TPS65218 for AM437x VDDS_RTC

takeshi matsuzaki

Expert 2030 points

Other Parts Discussed in Thread: TPS65218

Hello
I have two questions.

1)
In this document,
www.ti.com/.../slvuaa9.pdf
TPS65218.DCDC6 gives 1.8V to AM437x.VDDS_RTC.

but in AM437xEVM, a external buck(TPS78101) gives 1.8V to AM437x.VDDS_RTC.
Why TPS78101 is used for AM437x.VDDS_RTC in EVM ?

2)
In this document,
www.ti.com/.../spruhw7.pdf
P6, NOTE:
The TPS65218 power management IC that is used on the AM437x GP EVM rev. 1.2 has
several issues that can affect operation. See the errata for the TPS65218 for more details.

where is TPS65218 Errata ?
and does the errata have something to do with using TPS78101 in EVM ?

Regards,
Takeshi Matsuzaki

over 10 years ago

0 takeshi matsuzaki over 10 years ago

Expert 2030 points

Hello, Any reply ?

Regards,
Takeshi Matsuzaki

0 Biser Gatchev-XID over 10 years ago

TI__Guru**** 393215 points

Hi,

I will ask the EVM design team to comment on your first question. For the availability of the Errata document, please ask on the PMU forum: https://e2e.ti.com/support/power_management/pmu/f/200

0 peaves over 10 years ago in reply to Biser Gatchev-XID

TI__Guru 63605 points

The TPS65218 DCDC6 issues which caused the external buck to be added to the EVM has been resolved. The next revision of AM437 General Purpose EVMs will be using DCDC6 from the PMIC rather than external buck.

If you still need the TPS65218 errata, post your rquest to the power management E2E forum. https://e2e.ti.com/support/power_management/pmu/

Regards,
Paul

0 takeshi matsuzaki over 10 years ago in reply to peaves

Expert 2030 points

Hi,

I understood TPS65218 DCDC6 had some issues, so that external buck is used.
I'll ask about TPS65218 errata on power management E2E forum.

Thanks a lot.

Regards,
Takeshi Matsuzaki

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TPS65218 for AM437x VDDS_RTC