Evaluation Method of Flyback Converter Behaviors on Common-Mode Noise
Common-mode (CM) conduction electromagnetic interference (EMI) is a challenge for switched-mode power supply (SMPS) designers. A flyback converter is a traditional topology used in low-power isolated applications. The size and cost of EMI filters are important considerations for higher power density...
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| Format: | Article |
| Language: | English |
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IEEE
2019-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/8656478/ |
| _version_ | 1823925133398507520 |
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| author | Kaining Fu Wei Chen |
| author_facet | Kaining Fu Wei Chen |
| author_sort | Kaining Fu |
| collection | DOAJ |
| description | Common-mode (CM) conduction electromagnetic interference (EMI) is a challenge for switched-mode power supply (SMPS) designers. A flyback converter is a traditional topology used in low-power isolated applications. The size and cost of EMI filters are important considerations for higher power density and lower cost of SMPS design. In most cases, the CM current is generated by voltage pulsation (dv/dt) assigned on the primary winding and the secondary winding. The CM current conduction paths can be mainly categorized into two categories. One is the interwinding parasitic capacitance of the transformer, and the other is the parasitic capacitance between the semiconductor switches and the protective ground. This paper proposed an evaluation method to measure the equivalent CM noise capacitance of the two main CM current conduction paths, respectively. Then, this paper proposed a CM noise cancellation scheme based on the transformer winding design combining the measurement technique and the FEM simulation tool. Planar transformers with PCB windings also have advantages in low profile, good heat dissipation, and good stray parameter consistency. Based on these considerations, an 18-W adapter is designed and tested to verify the effectiveness of the proposed evaluation method and the design scheme. |
| first_indexed | 2024-12-16T20:04:02Z |
| format | Article |
| id | doaj.art-bd4a12bfc6c64268b3653dd5391968d3 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-16T20:04:02Z |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-bd4a12bfc6c64268b3653dd5391968d32022-12-21T22:18:22ZengIEEEIEEE Access2169-35362019-01-017280192803010.1109/ACCESS.2019.29024628656478Evaluation Method of Flyback Converter Behaviors on Common-Mode NoiseKaining Fu0https://orcid.org/0000-0003-1250-0769Wei Chen1College of Electrical Engineering, Fuzhou University, Fuzhou, ChinaCollege of Electrical Engineering, Fuzhou University, Fuzhou, ChinaCommon-mode (CM) conduction electromagnetic interference (EMI) is a challenge for switched-mode power supply (SMPS) designers. A flyback converter is a traditional topology used in low-power isolated applications. The size and cost of EMI filters are important considerations for higher power density and lower cost of SMPS design. In most cases, the CM current is generated by voltage pulsation (dv/dt) assigned on the primary winding and the secondary winding. The CM current conduction paths can be mainly categorized into two categories. One is the interwinding parasitic capacitance of the transformer, and the other is the parasitic capacitance between the semiconductor switches and the protective ground. This paper proposed an evaluation method to measure the equivalent CM noise capacitance of the two main CM current conduction paths, respectively. Then, this paper proposed a CM noise cancellation scheme based on the transformer winding design combining the measurement technique and the FEM simulation tool. Planar transformers with PCB windings also have advantages in low profile, good heat dissipation, and good stray parameter consistency. Based on these considerations, an 18-W adapter is designed and tested to verify the effectiveness of the proposed evaluation method and the design scheme.https://ieeexplore.ieee.org/document/8656478/Common-mode (CM)flybackEMIplanar transformerequivalent capacitance |
| spellingShingle | Kaining Fu Wei Chen Evaluation Method of Flyback Converter Behaviors on Common-Mode Noise IEEE Access Common-mode (CM) flyback EMI planar transformer equivalent capacitance |
| title | Evaluation Method of Flyback Converter Behaviors on Common-Mode Noise |
| title_full | Evaluation Method of Flyback Converter Behaviors on Common-Mode Noise |
| title_fullStr | Evaluation Method of Flyback Converter Behaviors on Common-Mode Noise |
| title_full_unstemmed | Evaluation Method of Flyback Converter Behaviors on Common-Mode Noise |
| title_short | Evaluation Method of Flyback Converter Behaviors on Common-Mode Noise |
| title_sort | evaluation method of flyback converter behaviors on common mode noise |
| topic | Common-mode (CM) flyback EMI planar transformer equivalent capacitance |
| url | https://ieeexplore.ieee.org/document/8656478/ |
| work_keys_str_mv | AT kainingfu evaluationmethodofflybackconverterbehaviorsoncommonmodenoise AT weichen evaluationmethodofflybackconverterbehaviorsoncommonmodenoise |