| Presentation | 2012-08-03 High Efficient, Fast Load Tacking, Low EMI Wireless Power Delivery Circuits for Non-contact Memory Card Hiroki Ishikuro, Ryota Shinoda, Kazutoshi Tomita, Yuya Hasegawa, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Watt-class wireless power delivery system for SD card size large volume memory card was developed. Fast load tracking technique is essential because the small size memory card can not contain a battery and the load changes rapidly depending on the operation mode of the memory card. ΔΣ modulated sub-harmonic switching technique was proposed to realize a high efficient and high-speed power control with low electro-magnetic interference (EMI). Test chips were designed and fabricated using 0.18mm-CMOS with high voltage (32V) LDMOS option and power delivery of 0.5W/chip was achieved. The transmitting power was able to be controlled over one order of magnitude while keeping high efficiency. 3.3% load regulation was achieved and reduction of unwanted spurious emission by 8dB was confirmed by the Δ-Σ modulation of control signal of switching frequency. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Wireless power delivery / electromagnetic induction / sub-harmonic / memory card / low EMI / fast load tracking |
| Paper # | SDM2012-84,ICD2012-52 |
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| Conference Information | |
| Committee | ICD |
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| Conference Date | 2012/7/26(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Integrated Circuits and Devices (ICD) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | High Efficient, Fast Load Tacking, Low EMI Wireless Power Delivery Circuits for Non-contact Memory Card |
| Sub Title (in English) | |
| Keyword(1) | Wireless power delivery |
| Keyword(2) | electromagnetic induction |
| Keyword(3) | sub-harmonic |
| Keyword(4) | memory card |
| Keyword(5) | low EMI |
| Keyword(6) | fast load tracking |
| 1st Author's Name | Hiroki Ishikuro |
| 1st Author's Affiliation | Dept. of Electronics and Electrical Engineering, Keio University() |
| 2nd Author's Name | Ryota Shinoda |
| 2nd Author's Affiliation | Dept. of Electronics and Electrical Engineering, Keio University |
| 3rd Author's Name | Kazutoshi Tomita |
| 3rd Author's Affiliation | Dept. of Electronics and Electrical Engineering, Keio University |
| 4th Author's Name | Yuya Hasegawa |
| 4th Author's Affiliation | Dept. of Electronics and Electrical Engineering, Keio University |
| Date | 2012-08-03 |
| Paper # | SDM2012-84,ICD2012-52 |
| Volume (vol) | vol.112 |
| Number (no) | 170 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |