If you're having trouble generating power with your swing, you might be losing the angle before you make contact with the ball. Here's what you should be doing:
From the top of your backswing, drop your hands rapidly and bring the club down. At the bottom, the club shaft should form nearly a 90° angle with your arm.
You don't want to break your wrist angle early because you'll lose all of the power generated by the swing. Take a few practice swings and work on keeping the angle of your wrist and feeling the transition before you make contact.
Tip courtesy of Ryan Moore, PGA[i]