SLVSH95 July 2024 TPS546C25
ADVANCE INFORMATION
| CMD Address | 22h |
| Write Transaction: | Write Word |
| Read Transaction: | Read Word |
| Format: | SLINEAR16 per (20h) VOUT_MODE |
| NVM Back-up: | EEPROM |
| Updates: | on-the-fly |
VOUT_TRIM is used to apply a fixed offset voltage to the output voltage command value. Output voltage changes due to VOUT_TRIM occur at the rate specified by (27h) VOUT_TRANSITION_RATE.
Return to Supported PMBus Commands.
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 |
| R | R | R | R | R | R | R | R |
| VOUT_TRIM (High Byte) | |||||||
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| R | R/W | R/W | R/W | R/W | R/W | R/W | R/W |
| VOUT_TRIM (Low Byte) | |||||||
| LEGEND: R/W = Read/Write; R = Read only |
| Bit | Field | Access | Reset | Description |
|---|---|---|---|---|
| 15:7 | VOUT_TRIM_SIG_EXT | R | NVM | The 9 MSBs are read only limiting the range of VOUT_TRIM that can be programmed. Their value is set through sign extension of bit 6. |
| 6:0 | VOUT_ TRIM | RW | NVM | Output voltage offset. SLINEAR16 With the exponent of -9, the values will be limited to +123mV to -125mV. |
The output voltage value (including any offset from VOUT_TRIM, (21h) VOUT_COMMAND, VOUT_MARGIN_HIGH, …) may not exceed the values supported by the DAC hardware.
Programming a VOUT_COMMAND + VOUT_TRIM value greater than the maximum value supported by the DAC hardware but less than (24h) VOUT_MAX will result in the regulated output voltage clamping at the maximum value supported by the DAC hardware and setting the VOUT_MAX_MIN warning bit in STATUS_VOUT.
Attempts to write VOUT_TRIM to any value outside those specified as valid, will be considered invalid/unsupported data and cause the device 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.