HI, I need to build a 2 H-bridge driver with 4 N-MOSFET to drive a PMDC motor. The motor have rated voltage 24V and rated current 8.5A. So, I choose the IRFP 260 N-MOSFET because it can sustain the current untill 45A in order to protect the MOSFET from over current. But the problems I face now are 1) I don't know how to control or turn on the High side of the H-bridge. The battery I use is 24V. 2) What is the protection circuit to protect the H-bridge, the motor and the the controller which produce the PWM to control the motor speed? As i know, we can use an optocoupler, but how to use it? 3) What others protection do I have to consider in order to protect my controller and the motor? Can someone post a schematic circuit of the H-Bridge driver which is suitable for my project? Thanks.