IWR1443BOOST: Does program IWR1443 could damage PMIC?

feng tang

Part Number: IWR1443BOOST
Other Parts Discussed in Thread: IWR1443

Does program IWR1443 can damage PMIC? If yes, can you explain it? We try to program IWR1443, the PMIC stop working. Is anyone know why?

Thanks,

Feng

over 4 years ago

0 Vaibhav Mahimkar over 4 years ago

TI__Mastermind 23725 points

Hello

THis is not expected? Can you please help us understand the scenario better and provide more details.

Thank you,

Vaibhav

0 feng tang over 4 years ago in reply to Vaibhav Mahimkar

Genius 3595 points

We try to switch between PMIC PWM mode (default mode) and PFM mode to save the power, the PMIC output for 3.3V changed to 4.5V on one board, the PMIC other output 1.0V and 1.8V are correct. Do you know what could cause PMIC 3.3V output being changed to 4.5V? Any thought?

Thanks,

Feng

0 Ishita Kochar over 4 years ago in reply to feng tang

TI__Mastermind 31680 points

Hello Feng,

Thank you for the explanation. Let me forward your query to a hardware expert. Please expect a response within a day or two.

Regards,

Ishita

0 aozer over 4 years ago in reply to feng tang

TI__Mastermind 30715 points

Hello Feng,

Are you sure you wrote the correct value to the correct register? Did you first read the register before you wrote it to make sure it was at the expected value?

It is possible that you have accidentally wrote the wrong register and incorrectly configured one of the bucks to 4.5V. Can the customer provide details about which register/value they wrote?

Regards,

Adrian

Sensors

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IWR1443BOOST: Does program IWR1443 could damage PMIC?