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TPS65987D:Is the USB-C-PD-DUO-EVM　sink board initially set at 5V with a current setting of 0.9A?

user1866475
Intellectual 350 points
Part Number: TPS65987D
Other Parts Discussed in Thread: TPS6598X-CONFIG, TIDA-050014, TIDA-050012, TPS65987

Hi all,

Is the USB-C-PD-DUO-EVM　board initially set at 5V with a current setting of 0.9A?

Can I change this to 5V3A ?

If it can be changed, what procedure is used to change it?

Best Regards,

  • 0
    TI__Genius 9105 points

    Hi!

    I do not know which side you are referring to (source or sink board) but you can refer to the EVM User Guide for information on how to program it and setup base configurations on both boards.

  • 0
    TI__Mastermind 36751 points

    Hi,

    The USB-C-PD-DUO-EVM should be set to support 3A on each of the supported PDOs out of the box (5V, 9V, 15V, & 20V).

    If you'd like to change the configuration on the EVM, you will need to download the TPS6598x-CONFIG GUI tool: https://www.ti.com/tool/TPS6598X-CONFIG#downloads

    Once you've downloaded the GUI, you can select "New Project", then TPS65987DDHRSHR as the Device, and finally, you can select either TIDA-050012 for the Source side, or TIDA-050014 for the sink side. Note that the DC/DC on the source EVM is only set to enable 5V, 9V, 15V, & 20V so the hardware cannot support other source voltages.

    The steps needed to program each EVM is highlighted by Chris above.

    Thank you,
    Eric

  • 0 in reply to Eric Beljaars
    Intellectual 350 points

    Hello Eric-san,

    Sorry, I forgot to say which board I was asking about. I wanted to know about the current setting at 5V on the sink board side.

    I also looked at the user guide shown by Chris, and I would like to know where to set the current setting for sinking in the Application Customization Tool. I am not familiar with Power Delivery and tps65987 yet.

    Does the Transmit sink Capable determine it? 

    According to the following, the maximum current is 3 A at PDO1. However, when tested with an electronic load, it is interrupted at 0.9 A. I have changed the operating current of 0.9 A. However, in that case, the source side transitioned on its own to the maximum voltage that could be supplied immediately after connection. In other words, the source does not operate at VBUS = 5 V when the operating current setting is changed.

    Please tell me how to set the source to supply 3 A at VBUS = 5 V.

    Best Regards,

    Yukio Oyama

  • 0 in reply to user1866475
    TI__Mastermind 36751 points

    Hi Oyama-san,

    Both the Source and Sink board from USB-C-PD-DUO-EVM leverage the Virtual Device configuration that you can see on top of the GUI tool. This will allow for the active PDO's to change when pressing the push buttons on the EVM. To support 5V/3A, you will need to adjust both the Source capabilities on the Source EVM along with the Sink capabilities on the Sink EVM.

    Thank you,
    Eric

  • 0 in reply to Eric Beljaars
    Intellectual 350 points

    Hello Eric-san,

    Which parameters should I set to operate up to 5V 3A?

    I seem to have misunderstood that only the sink board determines the cut-off current. The cut-off current showed different values for different sources.

    The Sink board of the USB-C-PD-DUO-EVM  is cut off at 0.9A at 5V when connect my custom board. My custom board is configured as a power source using your TPS65987 and the parameters are in the attached.

    If I connect the Source board and the Sink board of the USB-C-PD-DUO-EVM each other and perform a load test with VBUS = 5V on the Sink board, it cut off at 2A.

    On USB-C-PD-DUO-EVM, both sink and source boards are loaded with the default project of the New project in the Application customization tool.

    Which parameter on the Source and Sink side determines this disconnection?

    MyCustomPjt.pjt

    Best Regards,

    Yukio Oyama

  • 0 in reply to user1866475
    TI__Mastermind 36751 points

    Hi Oyama-san,

    Both the source and sink PDO's on each end of the cable need to be set for 3A to enable 3A. Based on the description you provided, it seems like one of the two devices is not set for 3A and causing a disconnect when loading due to overcurrent protection from the negotiated PDO.

    Thank you,
    Eric

  • 0 in reply to Eric Beljaars
    Intellectual 350 points

    Hello Eric-san,

    The current setting at 5 V is 3 A for all sources and sinks.
    According to you, the disconnection is explained as the setting is not 3A.

    Since the settings are all set to 3A, is the disconnecting behavior before 3A is reached a fault in the operation of your TPS65987?

    You should have already checked the project I have shown you, but I am attaching a screen on the tool that I have confirmed is set to 3A.

    USB-C-PD-DUO-EVM source setting

    USB-C-PD-DUO-EVM sink setting

    my custom board setting (Source only)

    Best Regards,

    Yukio Oyama

  • +1 in reply to user1866475
    TI__Mastermind 36751 points

    Hi Oyama-san,

    I see that your sink PDO is set to operating current of 0.9A. Please adjust the operating current to 3A.

    Thank you,
    Eric

  • 0 in reply to Eric Beljaars
    Intellectual 350 points

    Hello Eric-san,

    I set the operating current to 3A at the sink PDO.  then I could load the current to 3A. Thank you.


    However, I have a question. I have set the "maximum operating current" to 3A at the sink PDO, does it not work 3A if I set up here??
    Checking for higher capability, does it operate 3A even if the operating current is 0.9A?

    Best Regards,

    Yukio Oyama

  • 0 in reply to user1866475
    TI__Genius 9105 points
    user1866475 said:
    I have set the "maximum operating current" to 3A at the sink PDO, does it not work 3A if I set up here??

    No it does not because the Sink PDO is set to 0.9A so Source will not allow more than 0.9A

    user1866475 said:
    Checking for higher capability, does it operate 3A even if the operating current is 0.9A?

    Operating Current field is important to set to 3A as well.

    Thanks,

    Chris

  • 0 in reply to Christodulos Tsongas
    Intellectual 350 points

    Hello Chris-san,

    I understood that the current is determined by the operating current at sink. Thanks.

    Best Regards,

    Yukio Otyama