| Presentation | 2013-07-11 Reducing Common-Mode Noise of Power Converter Using Impedance Balance Method. Atsuhiro TAKAHASHI, Hiroshi TSUKADA, Takashi KOJIMA, Yoshiyuki HATTORI, Tsuyoshi FUNAKI, Osami WADA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This study discusses the generating mechanism of the common-mode voltage in FM-radio band at the input terminal of a step-down converter. The following mechanism was clarified: The common mode voltage is generated by a through-current which flows between a positive power supply line and a negative one when the transistors in the converter are turned on. The voltage depends on the balance of the impedance between both power supply lines. Even though the impedances of these lines are balanced, the balance is lost due to the capacitance C_s formed parasitically between the middle point of transistor-arm and ground. From these results, to reduce the common mode voltage, it is necessary to balance the impedances between both power supply lines, and to make the capacitances of the balance circuit much larger than the C_s. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Power converter / Common-mode current / Impedance balance / Reduction of noise |
| Paper # | EMCJ2013-35 |
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| Conference Information | |
| Committee | EMCJ |
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| Conference Date | 2013/7/4(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Electromagnetic Compatibility (EMCJ) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Reducing Common-Mode Noise of Power Converter Using Impedance Balance Method. |
| Sub Title (in English) | |
| Keyword(1) | Power converter |
| Keyword(2) | Common-mode current |
| Keyword(3) | Impedance balance |
| Keyword(4) | Reduction of noise |
| 1st Author's Name | Atsuhiro TAKAHASHI |
| 1st Author's Affiliation | Toyota Central R&D Labs., Inc.() |
| 2nd Author's Name | Hiroshi TSUKADA |
| 2nd Author's Affiliation | Toyota Central R&D Labs., Inc. |
| 3rd Author's Name | Takashi KOJIMA |
| 3rd Author's Affiliation | Toyota Central R&D Labs., Inc. |
| 4th Author's Name | Yoshiyuki HATTORI |
| 4th Author's Affiliation | Toyota Central R&D Labs., Inc. |
| 5th Author's Name | Tsuyoshi FUNAKI |
| 5th Author's Affiliation | Division of Electrical, Electronic and Information Engineering, Osaka University |
| 6th Author's Name | Osami WADA |
| 6th Author's Affiliation | Department of Electrical Engineering, Kyoto University |
| Date | 2013-07-11 |
| Paper # | EMCJ2013-35 |
| Volume (vol) | vol.113 |
| Number (no) | 122 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |