A Flyback Converter With Novel Active Dissipative Snubber
The active clamp flyback converters (ACF) can provide features of high power density and high power efficiency. However, ACF is usually applied to in the applications of medium-to-high power range. For a low power application, the ACF may not be a cost-efficient choice. The flyback converter with a...
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| Format: | Article |
| Language: | English |
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IEEE
2022-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/9878304/ |
| _version_ | 1811182602686562304 |
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| author | Yeu-Torng Yau Tsung-Liang Hung |
| author_facet | Yeu-Torng Yau Tsung-Liang Hung |
| author_sort | Yeu-Torng Yau |
| collection | DOAJ |
| description | The active clamp flyback converters (ACF) can provide features of high power density and high power efficiency. However, ACF is usually applied to in the applications of medium-to-high power range. For a low power application, the ACF may not be a cost-efficient choice. The flyback converter with a lossless snubber can provide high efficiency for low-power application, but it needs an additional inductor and generates more electromagnetic interference (EMI) emissions. The circuit designers also consider the balance between conversion efficiency, size, and cost. Based on the reasons above, the flyback converter with dissipative RCD snubber is still popular in the applications of low-to-medium power range. When the dissipative snubber is adopted to reduce EMI in the power converters, it increases the loss and hence reduces the efficiency. In this paper, a new concept, called active dissipative snubber, is proposed to suppress the resonance in the discontinuous conduction mode (DCM). In the proposed active dissipative snubber, the digital controller activates the dissipative snubber only when the EMI noise is occurring, then disabled after the noise is decayed or disappears. Digital logic makes the passive snubber smart, which can selectively absorb the EMI noise. Since the proposed snubber is not connected to the main circuit all the time, it can provide lower power loss, but still performs better EMI emissions and maintains conversion efficiency. |
| first_indexed | 2024-04-11T09:34:36Z |
| format | Article |
| id | doaj.art-87955beafcf44dddb023db55deb92deb |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-04-11T09:34:36Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-87955beafcf44dddb023db55deb92deb2022-12-22T04:31:46ZengIEEEIEEE Access2169-35362022-01-011010814510815810.1109/ACCESS.2022.32048729878304A Flyback Converter With Novel Active Dissipative SnubberYeu-Torng Yau0https://orcid.org/0000-0002-7745-716XTsung-Liang Hung1https://orcid.org/0000-0002-9878-6819Department of Ph.D. Program, Prospective Technology of Electrical Engineering and Computer Science, National Chin-Yi University of Technology, Taichung, TaiwanAsian Power Device Inc., Taoyuan, TaiwanThe active clamp flyback converters (ACF) can provide features of high power density and high power efficiency. However, ACF is usually applied to in the applications of medium-to-high power range. For a low power application, the ACF may not be a cost-efficient choice. The flyback converter with a lossless snubber can provide high efficiency for low-power application, but it needs an additional inductor and generates more electromagnetic interference (EMI) emissions. The circuit designers also consider the balance between conversion efficiency, size, and cost. Based on the reasons above, the flyback converter with dissipative RCD snubber is still popular in the applications of low-to-medium power range. When the dissipative snubber is adopted to reduce EMI in the power converters, it increases the loss and hence reduces the efficiency. In this paper, a new concept, called active dissipative snubber, is proposed to suppress the resonance in the discontinuous conduction mode (DCM). In the proposed active dissipative snubber, the digital controller activates the dissipative snubber only when the EMI noise is occurring, then disabled after the noise is decayed or disappears. Digital logic makes the passive snubber smart, which can selectively absorb the EMI noise. Since the proposed snubber is not connected to the main circuit all the time, it can provide lower power loss, but still performs better EMI emissions and maintains conversion efficiency.https://ieeexplore.ieee.org/document/9878304/Dissipative snubberlossless snubberflyback converterEMI |
| spellingShingle | Yeu-Torng Yau Tsung-Liang Hung A Flyback Converter With Novel Active Dissipative Snubber IEEE Access Dissipative snubber lossless snubber flyback converter EMI |
| title | A Flyback Converter With Novel Active Dissipative Snubber |
| title_full | A Flyback Converter With Novel Active Dissipative Snubber |
| title_fullStr | A Flyback Converter With Novel Active Dissipative Snubber |
| title_full_unstemmed | A Flyback Converter With Novel Active Dissipative Snubber |
| title_short | A Flyback Converter With Novel Active Dissipative Snubber |
| title_sort | flyback converter with novel active dissipative snubber |
| topic | Dissipative snubber lossless snubber flyback converter EMI |
| url | https://ieeexplore.ieee.org/document/9878304/ |
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