2024年6月7日发(作者：)

pmbus读输出电流

PMBus (Power Management Bus) is a communications protocol

that allows digital control and monitoring of power supplies and

power converters in computer systems. It enables the system to

read and adjust various parameters of the power supply, including

output voltage, output current, and other power-related

measurements.

To read the output current of a power supply using PMBus, the

following steps can be followed:

1. Initialize the PMBus interface and establish communication with

the power supply controller.

2. Identify the address of the power supply device and select the

appropriate command for reading output current. This can typically

be done through PMBus commands such as READ_IOUT,

READ_IOUT_HISTORY, or READ_IOUT_CALIBRATION.

3. Send the command to the power supply using the PMBus

interface.

4. Receive and decode the response from the power supply. The

output current value may be provided in raw format or as a

calibrated and formatted value.

5. Convert and interpret the received data to obtain the output

current measurement. This may involve applying scaling factors,

offset values, or performing any necessary calculations based on

the power supply's specifications.

6. Process and utilize the output current measurement as needed in

the system, such as for monitoring, control, or further analysis.

It is important to note that the exact details and commands for

reading output current using PMBus can vary depending on the

specific power supply and its implementation of the PMBus

protocol. Therefore, it is recommended to refer to the

documentation and datasheets provided by the power supply

manufacturer for accurate and detailed instructions on how to read

the output current using PMBus.