Electromagnetic Differential Mode Disturbance and Common Mode Disturbance of AC/DC Switching Power Supply

浏览次数：300 发布日期：2023-09-15

AC/DC power supply is a necessary functional module in all AC powered devices. Here, we will analyze how it generates differential mode electromagnetic interference. If there are designers specializing in power supply, they can refer to other more detailed information.

The AC/DC module mainly consists of two parts of circuits, one is the rectifier circuit, and the other is the DC chopper part.

The rectifier circuit converts AC voltage into DC voltage, and the DC chopping circuit chops DC voltage into pulse voltage. By adjusting the pulse width of the pulse voltage, the effective value of the output voltage is controlled.