Power Supply Noise Suppression Method Based on Energy Domain Control

Abstract

Aiming at the implementation of the power supply noise suppression method, a power supply noise suppression method based on energy domain control is proposed in this paper. The power supply noise model based on energy domain control was established on the basis of the electromagnetic field energy model, the differential- mode power supply noise energy model, the common-mode power supply noise energy model, and the total power supply noise energy model. The coupling path of noise was analyzed, and the specific methods of differential-mode noise electromagnetic field intensity control based on resistive coupling path, common-mode noise electromagnetic field intensity control based on capacitive coupling path, and common-mode noise electromagnetic field intensity control based on inductive coupling path are proposed. The experimental results show that the proposed power supply noise suppression method based on energy domain control can effectively suppress the differential-mode noise and common-mode noise of the power supply, and reduce the power supply noise interference.