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WEBENCH® Tools/TPS63036: Webench - No designs found

Jason Whiteman
Prodigy 90 points
Part Number: TPS63036
Other Parts Discussed in Thread: TPS63024, , TPS63050

Tool/software: WEBENCH® Design Tools

I did not find any designs in webench for the TPS63036.   I did find designs for the TPS63024 and TPS63050 parts.  I understand TPS63050 is a newer part (than the 036) but do like to use Webench for quick efficiency calculations and also appreciate the fast-track design with parts already suggested - although I use these as general guidance more than anything else.

My interest in the part is:

... which shows of the 3 regulators, the TPS63036 has the lowest Iq, allows for the lowest switching freq (power save mode) and my application is low current in terms of the range of these parts.  Input voltage is between around 2.7-3.6V (battery application) and output voltage of 3.0V which is what a buck+boost is targeted.  Low Iq and lower switching frequencies are looked at as efficiency gains (counting constant loads as part of the "efficiency" story) for the TPS63036 vs the other alternatives.   For apples-to-apples data, I'd like to see a TPS63036 Webench sim which allows for showing power-save mode enabled to compare against the efficiency of the 024 primarily.  The output discharge of the 024 is not a key feature for my design - so this as a feature of the 024 is not "interesting".  The 024 as the comparison mostly due to lower cost.

 

  • 0
    Prodigy 90 points
    Note: HTML that was referenced does not work - but it's not very critical. It was simply the part compare page for the 3 parts (024, 036, and 050).

    Here's a screenshot instead.

    imgh.us/compare_parts_buckboost.png
  • 0
    TI__Guru**** 150820 points
    As Webench is only an estimate or calculation, I recommend comparing the efficiency graphs in each D/S as this is measured/real data.

    What is the load current of interest? What is your maximum load?

    The TPS63050 is a newer device, with a focus on high efficiency. As well, light load efficiency is generally higher with devices that are better sized to this current--lower current devices like the TPS63050.
  • 0 in reply to Chris Glaser
    Prodigy 90 points
    Thanks for the feedback. Webench has efficiency curves over input current sweeps including low-current sweeps which cover the max load conditions (1mA-100mA). Paper napkin tells me around 80mA (includes some fudge). Measured data will come somewhat further down the line after first PCB prototype. What I like about Webench's curves is that they are tuned (supposedly) to the conditions I give it. I do see the efficiency curves for the conditions noted in the respective datasheets. For now (before your feedback) I had penciled the TPS63050 in the design although I need to fill out my matrix a little more.