ZHCS614G October 2011 – September 2022 TPS40422
PRODUCTION DATA
STATUS_WORD is a paged register. The STATUS_WORD command returns two bytes of information with a summary of the device's fault/warning conditions. The low byte is identical to the STATUS_BYTE above. The additional byte reports the warning conditions for output overvoltage and overcurrent, as well as the power good status of the converter.
| COMMAND | STATUS_WORD (low byte) | |||||||
|---|---|---|---|---|---|---|---|---|
| Format | Unsigned binary | |||||||
| Bit Position | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| Access | r | r | r | r | r | r | r | r |
| Function | X | OFF | VOUT_OV | IOUT_OC | VIN_UV | TEMPERATURE | CML | NONE OF THE ABOVE |
| Default Value | 0 | x | 0 | 0 | 0 | 0 | 0 | 0 |
A "1" in any of the low byte (STATUS_BYTE) bit positions indicates that:
| OFF: | ||
| The device is not providing power to the output, regardless of the reason. In TPS4022 device , this flag means that the converter is not enabled. | ||
| VOUT_OV: | ||
| An output overvoltage fault has occurred. | ||
| IOUT_OC: | ||
| An output over current fault has occurred. | ||
| VIN_UV: | ||
| An input undervoltage fault has occurred. | ||
| TEMPERATURE: | ||
| A temperature fault or warning has occurred. | ||
| CML: | ||
| A Communications, Memory or Logic fault has occurred. | ||
| NONE OF THE ABOVE: | ||
| A fault or warning not listed in bits 1-7 has occurred | ||
| COMMAND | STATUS_WORD (high byte) | |||||||
|---|---|---|---|---|---|---|---|---|
| Format | Unsigned binary | |||||||
| Bit Position | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| Access | r | r | r | r | r | r | r | r |
| Function | VOUT | IOUT/POUT | X | MFR | POWER_GOOD | X | X | X |
| Default Value | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
A "1" in any of the high byte bit positions indicates that:
| VOUT: | ||
| An output voltage fault or warning has occurred | ||
| IOUT/POUT: | ||
| An output current warning or fault has occurred. The PMBus specification states that this also applies to output power. TPS4022 device does not support output power warnings or faults. | ||
| MFR: | ||
| An internal thermal shutdown (TSD) fault has occurred in the device. | ||
| POWER_GOOD: | ||
| The power good signal has not transitioned from high-to-low. This is not implemented in two-phase operation. | ||