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Typical Solutions to Reduce Interference

Most of the DC-DC converters designed in Sunyuan adopts switching mode technology. The circuit itself and internal magnetic components can produce pollution and electromagnetic interference (EMI) by the way of conduction and radiation. The EMI refers to pollution to environment caused by electromagnetic radiation and electromagnetic energy of signal wire and power wire. One thing for sure, the EMI can not be eliminated completely but can be reduced down to a certain safe level for EMC. The effective ways to restrain the EMI are as follows:


1. To use Sunyuan`s metallic shield package products to screen the EMI and radiation or use an external screen cover.

2. Properly connecting to ground

3. Use suitable filter or filtering network. An LC filtering network is recommended as figure 1




Figure 1

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