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Original question:

USB C PD test device.

TPS65987D: USB PD application

Needhu Gunasegaran
Intellectual 2890 points
Part Number: TPS65987D
Other Parts Discussed in Thread: LM3489, TPD6S300, TIDA-050012, USB-C-PD-TKT-EVM, TPS62177, TPD6S300A

Hello,

Could you please help me on a quick question on USB pd profile 5. 

Are the following devices sufficient in completing a design for USB PD (profile 5).

  • TPS65987D
  • LM3489 or any new recommended controller?
  • TPD6S300 or TPS8S300? 

Do we need any other device to complete the design? 

Do you have a good example reference design? 

Thanks,
Needhu

  • 0
    TI__Mastermind 36756 points

    Hi Needhu,

    What do you mean when you are referring to PD Profile 5?

    By looking at the devices you described, it seems that you are wanting a High-Voltage PD charger? If that is the case, you can refer to the USB-C-PD-TKT-EVM or to the TIDA-050012 reference design.

    Thank you,
    Eric

  • 0 in reply to Eric Beljaars
    TI__Intellectual 2890 points

    Eric,

    Thank you very much for your feedback. 

    I guess profile 5 is a customer terminology. 

    Bildergebnis für profile 5 USB PD

    Hope this pic explains the terms. 

    The customer wants to work on a new 100W PD application. (required voltages are 5, 12, 20V @3A and  20V @ 5A.

    In the schematics of TIDA-050012, I am missing the ESD diodes. I will look into these TIDA's again and promote it to my customers. 

    Could you once again look into the device list and confirm if the said TI devices are sufficient or if i need to add something?  

    • TPS65987D (USB PD controller)
    • LM3489 or any new recommended controller? (Buck Controller) 
    • TPD6S300 or TPS8S300? (ESD protection)
    • TPS62177 - (Buck converter)

    Thanks,

    Needhu

  • 0 in reply to Needhu Gunasegaran
    TI__Mastermind 36756 points

    Hi Needhu,

    To be compliant to the latest PD specification, they must be able to support 5V, 9V, 15V, and 20V if they will provide 60W or more power from their Type-C port. 12V is a non-standard PD Voltage but can be added without violating the spec. However, the 4 standard voltage must be supported for compliance (5V, 9V, 15V, and 20V). From your parts list, I would suggest working with the DC/DC controller team to find a different Buck Controller since the LM3489 is limited to 4A. For the Type-C protection, the TPD6S300A should be used. The other devices look good to me.

    Thank you,
    Eric