ZHCSQY3 march 2023 TPS546D24S
PRODUCTION DATA
| CMD Address | 41h |
| Write Transaction: | Write Byte |
| Read Transaction: | Read Byte |
| Format: | Unsigned Binary (1 byte) |
| Phased: | No |
| NVM Back-up: | EEPROM |
| Updates: | On-the-fly |
The VOUT_OV_FAULT_RESPONSE instructs the device on what action to take in response to an output overvoltage fault. Upon triggering the overvoltage fault, the controller TPS546D24S responds according to the data byte below, and the following actions are taken:
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| RW | RW | RW | RW | RW | RW | RW | RW |
| VO_OV_RESP | VO_OV_RETRY | VO_ OV_ DELAY | |||||
| LEGEND: R/W = Read/Write; R = Read only |
| Bit | Field | Access | Reset | Description |
|---|---|---|---|---|
| 7:6 | VO_OV_RESP | RW | NVM | Output overvoltage response 00b: Ignore. Continue operating without interruption. 01b: Shutdown. Shutdown and retry according to VO_OV_RETRY. 10b: Shutdown. Shutdown and retry according to VO_ OV_ RETRY. 11b: Invalid/Unsupported |
| 5:3 | VO_OV_RETRY | RW | NVM | 0d: Do not attempt to restart (latch off). 1d-6d: After shutting down, wait one HICCUP period, and attempt to restart up to 1 - 6 times. After 1 - 6 failed restart attempts, do not attempt to restart (latch off). 7d: After shutting down, wait one HICCUP period, and attempt to restart indefinitely, until commanded OFF, or a successful start-up occurs. |
| 2:0 | VO_OV_DELAY | RW | NVM | 0d: VO_OV HICCUP period is equal to TON_RISE. 1d - 7d: VO_OV HICCUP period is equal to 1 - 7 times TON_RISE. |
Attempts to write VOUT_OV_FAULT_RESPONSE to any value outside those specified as valid, will be considered invalid/unsupported data and cause the TPS546D24S 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.
A Restart Attempt is successful and the restart limit counter is reset to 0 when no fault with a shut-down response is observed after one (61h) TON_RISE time after completing (61h) TON_RISE or after (62h) TON_MAX_FAULT_LIMIT if (62h) TON_MAX_FAULT_LIMIT is not set to 0 ms (Disabled).