TPS65218: PWR_EN pin design

HS FAE Germany

Part Number: TPS65218
Other Parts Discussed in Thread: AM3352,

Hello,
customer uses the TPS65218 with the AM3352. He has some seldom booting problems on some boards and supposes that PMIC_POWER_EN was not going high. They don't use the RTC and WAKEUP feature.

Question: Can they set the PMIC PWR_EN pin high with a pullup to 1.8V, and no more the pull down and the connection to the AM3352 PMIC_POWER_EN?

Regards, Holger

over 5 years ago

0 Karl Wallinger over 5 years ago

TI__Genius 16030 points

Hi Holger,

Thanks for reaching out to us. I've assigned this post to the appropriate applications engineer, he will look at this question.

Regards,
Karl

0 Richard Solarski over 5 years ago

TI__Genius 10885 points

Hi Holger,

Yes, they may use a pull-up to supply PWR_EN.

PWR_EN only needs to be asserted within 20s to be valid.

Best Regards,

Rick S.

Power management

Power management forum

TPS65218: PWR_EN pin design