SLUSAQ4G October 2011 – September 2022 TPS40422
PRODUCTION DATA
PCT_VOUT_FAULT_PG_LIMIT is a paged register. The PCT_VOUT_FAULT_PG_LIMIT command is used to set the PGOOD, VOUT_UNDER_VOLTAGE (UV) and VOUT_OVER_VOLTAGE (OV) limits as a percentage of nominal.
In two-phase mode, the user can write to PAGE 0 (channel 1) only. Any writes to PAGE 1 are not acknowledged.
The PCT_VOUT_FAULT_PG_LIMIT takes a one byte data word formatted as shown below:
| COMMAND | PCT_VOUT_FAULT_PG_LIMIT | |||||||
|---|---|---|---|---|---|---|---|---|
| Format | Unsigned binary | |||||||
| Bit Position | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| Access | r | r | r | r | r | r | r/w | r/w |
| Function | X | X | X | X | X | X | PCT_MSB | PCT_LSB |
| Default Value | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The PGOOD, VOUT_UNDER_VOLTAGE (UV) and VOUT_OVER_VOLTAGE (OV) settings are shown in Table 8-7, as a percentage of nominal reference voltage on the FBx pins.
| PCT_MSB | PCT_LSB | UV | PGL LOW | PGL HIGH | PGH HIGH | PGH LOW | OV |
|---|---|---|---|---|---|---|---|
| 0 | 0 | -16.67% | -12.5% | -8.33% | 12.50% | 8.33% | 16.67% |
| 0 | 1 | -12.50% | -8.33% | -4.17% | 8.33% | 4.17% | 12.50% |
| 1 | 0 | -29.17% | -20.83% | -16.67% | 8.33% | 4.17% | 12.50% |
| 1 | 1 | -41.67% | -37.50% | -33.33% | 8.33% | 4.17% | 12.50% |