Abstract
A common-mode (CM) active filter was designed in a compact package to suppress CM conducted emissions at a switching mode power supply (SMPS). Based on the analytical expressions considering both stability and performance, the design and optimization rules for the proposed active filter have been presented. After verifying its performance by measurements using vector network analysis, the proposed filter was installed in a 200-W SMPS board with 64 and 110 kHz switching frequencies, demonstrating its usefulness by experiments. The performance degradation due to the magnetic saturation and the AEF grounding impedance was also analyzed and investigated.
Original language | English |
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Article number | 7047781 |
Pages (from-to) | 660-671 |
Number of pages | 12 |
Journal | IEEE Transactions on Electromagnetic Compatibility |
Volume | 57 |
Issue number | 4 |
DOIs | |
State | Published - 1 Aug 2015 |
Keywords
- Active EMI filter (AEF)
- active filter
- common mode (CM)
- conducted emission (CE)
- electromagnetic interference (EMI)
- feed forward
- switching mode power supply (SMPS)