DC Field | Value | Language |
---|---|---|
dc.contributor.author | KO, MINWOO | ko |
dc.contributor.author | HAN, HYUNKI | ko |
dc.contributor.author | Kim, Hyun-Sik | ko |
dc.date.accessioned | 2021-03-19T01:50:12Z | - |
dc.date.available | 2021-03-19T01:50:12Z | - |
dc.date.created | 2021-03-18 | - |
dc.date.created | 2021-03-18 | - |
dc.date.issued | 2021-02-13 | - |
dc.identifier.citation | 2021 IEEE International Solid- State Circuits Conference, ISSCC 2021, pp.270 - + | - |
dc.identifier.issn | 0193-6530 | - |
dc.identifier.uri | http://hdl.handle.net/10203/281694 | - |
dc.description.abstract | The applications of large-area electronics (LAEs) based on thin-film transistors (TFTs) are rapidly expanding from displays to sensors. For the TFT gate drivers, high-voltage bipolar supply rails (approximately ± 15V) are required; so far, they have been typically generated from a battery (V_{BAT}) by employing switched-capacitor converters (SCCs) [1]. Since a high SNR is crucial for TFT-based sensors such as an under-display fingerprint sensor [2], the noise and ripple of the SCC output, which are prone to be coupled to the readout AFE, should be minimized. As a straightforward method, an LDO can be utilized as a post-regulator in series with the SCC. However, the relatively large dropout voltage (V_{DO}) of the LDO significantly degrades the efficiency [3]. In contrast, small VDO reduces LDO loop-gain due to the pass-transistor working in the triode region, resulting in decreased supply-ripple rejection (PSR). From the perspective of SCC, owing to its fixed voltage conversion ratio (VCR), the VDO cannot be finely regulated over a wide variation of VBAT. For fine regulation, the complexity (cost) overhead or the power loss will increase in the SC circuit. In this work, an energy-recycled optimal VDO control (EROC) technique in the SC bipolar step-up stage is proposed for higher efficiency. Also, load-current-reused (LCR) post-regulator is presented to achieve high PSR while extremely minimizing the power loss at the pass-transistor. | - |
dc.language | English | - |
dc.publisher | Institute of Electrical and Electronics Engineers Inc. | - |
dc.title | A 90.5%-Efficiency 28.7µ VRMS-Noise Bipolar-Output High-Step-Up SC DC-DC Converter with Energy-Recycled Regulation and Post-Filtering for ±15V TFT-Based LAE Sensors | - |
dc.type | Conference | - |
dc.identifier.wosid | 000662193600106 | - |
dc.identifier.scopusid | 2-s2.0-85102379950 | - |
dc.type.rims | CONF | - |
dc.citation.beginningpage | 270 | - |
dc.citation.endingpage | + | - |
dc.citation.publicationname | 2021 IEEE International Solid- State Circuits Conference, ISSCC 2021 | - |
dc.identifier.conferencecountry | US | - |
dc.identifier.conferencelocation | Virtual | - |
dc.identifier.doi | 10.1109/isscc42613.2021.9365935 | - |
dc.contributor.localauthor | Kim, Hyun-Sik | - |
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