| Presentation | 2021-01-29 Reducing chip area and improving efficiency of a charge pump by switching the input voltage source and controlling the number of stages Shunsuke Hironaga, Takahide Sato, Satomi Ogawa, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A step-up/step-down power supply circuit with a wide input/output voltage range, which has only one switch in its current path, is developed. In this paper, we propose a novel control of a charge pump which is used for an auxiliary power supply of a control circuit for the power supply circuit. The number of stages of the charge pump is reduced by switching the input voltage source when the power supply circuit starts up. In addition, the efficiency of the charge pump is improved by varying the number of stages depending on the input voltage. The efficiency of the charge pump has been confirmed by a simulation. The simulation results show that the efficiency is improved by up to 5.3 %. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Power supply circuit / Charge Pump / Improving efficiency / Reducing chip area |
| Paper # | CAS2020-64,ICTSSL2020-49 |
| Date of Issue | 2021-01-21 (CAS, ICTSSL) |
| Conference Information | |
| Committee | CAS / ICTSSL |
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| Conference Date | 2021/1/28(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Students session, General session |
| Chair | Yasuhiro Takashima(Univ. of Kitakyushu) / Hiroshi Tamura(Chuo Univ.) |
| Vice Chair | Hiroki Sato(Sony LSI Design) / Koichi Gyoda(Shibaura Inst. of Tech.) / Munenari Inoguchi(Toyama Univ.) |
| Secretary | Hiroki Sato(Yamanashi Univ.) / Koichi Gyoda(Sony LSI Design) / Munenari Inoguchi(Synspective) |
| Assistant | Motoi Yamaguchi(TECHNOPRO) / Yohei Nakamura(Hitachi) / Shunichi Yokoyama(NIED) |
| Paper Information | |
| Registration To | Technical Committee on Circuits and Systems / Technical Committee on Information and Communication Technologies for Safe and Secure Life |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Reducing chip area and improving efficiency of a charge pump by switching the input voltage source and controlling the number of stages |
| Sub Title (in English) | |
| Keyword(1) | Power supply circuit |
| Keyword(2) | Charge Pump |
| Keyword(3) | Improving efficiency |
| Keyword(4) | Reducing chip area |
| 1st Author's Name | Shunsuke Hironaga |
| 1st Author's Affiliation | University of Yamanashi(Yamanashi Univ) |
| 2nd Author's Name | Takahide Sato |
| 2nd Author's Affiliation | University of Yamanashi(Yamanashi Univ) |
| 3rd Author's Name | Satomi Ogawa |
| 3rd Author's Affiliation | University of Yamanashi(Yamanashi Univ) |
| Date | 2021-01-29 |
| Paper # | CAS2020-64,ICTSSL2020-49 |
| Volume (vol) | vol.120 |
| Number (no) | CAS-346,ICTSSL-347 |
| Page | pp.pp.130-135(CAS), pp.130-135(ICTSSL), |
| #Pages | 6 |
| Date of Issue | 2021-01-21 (CAS, ICTSSL) |