Highly accurate and power-efficient battery charger with charging current compensator for wearable devices
Highly accurate and power-efficient hybrid battery charger is proposed which includes the switching and linear chargers as well as a charging current compensator. The proposed current compensator operates the switching charger in the constant current (CC) mode to achieve high power efficiency and to...
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| Veröffentlicht in: | Electronics letters 2017-03, Vol.53 (7), p.461-463 |
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| container_end_page | 463 |
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| container_title | Electronics letters |
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| creator | Jung, Y.-H Hong, S.-K Kwon, O.-K |
| description | Highly accurate and power-efficient hybrid battery charger is proposed which includes the switching and linear chargers as well as a charging current compensator. The proposed current compensator operates the switching charger in the constant current (CC) mode to achieve high power efficiency and to improve the charging current accuracy with a small-sized inductor. It also operates the linear charger to minimise the charging current variation in the trickle current (TC) mode and to reduce the battery charging voltage error in the constant voltage (CV) mode. The proposed battery charger was fabricated using a 0.18 μm CMOS process and occupies a chip area of 1.63 mm2. The measurement results show that the proposed battery charger achieves a charging current accuracy of 96.2% in the CC mode, which is improved by 15.8% at a target current of 500 mA, as well as a power dissipation of 0.26 W. In addition, the charging current variation and charging voltage error are measured to be |
| doi_str_mv | 10.1049/el.2017.0388 |
| format | Article |
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The proposed current compensator operates the switching charger in the constant current (CC) mode to achieve high power efficiency and to improve the charging current accuracy with a small-sized inductor. It also operates the linear charger to minimise the charging current variation in the trickle current (TC) mode and to reduce the battery charging voltage error in the constant voltage (CV) mode. The proposed battery charger was fabricated using a 0.18 μm CMOS process and occupies a chip area of 1.63 mm2. The measurement results show that the proposed battery charger achieves a charging current accuracy of 96.2% in the CC mode, which is improved by 15.8% at a target current of 500 mA, as well as a power dissipation of 0.26 W. In addition, the charging current variation and charging voltage error are measured to be <2 mAP−P in the TC mode and 0.48% in the CV mode.</description><identifier>ISSN: 0013-5194</identifier><identifier>ISSN: 1350-911X</identifier><identifier>EISSN: 1350-911X</identifier><identifier>DOI: 10.1049/el.2017.0388</identifier><language>eng</language><publisher>The Institution of Engineering and Technology</publisher><subject>Battery chargers ; battery charging voltage error ; CC mode ; Charging ; charging current compensator ; charging current variation ; Circuits and systems ; CMOS ; Compensators ; constant current mode ; constant voltage mode ; CV mode ; Electric potential ; energy conservation ; Errors ; linear charger ; linear chargers ; power‐efficient battery charger ; secondary cells ; Switching ; switching charger ; TC mode ; trickle current mode ; Voltage ; wearable devices</subject><ispartof>Electronics letters, 2017-03, Vol.53 (7), p.461-463</ispartof><rights>The Institution of Engineering and Technology</rights><rights>2020 The Institution of Engineering and Technology</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3765-8776bd9765a6004ac0bd4893cab233916605cf8b40eea004651c7906594ae3413</citedby><cites>FETCH-LOGICAL-c3765-8776bd9765a6004ac0bd4893cab233916605cf8b40eea004651c7906594ae3413</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1049%2Fel.2017.0388$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1049%2Fel.2017.0388$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,11542,27903,27904,45553,45554,46031,46455</link.rule.ids><linktorsrc>$$Uhttps://onlinelibrary.wiley.com/doi/abs/10.1049%2Fel.2017.0388$$EView_record_in_Wiley-Blackwell$$FView_record_in_$$GWiley-Blackwell</linktorsrc></links><search><creatorcontrib>Jung, Y.-H</creatorcontrib><creatorcontrib>Hong, S.-K</creatorcontrib><creatorcontrib>Kwon, O.-K</creatorcontrib><title>Highly accurate and power-efficient battery charger with charging current compensator for wearable devices</title><title>Electronics letters</title><description>Highly accurate and power-efficient hybrid battery charger is proposed which includes the switching and linear chargers as well as a charging current compensator. The proposed current compensator operates the switching charger in the constant current (CC) mode to achieve high power efficiency and to improve the charging current accuracy with a small-sized inductor. It also operates the linear charger to minimise the charging current variation in the trickle current (TC) mode and to reduce the battery charging voltage error in the constant voltage (CV) mode. The proposed battery charger was fabricated using a 0.18 μm CMOS process and occupies a chip area of 1.63 mm2. The measurement results show that the proposed battery charger achieves a charging current accuracy of 96.2% in the CC mode, which is improved by 15.8% at a target current of 500 mA, as well as a power dissipation of 0.26 W. In addition, the charging current variation and charging voltage error are measured to be <2 mAP−P in the TC mode and 0.48% in the CV mode.