Adding Snubber Circuit to Design


Thread Starter


To those who have worked on avoiding EMI in designs, have you used a snubber circuit across a rectifier and bridge inverter diode?

What did you use? Was it helpful?
A snubber circuit can be used across a rectifier and bridge inverter diode to reduce electromagnetic interference (EMI) in a design. A snubber circuit typically consists of a series combination of a capacitor and a resistor, which are placed parallel to the diode. The snubber circuit helps to suppress high-frequency switching transients that can cause EMI.

In my experience, snubber circuits have helped reduce EMI in designs. The specific values of the resistor and capacitor in the snubber circuit depend on the particular application and the switching frequency of the circuit. Therefore, it is crucial to choose the correct values for the components to achieve the desired level of EMI suppression.

It is also worth mentioning that a snubber circuit is not the only way to suppress EMI. Other methods, such as using ferrite beads, shielding, differential signaling, or a combination of these methods, may also be used depending on the specific design and requirements.
Snubber circuits can be highly effective in reducing EMI in power electronic circuits. However, it is important to design the snubber circuit carefully to ensure that it does not cause other problems, such as reducing the efficiency of the system or increasing the switching losses. Additionally, the snubber circuit should be optimized for the specific operating conditions of the system,