The Effect of Electron Radiation on the Losses of Power Bipolar Transistor Used in Switching Power Supply
Yan Wang · Dianzi qijian · 2011
The losses of power bipolar transistor are one of the largest parts of the total losses in the switching power supply.We use 10MeV electron irradiation to reduce the turn-off time and the turn-off losses of the power bipolar transistor.In a typical battery charger switching power supply,on the conditon of 85V AC input voltage,the total losses of the power bipolar transistors reduces down to 42%,and the system efficiency is improved by 2.1%.