Analysis and Design of Damping Resistor for Mitigating Surge Voltage and Oscillation in Flyback Converter
An analytical method is presented for designing damping resistance to minimize surge voltage in a flyback converter with a dissipative snubber. It is based on given snubber capacitance and resistance. Flyback converters have an inherent issue with unwanted surge voltage at the main FET due to leakag...
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IEEE
2024-01-01
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| author | Sunggyu Jin Jongwon Choi |
| author_facet | Sunggyu Jin Jongwon Choi |
| author_sort | Sunggyu Jin |
| collection | DOAJ |
| description | An analytical method is presented for designing damping resistance to minimize surge voltage in a flyback converter with a dissipative snubber. It is based on given snubber capacitance and resistance. Flyback converters have an inherent issue with unwanted surge voltage at the main FET due to leakage inductance of the transformer. To handle it, a dissipative snubber has been widely used for mitigating the surge voltage and it can be efficiently adjusted according to the parameters of the R-RCD snubber. To derive a damping resistance with minimum surge voltage, an equivalent circuit was developed to address RCD snubber with a damping resistor, and the drain-source voltage response was obtained. Furthermore, the snubber loss during the discharge interval in the snubber capacitor was calculated. The analysis involved examining the relationship between the surge voltage at the drain-source voltage and the loss during discharge. Using the trade-off relationships, a new cost function was proposed to balance its surge voltage and efficiency. The optimal damping resistance and snubber capacitance were obtained based on the cost function. The analysis is demonstrated by experimental results using a 54W prototype flyback converter. |
| format | Article |
| id | doaj-art-7efd5b9dd5d64a4ba28cf9eaa2183433 |
| institution | DOAJ |
| issn | 2169-3536 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IEEE |
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| spelling | doaj-art-7efd5b9dd5d64a4ba28cf9eaa21834332025-08-20T02:59:49ZengIEEEIEEE Access2169-35362024-01-011216367116368110.1109/ACCESS.2024.345819110676974Analysis and Design of Damping Resistor for Mitigating Surge Voltage and Oscillation in Flyback ConverterSunggyu Jin0Jongwon Choi1https://orcid.org/0000-0003-3717-2490Department of Electrical and Electronic Engineering, Hannam University, Daedeok-Gu, Deajeon, Republic of KoreaDepartment of Electrical and Electronic Engineering, Hannam University, Daedeok-Gu, Deajeon, Republic of KoreaAn analytical method is presented for designing damping resistance to minimize surge voltage in a flyback converter with a dissipative snubber. It is based on given snubber capacitance and resistance. Flyback converters have an inherent issue with unwanted surge voltage at the main FET due to leakage inductance of the transformer. To handle it, a dissipative snubber has been widely used for mitigating the surge voltage and it can be efficiently adjusted according to the parameters of the R-RCD snubber. To derive a damping resistance with minimum surge voltage, an equivalent circuit was developed to address RCD snubber with a damping resistor, and the drain-source voltage response was obtained. Furthermore, the snubber loss during the discharge interval in the snubber capacitor was calculated. The analysis involved examining the relationship between the surge voltage at the drain-source voltage and the loss during discharge. Using the trade-off relationships, a new cost function was proposed to balance its surge voltage and efficiency. The optimal damping resistance and snubber capacitance were obtained based on the cost function. The analysis is demonstrated by experimental results using a 54W prototype flyback converter.https://ieeexplore.ieee.org/document/10676974/Cost functiondissipative snubberoptimalRCDresonancesurge voltage |
| spellingShingle | Sunggyu Jin Jongwon Choi Analysis and Design of Damping Resistor for Mitigating Surge Voltage and Oscillation in Flyback Converter IEEE Access Cost function dissipative snubber optimal RCD resonance surge voltage |
| title | Analysis and Design of Damping Resistor for Mitigating Surge Voltage and Oscillation in Flyback Converter |
| title_full | Analysis and Design of Damping Resistor for Mitigating Surge Voltage and Oscillation in Flyback Converter |
| title_fullStr | Analysis and Design of Damping Resistor for Mitigating Surge Voltage and Oscillation in Flyback Converter |
| title_full_unstemmed | Analysis and Design of Damping Resistor for Mitigating Surge Voltage and Oscillation in Flyback Converter |
| title_short | Analysis and Design of Damping Resistor for Mitigating Surge Voltage and Oscillation in Flyback Converter |
| title_sort | analysis and design of damping resistor for mitigating surge voltage and oscillation in flyback converter |
| topic | Cost function dissipative snubber optimal RCD resonance surge voltage |
| url | https://ieeexplore.ieee.org/document/10676974/ |
| work_keys_str_mv | AT sunggyujin analysisanddesignofdampingresistorformitigatingsurgevoltageandoscillationinflybackconverter AT jongwonchoi analysisanddesignofdampingresistorformitigatingsurgevoltageandoscillationinflybackconverter |