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TPS546C20AEVM1-746: I am curious about the output control method and the connection method.

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Replies: 4

Views: 307

Part Number: TPS546C20AEVM1-746

Hi,

We are going to purchase "TPS546C20AEVM1-746".
Before purchasing the "TPS546C20AEVM1-746" we would like to confirm two things about the function.

Our test environment is "TPS546C20AEVM1-746" + "USB-TO-GPIO" + "notebook" and multimeter, oscilloscope.

[Q1]

The output we want is 0.35V ~ 1.65V / 30A.

However, on page 3 of the "User's Guide for the TPS546C20AEVM1-746" the output is described as "0.9V to 35A"

and on page 10 is described as "VOUT_SCALE_LOOP = 1 (0.35V ≤ OUTPUT VOLTAGE RANGE ≤ 1.65V) have.

Can not we get "0.35V ~, 35A" output with "TPS546C20AEVM1-746"?

 

[Q2]
We will first complete all tests on the TPS546C20A with the "TPS546C20AEVM1-746 (with Notebook)".

Next, we will design the circuit to control the TPS546C20A from the MCU.

How do I connect the MCU to the TPS546C20A to control the TPS546C20A using the PMBus in the MCU (ATmega128A)?

Thank you for reading my poor English through.

  • Kang,

    I'll have to get detailed answers for you on Monday.  You should be able to re-program the EVM for 0.35 V operation.

    Best  Regards,

    John Tucker

    BSR-MV DC/DC Applications

     

    “Working on an automotive power design? Read the E2E technical article Meet European Commission ADAS requirements with TI DC/DC for device recommendations and other helpful resources.”

     

  • In reply to JohnTucker:

    Kang,

    Also it looks like the best way to control using ATmega128 A would be to use the Two Wire Serial Interface (TWI) feature. I will see what I can find out about it next week.

    Best  Regards,

    John Tucker

    BSR-MV DC/DC Applications

     

    “Working on an automotive power design? Read the E2E technical article Meet European Commission ADAS requirements with TI DC/DC for device recommendations and other helpful resources.”

     

  • In reply to JohnTucker:

    Kang,

    I believe the information I provide above is correct. let me know if you have further questions.

    Best  Regards,

    John Tucker

    BSR-MV DC/DC Applications

     

    “Working on an automotive power design? Read the E2E technical article Meet European Commission ADAS requirements with TI DC/DC for device recommendations and other helpful resources.”

     

  • In reply to JohnTucker:

    We have received "TPS546C20AEVM1-746" and are currently testing.
    We have verified 0.35V ~ 1.60V output without any other circuit changes.
    Thank you for your comment. ^^

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