Using PPK to measure the power of nRF54L15 DK made it broken

Hi

I have one nordic nRF54L15 DK using as peripheral, I want to know the power of it. Thus, I use PPK2 to be a 1.8 voltage source and connect VOUT to P6 pin 1 and GND to P6 pin 1 as the diagram shows:

At first it works well, but when I increase voltage to 3.7V, the DK is broken. I found that somehow P6 pin1 and P6 pin 2 are shorted.

I want to ask that whether this is a correct way to measure thre power. I have tried using current measurement but the power is somehow to samll, and it canot show the maximum current change when I tuning the TXP.  Whether P6 is only used to measure the current? By the way, how could I fix the development KIT.

Thank you so much!

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