TPS25730: Schematic Checklist

Hideki Hayashi1

Expert 8380 points

Part Number: TPS25730
Other Parts Discussed in Thread: TPS25810,

Tool/software:

Hi team,

Would you share schematic checklist for TPS25730"S" and TPS25810?

I have only this one. 7563.Schematic Checklist Rev 2p0.xlsx

Regards,

Hayashi

10 months ago

0 Conner Gillette 10 months ago

TI__Genius 13880 points

Hi Hayashi,

I'm putting together the schematic check lists now and should have them completed by the Thursday.

Regards,

Conner

0 Hideki Hayashi1 10 months ago in reply to Conner Gillette

TI__Expert 8380 points

Hi Conner,

Do you have update on the check list?

And please check the below design for TPS25730D which filled by customer.

Schematic Checklist Rev 2p0_TPS25730D.xlsx 【TPS25730D】Peripheral Devices_20241024.pdf

Regards,

Hayashi

0 Conner Gillette 10 months ago in reply to Hideki Hayashi1

TI__Genius 13880 points

My apologies for the delay. I will have this to you by tomorrow, EOB.

Regards,

Conner

0 Hideki Hayashi1 10 months ago in reply to Conner Gillette

TI__Expert 8380 points

Hi Conner,

Please share the checklist and review the customer's schematic?

REgards,

Hayashi

0 Aya Khedr 10 months ago in reply to Hideki Hayashi1

TI__Mastermind 29932 points

Hi Hayashi,

Thank you for your patience. Conner is currently out of office and will get back to you soon.

Best Regards,

Aya Khedr

0 Hideki Hayashi1 9 months ago in reply to Aya Khedr

TI__Expert 8380 points

Hi Aya, Connor,

It took so about 3 weeks, customer can't wait more. Please give me a schematics checklist for TPS25730S and TPS25810? Also please review the schematic attached 2 weeks ago?

Regards,

Hayashi

0 Conner Gillette 9 months ago in reply to Hideki Hayashi1

TI__Genius 13880 points

I will complete this and update you first thing tomorrow.

Regards,

Conner

0 Hideki Hayashi1 9 months ago in reply to Conner Gillette

TI__Expert 8380 points

Hi Conner,

Please disregard the checklist because customer will not use TPS25730S. Can you please proceed schematic review for TPS25730D.

Regards,

Hayashi

+1 Conner Gillette 9 months ago in reply to Conner Gillette

TI__Genius 13880 points

Please find attached the updated schematic review checklist for the TPS25730S.

Additionally, after reviewing the [TPS25730D] Peripheral Devices_20241024.pdf schematic, the FAULT_IN/ pin needs to be tied to LDO_3V3 through a 10k resistor for the part to function. Outside of that correction, I do not see any additional issues with the schematic.

While I am working on putting together the schematic review checklist for the TPS25810, I would recommend looking at section 8.2 of the TPS25810 datasheet for guidance on checking your TPS25810 schematic.

Regards,

Conner

Schematic Checklist Rev 2p1.xlsx

0 Hideki Hayashi1 9 months ago in reply to Conner Gillette

TI__Expert 8380 points

Hi Conner,

Customer consider to use Debug Accesary Mode.

Could you let me know how to enable Debug Accessory Mode and assert the DBG_ACC pin? Customer would like to pull up or down the CC pin from an external device connected to the Type C receptacle.
Customer consideration below
TPS25730D ⇔ a board to pull up or pull down CC ⇔ PD adapter

Regards,

Hayashi

0 Conner Gillette 9 months ago in reply to Hideki Hayashi1

TI__Genius 13880 points

The DBG_ACC pin only notifies when a debug accessory is connected (as it is an output) by detecting Rd/Rd or Rp/Rp connections on CC1/CC2.

Regards,

Conner

0 Hideki Hayashi1 9 months ago in reply to Conner Gillette

TI__Expert 8380 points

Hi Connor,

What customer wants to know is how much pullup resistor and pulldown resistor presenting TPS25730 can detect as Debug Accessory Mode.

In addition please check customer's schematic,【TPS25730S,TPS25810】Peripheral Devices_20241021.pdf

I found caps at IN pin is OK, VBUS cap (OUT pin) is OK, Resistor between REF pin and REF_RTN pin is OK, and unused inidcators are left floating. CHG, CHGHI pin has pull-up to V5A, I think it doesn't make problems. What about other concerns?

Regards,

Hayashi

0 Conner Gillette 9 months ago in reply to Hideki Hayashi1

TI__Genius 13880 points

Rp and Rd are defined by the USB-C spec: see sections 4.11.3.1.1 and 4.11.1.

After reviewing the customer's schematic, I see no issues with their implementation of the TPS25810.

Regards,

Conner

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TPS25730: Schematic Checklist