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Original question:

WEBENCH® Tools/TPSM82810: Webench Simulation Release Date?

TPSM82810: RCF Resistor Value in WEBENCH vs Datasheet

Alpha H
Genius 10855 points
Part Number: TPSM82810

Hi folks, 

I'm using the TPSM82810 and trying to configure WEBENCH for my design. According to the datasheet I see three options for setting the COMP_FSET resistor to set the compensation but no matter what I se the supply to in WEBENCH the RCF resistor value does not change. 

I am using the supply for two rails:

3.3V to 1.8V @ 3.0 amps

3.3V to 0.9V @ 4.0 amps

Is the WEBENCH model incorrect? Should I leave the RCF resistor at 10K = 1.8MHz FSW per WEBENCH, or should these values be tweaked? 

Thanks,

AH

  • 0
    TI__Guru*** 142860 points

    Hi Alpha,

    Yes, you can use the same resistor for all designs. Is there a reason why you think the resistor should change for different output voltages?  

    If you want to use a different compensation setting or frequency, you can adjust the design on the left-hand side in the Configuration Options.