PMBUS communicates with I2C MCU

MichaelK

Hi, sir

As we know, there are many digital power controller IC, and PMbus is a main interface to configure,control and monitor the power.

But the MCU we used doesn't have PMbus interface, only has I2Cs, So I have two questions.

1. Can I connect the PMBUS to the I2C master in the MCU, and connect the PMALERT to a GPIO in the MCU? will there be some extra software implement for their communication?

2. Can i connect a PMBUS device and other general I2C devices to a common I2C master? will there be conflict?

Hope for your reply

Thanks!

over 6 years ago

0 Benjamin Lough over 6 years ago

TI__Mastermind 27095 points

Hi Michael,

Could you share what MCU you are using? I can better assist you if you can share the part number of the MCU you are using.

Best Regards,
Ben Lough

0 MichaelK over 6 years ago in reply to Benjamin Lough

Intellectual 370 points

Hi Benjamin,

Thanks for your reply!

The MCU we used is IMAPX912] designed by INFORM，which is a Chinese company.

0 Benjamin Lough over 6 years ago in reply to MichaelK

TI__Mastermind 27095 points

Hi Michael,

I can only comment on TI controllers unfortunately. I suggest you reach out to INFORM for support on their MCU.

Best Regards,

Ben Lough

0 MichaelK over 6 years ago in reply to Benjamin Lough

Intellectual 370 points

Hi BEN,

I think it's about general I2C and PMBUS, not specific MCU

Power management

Power management forum

PMBUS communicates with I2C MCU