ZHCSGE0B June 2017 – January 2019 TPS53681
PRODUCTION DATA.
The VOUT_MAX command sets an upper limit on the output voltage that the unit may be commanded to, regardless of an other commands or combinations. The intent of this command is to provide a safeguard against a user accidentally setting the output voltage to a possibly destructive level. VOUT_MAX is a VID format command, and must be accessed through Read Word/Write Word transactions. VOUT_MAX is a paged register. In order to access VOUT_MAX for channel A, PAGE must be set to 00h. In order to access the VOUT_COMMAND register for channel B, PAGE must be set to 01h. For simultaneous access of channels A and B, the PAGE command must be set to FFh.
The device detects that an attempt has been made to program the output to a voltage greater than the value set by the VOUT_MAX command. Attempts to program the output voltage greater than VOUT_MAX can include VOUT_COMMAND attempts, and margin events where the VOUT_MARGIN_HIGH/VOUT_MARGIN_LOW values exceed the value of VOUT_MAX. These events will be treated as warning conditions and not as fault conditions. If an attempt is made to program the output voltage higher than the limit set by the VOUT_MAX command, the device will respond as follows:
This register should be programmed by the user depending upon the maximum output voltage the converter can support.
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 |
| R | R | R | R | R | R | R | R |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| RW | RW | RW | RW | RW | RW | RW | RW |
| VOUT_MAX_VID | |||||||
| LEGEND: R/W = Read/Write; R = Read only |
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 7:0 | VOUT_MAX_VID | RW | NVM |
Used to set the maximum VOUT of the device in VID format. |