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TPS62175: typical application

Part Number: TPS62175


There was IC damage issue.

Condition is 1.8V output and 0.5A.

When input is above 20V, IC damage occured.

I thought it was related to minimum on time.

On time is 90ns at 1MHz switching frequency and minimum on time is typically 80ns.

But typical application shows that input range is up to 28V and output is 1.8V.

Is it available?

Next, with increasing output capacitance to 220uF, it is solved.

I don't understand the relation of output capacitance and input voltage range.

Could you advice for this issue?