1. On the Schottky of the secondary output of the switching power supply and a small power fast diode instead of RC absorption, the efficiency can generally be increased by 1~2 points.
2. With the permission of volume and area, try the PQ RM type transformer. If the safety regulations allow, the efficiency of the transformer without the retaining wall can be improved.
3. The electrolytic capacity value of the input and output.
When the AC input rectification electrolytic capacity is low, the efficiency will be 0.2~1 point lower. What is low?
Use an oscilloscope to see the ripple after AC input rectification, less than 10W power, ripple 10~30V is better, and more than 10W ripple is better at 5~20V.
4. The main current loop PCB is as short as possible.
5. Optimize the transformer parameter design to reduce the eddy current loss caused by ringing.
6, reasonable selection of switching devices.
7. Input EMI part optimization design.
8. Choose a highly efficient topology.
9. Choose a good electrolytic capacitor.
10. Start part of the power design.
11, chip-assisted power supply optimization.
everyone enjoys luck , https://www.eeluck.com