MOSFETS A and B (full bridge section) are heating up rapidly while testing for long duration. For light loads there is a temperature difference of at least 10degrees C between (A,B) and (C,D) Furthuer for heavy loads these MOSFETS rises very rapidly and the temparature difference rises to almost 50 degrees. So we are not able to do the testings. We have given sufficient cooling using heat sink for these MOSFETs.
If these MOSFETS were rising at equal rate it was not cooncerning me. What could be the reason?
