ZHCSG68F MARCH 2017 – JANUARY 2019 TPSM846C23
PRODUCTION DATA.
The VOUT_TRANSITION_RATE command sets the rate of change in mV/µs of any output voltage change during normal operation (also includes output voltage changes in TOFF_DELAY state. In contrast, the soft-start transition rate is controlled by TON_RISE and the TOFF_FALL transition rate is controlled by TOFF_FALL command).
For PWM loop slave device, this command cannot be accessed. Any writes to this command will be ignored. An attempt to read or write this command will result in a NACK’d command, the reporting of an IVC fault, and triggering of SMB_ALERT.
Only 8 fixed output voltage transition rates are available in the device. As such, the range of programmed VOUT-transition rates are sub-divided into 8 buckets that then selects one of the 8 fixed VOUT-transition rates. Programmed values are rounded to the nearest bucket/transition rate as outlined below:
| COMMAND | VOUT_TRANSITION_RATE | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Format | Linear, two’s complement binary | |||||||||||||||
| Bit Position | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| Access | r | r | r | r | r | r | r | r | r | r/w | r/w | r/w | r/w | r/w | r/w | r/w |
| Function | Exponent | Mantissa | ||||||||||||||
| Default Value | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 0 |