1. The capacitor of the bypass chip capacitor can not be too large, and its parasitic series induction is as small as possible, and multiple capacitors in parallel can improve the impedance characteristics of the capacitor.
2. The parasitic shunt capacitance of the inductor should be as small as possible, and the distance between the inductor pin pads should be as far as possible.
3. Avoid placing any power or signal wiring on the formation.
4. The area of the high frequency loop should be as small as possible.
5. Placing through the hole should not destroy the path of high-frequency current on the formation.
6. A small circuit on the system board needs different ground, and the ground of small circuit is connected with the ground of power supply through a single point.
7. the control chip to the upper and lower end of the field effect tube drive circuit loop should be as short as possible.
8. Switching power supply power circuit and control signal circuit components need to be connected to the small same ground, the two ground are generally connected through a single point.
