ZHCSGE0B June 2017 – January 2019 TPS53681
PRODUCTION DATA.
The MFR_SPECIFIC_12 command is used to configure input current sensing.
The MFR_SPECIFIC_12 command must be accessed through Write Word/Read Word transactions. MFR_SPECIFIC_12 is a paged register, but all relevant configuration bits are associated with PAGE 0. PAGE should be set to 00h when accessing MFR_SPECIFIC_12.
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 |
| RW | RW | R | RW | RW | RW | RW | RW |
| IIN_RGAIN | 0 | TI_INTERNAL | |||||
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| RW | RW | RW | RW | RW | RW | RW | RW |
| TI_INTERNAL | |||||||
| LEGEND: R/W = Read/Write; R = Read only |
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15:14 | IIN_RGAIN (PAGE 0 only) | RW | NVM | Input shunt resistance value. Combined with IIN_RGAIN, IIN_OFS, IIN_MAX to calibrate measured input current sensing. Note that finer adjustments can be made using IIN_MAX. |
| 12:0 | TI_INTERNAL | RW | NVM | TI Internal bits. These bits are writeable, but should not be modified from their factory default setting. |
| IIN_GAIN_CTRL
(MFR_SPECIFIC_10) |
IIN_RGAIN
(MFR_SPECIFIC_12) |
Effective AIIN |
|---|---|---|
| 0b | 00b | 0.15 mΩ |
| 0b | 01b | 0.25 mΩ |
| 0b | 10b | 0.3 mΩ |
| 0b | 11b | 0.5 mΩ |
| 1b | 00b | 1.2 mΩ |
| 1b | 01b | 2.0 mΩ |
| 1b | 10b | 2.4 mΩ |
| 1b | 11b | 4.0 mΩ |
| TMAX (binary) | Maximum Temperature (°C) |
|---|---|
| 000b | 90 |
| 001b | 95 |
| 010b | 100 |
| 011b | 105 |
| 100b | 110 |
| 101b | 115 |
| 110b | 120 |
| 111b | 125 |