Switching power converters have the advantages of small size, light weight, DC input suitability etc, and provide more flexible power output than traditional converters of transformer type. Utilizing the layout separation of high and low frequency signal and proper decoupling capacitor circuit to effectively isolate the high frequency switching circuit noise. Furthermore, the spread spectrum frequency modulation (SSFM) circuit can be added to disperse the electromagnetic energy to suppress the interference of switching power converter and achieve the EMC requirements.

1.Scope of applications:Switching noise from switching power converters
2.Efficiency: SSFM technology will lead to 5-20dBinterferencesuppression.

Automotive multimedia, navigation, and telematics systems

This technique will help automotive customers to build EMC design and debug capabilities, reduce the development costs, shorten the verification schedule and enhance the product competitiveness.