</description><subject>Battery chargers</subject><subject>battery charging voltage error</subject><subject>CC mode</subject><subject>Charging</subject><subject>charging current compensator</subject><subject>charging current variation</subject><subject>Circuits and systems</subject><subject>CMOS</subject><subject>Compensators</subject><subject>constant current mode</subject><subject>constant voltage mode</subject><subject>CV mode</subject><subject>Electric potential</subject><subject>energy conservation</subject><subject>Errors</subject><subject>linear charger</subject><subject>linear chargers</subject><subject>power‐efficient battery charger</subject><subject>secondary cells</subject><subject>Switching</subject><subject>switching charger</subject><subject>TC mode</subject><subject>trickle current mode</subject><subject>Voltage</subject><subject>wearable devices</subject><issn>0013-5194</issn><issn>1350-911X</issn><issn>1350-911X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNp9kMFLwzAUxoMoOHQ3_4AcPHiwM2nStDnq2JxQ8KLgLaTp65bRtTXpHPvvTamggnh4vPfg9z2-9yF0RcmMEi7voJ7FhKYzwrLsBE0oS0gkKX07RRNCKIsSKvk5mnpvC0I55YJwOkHblV1v6iPWxuyd7gHrpsRdewAXQVVZY6HpcaH7HtwRm412a3D4YPvNuNhmjYPQDZRpdx00Xvetw1WoA2inixpwCR_WgL9EZ5WuPUy_-gV6XS5e5qsof358mt_nkWGpSKIsTUVRyjBqQQjXhhQlzyQzuogZk1QIkpgqKzgB0AEQCTWpJCKRXAPjlF2gm_Fu59r3Pfhe7aw3UNe6gXbvFQ3HMpnGsQjo7Yga13rvoFKdszvtjooSNaSqoFZDqmpINeDJiB9sDcd_WbXI8_hhGexlSdBdjzoLvdq2e9eE_wPxA-_K6tv4L-xPJ59T35OM</recordid><startdate>20170330</startdate><enddate>20170330</enddate><creator>Jung, Y.-H</creator><creator>Hong, S.-K</creator><creator>Kwon, O.-K</creator><general>The Institution of Engineering and Technology</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>8FD</scope><scope>F28</scope><scope>FR3</scope><scope>L7M</scope></search><sort><creationdate>20170330</creationdate><title>Highly accurate and power-efficient battery charger with charging current compensator for wearable devices</title><author>Jung, Y.-H ; Hong, S.-K ; Kwon, O.-K</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3765-8776bd9765a6004ac0bd4893cab233916605cf8b40eea004651c7906594ae3413</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Battery chargers</topic><topic>battery charging voltage error</topic><topic>CC mode</topic><topic>Charging</topic><topic>charging current compensator</topic><topic>charging current variation</topic><topic>Circuits and systems</topic><topic>CMOS</topic><topic>Compensators</topic><topic>constant current mode</topic><topic>constant voltage mode</topic><topic>CV mode</topic><topic>Electric potential</topic><topic>energy conservation</topic><topic>Errors</topic><topic>linear charger</topic><topic>linear chargers</topic><topic>power‐efficient battery charger</topic><topic>secondary cells</topic><topic>Switching</topic><topic>switching charger</topic><topic>TC mode</topic><topic>trickle current mode</topic><topic>Voltage</topic><topic>wearable devices</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Jung, Y.-H</creatorcontrib><creatorcontrib>Hong, S.-K</creatorcontrib><creatorcontrib>Kwon, O.-K</creatorcontrib><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Technology Research Database</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Electronics letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Jung, Y.-H</au><au>Hong, S.-K</au><au>Kwon, O.-K</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Highly accurate and power-efficient battery charger with charging current compensator for wearable devices</atitle><jtitle>Electronics letters</jtitle><date>2017-03-30</date><risdate>2017</risdate><volume>53</volume><issue>7</issue><spage>461</spage><epage>463</epage><pages>461-463</pages><issn>0013-5194</issn><issn>1350-911X</issn><eissn>1350-911X</eissn><abstract>Highly accurate and power-efficient hybrid battery charger is proposed which includes the switching and linear chargers as well as a charging current compensator. The proposed current compensator operates the switching charger in the constant current (CC) mode to achieve high power efficiency and to improve the charging current accuracy with a small-sized inductor. It also operates the linear charger to minimise the charging current variation in the trickle current (TC) mode and to reduce the battery charging voltage error in the constant voltage (CV) mode. The proposed battery charger was fabricated using a 0.18 μm CMOS process and occupies a chip area of 1.63 mm2. The measurement results show that the proposed battery charger achieves a charging current accuracy of 96.2% in the CC mode, which is improved by 15.8% at a target current of 500 mA, as well as a power dissipation of 0.26 W. In addition, the charging current variation and charging voltage error are measured to be <2 mAP−P in the TC mode and 0.48% in the CV mode.</abstract><pub>The Institution of Engineering and Technology</pub><doi>10.1049/el.2017.0388</doi><tpages>3</tpages></addata></record> |
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| identifier | ISSN: 0013-5194 |
| ispartof | Electronics letters, 2017-03, Vol.53 (7), p.461-463 |
| issn | 0013-5194 1350-911X 1350-911X |
| language | eng |
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| source | Wiley-Blackwell Open Access Titles |
| subjects | Battery chargers battery charging voltage error CC mode Charging charging current compensator charging current variation Circuits and systems CMOS Compensators constant current mode constant voltage mode CV mode Electric potential energy conservation Errors linear charger linear chargers power‐efficient battery charger secondary cells Switching switching charger TC mode trickle current mode Voltage wearable devices |
| title | Highly accurate and power-efficient battery charger with charging current compensator for wearable devices |
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