ZHCSGE0B June 2017 – January 2019 TPS53681
PRODUCTION DATA.
The IIN_OC_WARN_LIMIT command sets the value of the input current, in amperes, that causes the input overcurrent warning condition. The IIN_OC_WARN_LIMIT command must be accessed through Read Word/Write Word transactions. The IIN_OC_WARN_LIMIT command is shared between Channel A and Channel B. All transactions to this command will affect both channels regardless of the PAGE command.
Upon triggering the over-current warning, the following actions are taken:
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 |
| R | R | R | R | R | R | R | R |
| IIN_OCW_EXP | IIN_OCW_MAN | ||||||
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| R | RW | RW | RW | RW | RW | RW | RW |
| IIN_OCW_MAN | |||||||
| LEGEND: R/W = Read/Write; R = Read only |
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 15:11 | IIN_OCW_EXP | R | 11111b |
Linear two's complement format exponent, –1. LSB = 0.5 A. |
| 10:0 | IIN_OCW_MAN | RW | See below. |
Linear two's complement format mantissa. Acceptable values range from 0d (0 A) to 127d (63.5 A). |
During operation, the IIN_OC_FAULT_LIMIT may be changed to any valid value, as specified above. The IIN_OC_FAULT_LIMIT command has only limited NVM backup. The table below summarizes the values that IIN_OC_FAULT_LIMIT may be restored to following a reset, or RESTORE_DEFAULT_ALL operation.
| Hex Value | IIN_OC_WARN_LIMIT during
NVM store operation |
IIN_OC_WARN_LIMIT following
Reset/Restore Operation |
|---|---|---|
| F810h | 8 A | 8 A |
| F820h | 16 A | 16 A |
| F830h | 24 A | 24 A |
| F840h | 32 A | 32 A |
| F850h | 40 A | 40 A |
| F860h | 48 A | 48 A |
| F870h | 56 A | 56 A |
| F87Fh | 63.5 A | 63.5 A |
| Any other valid data | Any other valid data | 63.5 A |