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DC Field | Value | Language |
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dc.citation.endPage | 2401 | - |
dc.citation.number | 8 | - |
dc.citation.startPage | 2388 | - |
dc.citation.title | IEEE Journal of Solid-State Circuits | - |
dc.citation.volume | 56 | - |
dc.contributor.author | Hong, Woojin | - |
dc.contributor.author | Lee, Myunghee | - |
dc.date.accessioned | 2023-12-21T15:37:37Z | - |
dc.date.available | 2023-12-21T15:37:37Z | - |
dc.date.created | 2021-01-11 | - |
dc.date.issued | 2021-08 | - |
dc.description.abstract | In this article, a dual-ramp modulation scheme is proposed to solve an instability during the discontinuous conduction mode (DCM) operation of current-mode constant on-time (COT) controlled boost converters. A duty cycle-dependent auxiliary waveform, which is generated by the proposed capacitor-coupled common-drain amplifier (CCCDA), is summed with an inductor current information to form a current feedback loop. With the proposed scheme, the pulse frequency modulation (PFM) operation can be spontaneously accompanied by the current-mode COT control to enhance a light-load efficiency. In addition, a translinear loop (TLL)-based valley current sensor is introduced to sense a valley inductor current while solving the response time and stability problems of the previous SenseFET-based current sensor. An adaptive ON-time (AOT) generator provides a quasi-fixed switching frequency in the CCM operation regardless of the conversion ratio. The proposed boost converter has been fabricated using a 0.18- μm CMOS process with a total chip area of 1.23 mm × 1.37 mm. It achieves a peak efficiency of 94.5% even at a high-switching frequency of 10 MHz, and smooth mode transition between PFM and pulsewidth modulation (PWM) operations depending on the load conditions. | - |
dc.identifier.bibliographicCitation | IEEE Journal of Solid-State Circuits, v.56, no.8, pp.2388 - 2401 | - |
dc.identifier.doi | 10.1109/JSSC.2020.3047000 | - |
dc.identifier.issn | 0018-9200 | - |
dc.identifier.scopusid | 2-s2.0-85099594833 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/49485 | - |
dc.identifier.url | https://ieeexplore.ieee.org/document/9318991 | - |
dc.identifier.wosid | 000678340400008 | - |
dc.language | 영어 | - |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | - |
dc.title | A 10-MHz Current-Mode AOT Boost Converter With Dual-Ramp Modulation Scheme and Translinear Loop-Based Current Sensor for WiFi IoT Applications | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Engineering, Electrical & Electronic | - |
dc.relation.journalResearchArea | Engineering | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Adaptive ON-time (AOT) generatorcurrent-mode constant ON-time (COT) controldc-dc boost converterdiscontinuous conduction mode (DCM)dual-ramp modulation schemetranslinear loop (TLL)-based current sensor | - |
dc.subject.keywordPlus | DC BUCK CONVERTEREFFICIENCY-ENHANCEMENTTIME CONTROLFREQUENCYPEAKACCURACYSPEEDNOISE | - |
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