SLVSH95 July 2024 TPS546C25
ADVANCE INFORMATION
| CMD Address | 8Ch |
| Write Transaction: | N/A |
| Read Transaction: | Read Word |
| Format: | lINEAR11 |
| Phased: | YES |
| NVM Backup: | No |
| Update Rate: | 70 µs |
The READ_IOUT command returns the measured SW output current in Amperes. See Telemetry for more details.
Return to Supported PMBus Commands.
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 |
| R | R | R | R | R | R | R | R |
| EXPONENT | READ_IOUT | ||||||
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| R | R | R | R | R | R | R | R |
| READ_IOUT | |||||||
| LEGEND: R/W = Read/Write; R = Read only |
| Bit | Field | Access | Reset | Description |
|---|---|---|---|---|
| 15:11 | EXPONENT | R | 11010b |
Linear format two’s complement exponent. Fixed exponent of -6 resulting in 0.015625A LSB for single, and variable for multi-stack |
| 10:0 | READ_ IOUT | R | Current Status | Output current reading. Max current capability of CSA telemetry is 45.7A See Telemetry for more details. |
When the PMBus host attempts to execute a P2+ read on READ_IOUT with the PHASE data in the command set to FFh, only the primary device will respond to P2+ read commands with incoming data for PHASE=FFh. The primary device multiplies the READ_IOUT level by the STACK_NUMBER and reports the product back on the PMBus. For example, if the READ_IOUT is 24A for the primary phase in a 3-phase rail, then a P2+ read with PHASE=FFh will yield 24 x 3 = 72A as the read-back value.