Problems with TAS5615

[NewUs]

Hi everybody,
I am trying to design a prototype with the TAS5615 amplifier following the evaluation board but, I don't know what I have done wrong, because the amplifier get damage after 5-6 times I turn off the reset.
I attached the schematich of the board and the layout of the 2 sided PCB.
-I use a load of 11ohm which needs 100W. Please, confirm me that I can use it with this amplifier, maybe the reason of my problems is the load.
-PBTL configuration
-The input signal is a PWM generated with a microcontroller
-Power supply is the LTC3862EFE-1 from Linear, configured to obtain 45V, 4A. (Another possible reason of the failure)
The starting secuence I use is:
-Turn on the 45V power supply, but this supply don't feed the amplifier yet (there is a relay)
-Turn on the 12V and the relay (now the amplifier have both powers)
-Turn on the input signal
-Turn off the reset
The amplifier sounds, but after 5-6 times to turn on-turn off the reset, the SD pin is permanently on, and one of the outputs makes a shortcircuit with GND.

Thank you in advance for the help