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TPS25750EVM: Sink PDOs setting in advanced configuration for 20V/5A/100W Sink only

Koshi Ninomiya
Expert 4330 points
Part Number: TPS25750EVM
Other Parts Discussed in Thread: TPS25750, TPS25751, TPS25751EVM

Tool/software:

Dear Team,

My customer is evaluating the TPS25750EVM with a USB PD Adapter. They want to operate the TPS25750EVM in power sink only, especially 20V/5A/100W sink only.
They want the TPS25750D turn off the power path (PPHV) when a Type-A to Type-C cable (VBUS=5V), a 9V USB PD Adapter through Type-C cable or a 15V USB PD Adapterr through Type-C cable is connected.
They want the TPS25750D turn on the Power path (PPHV) when only a 20V USB PD Adapter through Type-C cable is connected.

For this 20V/5A/100W sink only requirement, how do they set the Sink PDOs in advanced configuraiton of TPS25750 Application Customization Tool?

It seems that we can not set 5A and 20V at Sink PDO1 under Number Valid PDOs = 1.
Under Number Valid PDOs = 2, we can set 5A and 20V at Sink PDO2. 
Does this work to their required specifications?

Can you show me an example of advanced configuration, Sink PDOs setting, that meet the customer's requirements, please?

*I saw the below thread and asked the customer to try Flash to Device From Binary file  "20V_5A_PDO.bin" on their TPS25750EVM. But the TPS25750EVM sinks 15V too, not only 20V. And that they can not see the configuration register settings after writing to the TPS25750EVM on the TPS25750 Application Customization Tool.
Are there any way to see the configulation register settings after Flash to Device From Binary file?

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1267621/tps25750evm-pdos-in-advanced-configuration-not-working/4839423?tisearch=e2e-sitesearch&keymatch=TPS25750EVM#4839423

Please show me an example of advanced configuration, Sink PDOs setting, that meet the customer's requirements.
Thank you.

Best Regards,

Koshi Ninomiya

  • 0
    TI__Expert 4330 points

    Dear Team,

    Summarize the customer's requirements as follows,

    - TPS25750D operates Power Sink Only mode at only 20V/5A/100W.
    - TPS25750D turn off the power path (PPHV) when a Type-A to Type-C cable (VBUS=5V), a 9V USB PD Adapter through Type-C cable or a 15V USB PD Adapterr through Type-C cable is connected.
    - TPS25750D turn on the power path (PPHV) when only a 20V USB PD Adapter through Type-C cable is connected.

    1. When the Type-C connector is connected, the power path (PPHV) remains off.
    2. PD is negotiated and the supplied power from Source side is confirmed match.
    3-1. Supply power matches at the time, the power path (PPHV) turns on and supplies power to the subsequent stage.
    3-2. Supply power does not match at this time, the power path (PPHV) remains off and power is not supplied to the subsequent stage.
    *The customer wants the TPS25750D to make a decision in 3, 3-1 or 3-2, by itself.

    The customer is evaluating the TPS25750EVM in Safe Mode by ADCIN1=ADCIN2=0.

    Please show me an example of advanced configuration, Sink PDOs setting, that meet the customer's requirements.
    Thank you.

    Best Regards,

    Koshi Ninomiya

  • 0 in reply to Koshi Ninomiya
    TI__Genius 13435 points

    Hi Koshi,

    Thanks for reaching out on E2E!

     Is there a reason the customer is using TPS25750 rather than TPS25751?

    Thank you,

    Kevin

  • 0 in reply to Kevin Kosta
    TI__Expert 4330 points

    Hi Kevin-san,

    Please show me an example of advanced configuration settings, Sink PDOs setting, that meet the customer's requirements, first.

    I know that the TPS25751 is the new version of TPS25750. However, when the customer begins evaluating and testing USB PD Sink Only system, TPS25750EVM is available as free sample, but TPS25751EVM is not available as free sample. And inventory of the TPS25751DREFR in the TI.com store is very limited and I thought it was not suitable for the customer of make their protobype boards.

    Best Regards,

    Koshi Ninomiya

  • 0 in reply to Koshi Ninomiya
    TI__Genius 13435 points

    Hi Koshi-san,

    Please see my comments:

    Koshi Ninomiya said:
    For this 20V/5A/100W sink only requirement, how do they set the Sink PDOs in advanced configuraiton of TPS25750 Application Customization Tool?

    You cannot do only a 100W variable contract. The PD spec requires all Power Delivery products to support a 5V 3A PDO regardless of its maximum capabilities.

    Koshi Ninomiya said:

    - TPS25750D operates Power Sink Only mode at only 20V/5A/100W.
    - TPS25750D turn off the power path (PPHV) when a Type-A to Type-C cable (VBUS=5V), a 9V USB PD Adapter through Type-C cable or a 15V USB PD Adapterr through Type-C cable is connected.
    - TPS25750D turn on the power path (PPHV) when only a 20V USB PD Adapter through Type-C cable is connected.

    1. When the Type-C connector is connected, the power path (PPHV) remains off.
    2. PD is negotiated and the supplied power from Source side is confirmed match.
    3-1. Supply power matches at the time, the power path (PPHV) turns on and supplies power to the subsequent stage.
    3-2. Supply power does not match at this time, the power path (PPHV) remains off and power is not supplied to the subsequent stage.
    *The customer wants the TPS25750D to make a decision in 3, 3-1 or 3-2, by itself.

    As of now I believe the TPS25750D only supports an internal power path. I will double check with the team on the feasibility of these requests.

    Thank you,

    Kevin

  • 0 in reply to Kevin Kosta
    TI__Expert 4330 points

    Hi Kevin-san,

    We understand "You cannot do only a 100W variable contract. The PD spec requires all Power Delivery products to support a 5V 3A PDO regardless of its maximum capabilities".

    Please check an attached file below,
    The customer tested Several USB Type-C PD Adapters under Number valid PDOs=2, Sink PDO1=5V/3A and Sink PDO2=20V/3A (target setting=20V/5A/100W) settings. However, the TPS25750EVM turned on the Power Path (PPHV) at the 15V/3A USB Type-C PD Adapter, it is not their requirement.

    TPS25750EVM Sink-Only Configuration Setting Test 20240604.xlsx

    How should they set configuraion registers to operate;
     - TPS25750D turn off the power path (PPHV) when a Type-A to Type-C cable (VBUS=5V), a 9V USB PD Adapter through Type-C cable or a 15V USB PD Adapterr through Type-C cable is connected.
     - TPS25750D turn on the Power Path (PPHV) when only 5V and 20V USB PD Adapter through Type-C cable is connected.

    Could it be that the TPS25750D turn on the Power Path (PPHV) when Source side powre is less than or equal to the maximum sink setting under Number valid PDOs=2, Sink PDO1=5V/3A and Sink PDO2=20V/3A (target setting=20V/5A/100W) settings?

    Best Regards,

    Koshi Ninomiya

  • 0 in reply to Koshi Ninomiya
    TI__Genius 13435 points

    Hi Koshi-san,

    Closing this based on Adams email. If you have any other questions please let me know.

    Thank you,

    Kevin