why mosfet was heating in dc motor pwm controller i am used 500w, 24v,dc motor, i have used belove circuit what is the problem please help me
Another cause is shoot-through current, caused by the lack of dead time in switching the top and bottom elements in the sides of the H-bridge.I think all of the following have been covered in AAC : Too large gate resistor[Im using 390 Ω,],drive output too high Z,too low voltage,sink or source in sufficient to supply gate capacity,;operating frequency to high;heat sink so small. If you can, monitor the gate waveform,do'nt be surprised if you see triangles inseead of squares.
I hate the small pins on 80 A FETs.
by Aaron Carman
by Duane Benson
by Aaron Carman
by Aaron Carman