hi i am working in motor control project where i required to drive mosfet by discreate component like trangister and diode . the mosfets are connected in series i.e sourse of both mosfet is shorted and drain of second one is grounded while drain of first one is 48 v dc. i have drivan second one but facing problem first mosfetr please help.

 

The following link will help you understand:
http://www.allaboutcircuits.com/vol_3/chpt_2/10.html

After reading that youcould post a schematic of what you are doing and the part numbers of the MOSFETs you are using. I am not clear on how you have it hooked up, where is the motor?

 

Sketch a schematic of your circuit and post it here. Maybe be we can help up sort it out.

hgmjr