ul 62368 power adapter loss generally come from where, how to calculate, the next 18 years of power supply manufacturers and everyone to share their insights.
There are three main parts of ul 62368 power adapter loss:
1, the loss of the switching tube; 2, the loss of the switching transformer; 3, the loss of the rectifier diode .
Switching tube loss is mainly: turn-on loss and turn-off loss of two parts.
Switching transformer losses are: hysteresis losses and eddy current losses and copper resistance losses in three parts.
Rectifier diode losses are mainly: forward conduction loss and reverse recovery loss two parts.
Switching tube loss is mainly associated with the on and off time, but also with the operating frequency and load characteristics.
Switching transformer eddy current loss, as well as transformer coil copper resistance loss, and the square of the operating frequency is proportional to the hysteresis loss in addition to the operating frequency is proportional to the flux density is proportional to the 1.6 times.
The forward loss of rectifier diode is related to the voltage drop, and the reverse recovery loss is related to the diode's is related to the diode's recovery time.
