ZHCSIO9A August 2018 – June 2021 TPSM831D31
PRODUCTION DATA
The VOUT_OV_FAULT_LIMIT is used to read back the value of the output voltage measured at the sense or output pins that causes an output overvoltage fault in VID format. VOUT_OV_FAULT_LIMIT is a VID format command, and must be accessed through Read Word/Write Word transactions. VOUT_OV_FAULT_LIMIT is a paged register. In order to access VOUT_OV_FAULT_LIMIT for channel A, PAGE must be set to 00h. In order to access the VOUT_OV_FAULT_LIMIT 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.
| 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 |
| R | R | R | R | R | R | R | R |
| VO_OVF_VID | |||||||
| LEGEND: R/W = Read/Write; R = Read only |
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 7:0 | VO_OVF_VID | R | See below. | Read-only overvoltage fault limit, in VID format. |
When the 5-mV DAC mode VID table is selected via MFR_SPECIFIC_13, the device sets VOUT_OV_FAULT_LIMIT register to FFh. When the 10-mV DAC mode VID table is enabled, the device determines VOUT_OV_FAULT_LIMIT according to the value of VOUT_MAX, and applies a fixed offset value.