Tool/software: WEBENCH® Design Tools
Hi
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Tool/software: WEBENCH® Design Tools
Hi
Hi Yokota,
I looked at it, and found this -
The peak switch current reaches ~0.4 A at this operating condition with an Iav(avg input current) of ~0.348 A and pk-pk ripple of 0.1 A.
The minimum switch current limit in the datasheet is 0.455 A for TPS61071-Q1.
Additionally, we took some margin of 15 percent over the calculated peak switch current(1.15*0.4=0.46A >0.455) for being conservative.
This led to the design failure.
I am removing this additional margin of 15 percent, and this will cause the design to accurately create for your condition in our next release to ti.com/TPS61071-Q1.
For now, I will suggest you to lower the Iout to 0.19 A and look at the design which will be almost similar to 0.2 A condition.
Once we are able to simulate the design for 0.2 A, I will let you know as well.
Let me know for any more question
Thanks
sahil