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LM5122: huge (not desired )current

Part Number: LM5122
Other Parts Discussed in Thread: CSD17579Q3A, CSD16323Q3,

Hi all:

I have the next circuit , following webench guidelines. It is suposed to get 12 V input and gets up to 16 V output. When I have connected first to a lab power supply, with no charge conected, current gets higher than 5, reaching the lab power supply unit to his limits, like if there is any kind of short. I have search for some short but nothing have been found. I can not test anything because my PCB burns. I have just put in and out with a solder some differents components to see if current is stills so high. I have found that obviously taking out Rsense, short is over and currents gets back to normal. BUT  with Rsense into the PCB again AND M2 out of the PCB, current is still enourmous. I think this is courious. and finnally,last test I did was to put M2 and Rsense in again, and take M1 out. With this, current is normal. SO My guess is that something related to M1 gets the current so high

Any idea?. Sorry for my english.