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WEBENCH® Tools/TPS61200: current limit

Part Number: TPS61200
Other Parts Discussed in Thread: TPS62100

Tool/software: WEBENCH® Design Tools

Hi

It was failed when I check this device to operate for the following condition by WEBENCH. Because of current limit and duty cycle limit.

Condition; Vi=1.5V, Vo=4.2V, Io=0.2A

Then I checked the datasheet and the current limit which is minimum value is 1.2A.

So the simulation result is smaller than spec.

Why is this device not possible to use for the above condition?

Best Regards,

Koji Hamamoto