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TPS563200 6.8uH operation

Dear TI

Customer's condition is as below

12Vin ,3.3Vo, L=4.7uH, Cout=47uF,  Io=0.4A.

In above case, 0.4A is transition point between PFM and PWM, so output voltage is unstable and then ripple is increased.

So customer'd like to shift this transition point by using 6.8uH inductor. But 6.8uH is out of spec on datasheet.

She is asking that if change inductor to 6.8uH, is there any problem or not.

If you have any experience,please let me know.

Thank you and best regards

K.Narisawa