EMI specifics of synchronous DC-DC buck converters

Li, Zhe; Pommerenke, David

doi:10.1109/isemc.2005.1513616

Cited by 28 publications

(1 citation statement)

References 6 publications

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“…Therefore, some electronic products which use switching power supply cannot meet the requirements because of its bad electromagnetic radiation. How to reduce radiation noise (>50MHz) which caused by switching power supply has introduced by many researches, such as [1][2][3][4]. There are few studies which related to the radiation noise below 30MHz.…”

Section: Introductionmentioning

confidence: 99%

Study on EMI Reduction of DC-DC Buck Converter

Huang

Liu

et al. 2014

AMR

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DC-DC buck converter has been more widely used in automotive electronics because of its advantage of high efficiency and small size. However, it is one of the main causes of the conducted emission and radiation noise. The working principle and the mechanism of DC-DC buck converter which generate conducted emission and radiation noise in different frequency were analyzed. Then, two methods were proposed to reduce the low frequency radiated emission. One is weakening the AC current value of the inductor current through increasing the value of the output inductor, the other is reducing the loop area by adding the output filter, and both of the methods were verified by comparative test. Finally, the two schemes were used in designing the On-board controller, and it passed the radiated emissions (ALSE method) according to the international standard CISPR 25-2008.

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Section: Introductionmentioning

confidence: 99%