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UCPD : TCPP01-M12 as source power delivery

ashutoshtekriwal
Associate III

‎2024-09-27 01:30 AM

I am using STM32L562 family microcontroller. I have interfaced TCPP01-M12 with my microncontroller. I have a doubt , whether i can use this device when using UCPD in source mode, as i am unable to configure software packages for source mode(X-CUBE-TCPP). It shows that i have to enable tcpp02-03 to use ucpd in source mode. Kindly verify if support of TCPP01 in source mode is provided or not. If it is not provided what efforts will it take to use TCCP01 in UCPD source mode. 

 

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6 REPLIES 6
Peter BENSCH
ST Employee

‎2024-09-27 02:51 AM

TCPP01-M12 is not reconfigurable and can only be used for sink applications.

For source applications, you must in fact use TCPP02-M18 instead.

Only TCPP03-M20 can be used as a Dual Role Power Device (DRP) for both.

Hope that helps?

Good luck!
/Peter

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
Andrew Neil
Guru
In response to Peter BENSCH

‎2024-09-27 03:00 AM

Indeed - the clues are in the names:

AndrewNeil_0-1727431104062.png

AndrewNeil_1-1727431165664.png

AndrewNeil_2-1727431232921.png

 

 

ashutoshtekriwal
Associate III
In response to Peter BENSCH

‎2024-09-27 03:51 AM

I have old datasheet(DS12900 - Rev 4 - December 2020), in which it was mentioned that tcpp01 can be used in ucpd source mode as well as sink mode. I am attaching the screenshot . Kindly verify

ashutoshtekriwal_0-1727434256541.png

 

 

 

 

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Peter BENSCH
ST Employee
In response to ashutoshtekriwal

‎2024-09-27 04:24 AM

Well, in principle you can actually use TCPP01-M12 as source, but the restrictions are also mentioned in section 6.7. So TCPP02-M18 is necessary for full source functionality:

Note that the proposed design does not provide VCONN switches. As a consequence, it can handle low speed, full speed, high speed, super speed USB data rate. Also SOURCE current is limited to 3 A (no active cable support).

Regards
/Peter

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
ashutoshtekriwal
Associate III
In response to Peter BENSCH

‎2024-09-27 05:45 AM - edited ‎2024-09-27 05:46 AM

Thanks Peter for the quick reply.Can this restriction affect the functionality in ucpd source mode? Apart from that if I have to use tcpp01 for source mode what are the work I need to put in as I have a custom stm32l5 board with same design for tcpp01 for ucpd source. Your advice will be greatly appreciated.

 

Regards,

Ashutosh

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MROUV.1
ST Employee
In response to ashutoshtekriwal

‎2024-10-09 12:45 AM - edited ‎2024-10-09 12:50 AM

Dear Ashutosh,

Thanks for sharing your case.

 

STM32-UCPD + TCPP echo-system for Type-C Power Delivery has frozen one applicative case per TCPP :

  • TCPP01-M12 for SINK
  • TCPP02-M18 for SOURCE
  • TCPP03-M20 for Dual Role Power

Only, these cases are supported at Cube-MX level with code generator :

 

The goal is to provide only functional and optimized solution but also ready to be certified SW + HW solution.

I warmly recommend following this recommendation : TCPP02-M18 for SOURCE.

 

A key example is a dual 60W SOURCE based on the STM32G071RB + TCPP02-M18 + STPD01 (programmable buck converter) :

https://www.st.com/en/evaluation-tools/steval-2stpd01.html

 

Even if not recommended, it is possible to use TCPP01-M12 on SOURCE mode. It has been done (prior the availability of TCPP02-M18) on 27W SOURCE example :

https://www.st.com/en/evaluation-tools/steval-usbpd27s.html

Then, code has to be generated at IDE level thanks to FW examples.

 

Hope it clarifies,

Best regards,

Mathieu

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