOUT_UV_FAULT_LIMIT command sets the value of the output voltage sensed at the (VOSNS ? GOSNS) pins that causes an output undervoltage fault. The SEL_UVF bits set an undervoltage fault threshold relative to the current VOUT setting that is commanded by either SVID SetVID command or I2C (A6h) VOUT_CMD. The VOUT Tracking UVF function is activated after the soft-start ramp completes.
When the undervoltage fault condition is triggered, the device responds according to (45h) VOUT_UV_FAULT_RESPONSE. Due to the lack of an I2C alert pin, the TPS544C26 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/W | R/W |
| Reserved | SEL_UVF | ||||||
| LEGEND: R/W = Read/Write; R = Read only |
| Bit | Field | Access | Reset | Description |
|---|---|---|---|---|
| 7:2 | Reserved | R | 000000b | Not used and always set to 0. |
| 1:0 | SEL_UVF | R/W | NVM | Sets the undervoltage fault
threshold. 00b: VOUT Tracking UVF threshold = ?150 mV 01b: VOUT Tracking UVF threshold = ?200 mV 10b: VOUT Tracking UVF threshold = ?200 mV 11b: VOUT Tracking UVF threshold = ?300 mV |