To get this trophy you will need a powerful Cooldown combo. The cooldown of Logic Bomb is 180 seconds. So you need to make either a 6 or 8 length combo with a mixture of cooldown and chain pressens. I manage to make a combo of well of 240s so it should be easy to make, make sure to put chain pressens further on in the combo for increased potency.
When you have got your combo ready and learned you need to find some strong enemies such as enforcers. It is best if they are alone as other enemies may interrupt your combo. Make sure you have at least 2 focus boosts and use logic bomb on the enemy. Immediately after that you should perform your cooldown combo to reset Logic Bomb once you have done that use Logic bomb again and the trophy will pop.