Fast transient response high-accuracy current-sensing technique for step-up DC–DC converter
A novel current-sensing technique with fast transient and high accuracy for a step-up DC–DC converter is presented. This circuitry is applied for sensing the current flowing through the equivalent series resistor (ESR) of the inductor to obtain the inductor current information. It is achieved with a...
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| Veröffentlicht in: | Electronics letters 2015-04, Vol.51 (7), p.577-579 |
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| container_title | Electronics letters |
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| creator | Chi, Yuan Lai, Xin-Quan Du, Han-Xiao |
| description | A novel current-sensing technique with fast transient and high accuracy for a step-up DC–DC converter is presented. This circuitry is applied for sensing the current flowing through the equivalent series resistor (ESR) of the inductor to obtain the inductor current information. It is achieved with a fast transient response circuit (FTRC), an operational amplifier, a current-sensing stage and an overshoot current protection circuit. The process offsets of the transistors, which can increase the current-sensing accuracy, and provide an additional current feedback loop to decrease the transient response time are compensated by the FTRC. When the sensed current is higher than the maximum value, the overcurrent protection (OCP) will be operating to let it shut down. This current-sensing technique has been integrated in a step-up DC–DC converter with standard 0.35 μm CMOS process. Experimental results show that the accuracy is higher than 98% and the transient response recovery time is ∼100 μs with load current changing from 3 A to 10 mA. |
| doi_str_mv | 10.1049/el.2014.4102 |
| format | Article |
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This circuitry is applied for sensing the current flowing through the equivalent series resistor (ESR) of the inductor to obtain the inductor current information. It is achieved with a fast transient response circuit (FTRC), an operational amplifier, a current-sensing stage and an overshoot current protection circuit. The process offsets of the transistors, which can increase the current-sensing accuracy, and provide an additional current feedback loop to decrease the transient response time are compensated by the FTRC. When the sensed current is higher than the maximum value, the overcurrent protection (OCP) will be operating to let it shut down. This current-sensing technique has been integrated in a step-up DC–DC converter with standard 0.35 μm CMOS process. Experimental results show that the accuracy is higher than 98% and the transient response recovery time is ∼100 μs with load current changing from 3 A to 10 mA.</description><identifier>ISSN: 0013-5194</identifier><identifier>ISSN: 1350-911X</identifier><identifier>EISSN: 1350-911X</identifier><identifier>DOI: 10.1049/el.2014.4102</identifier><language>eng</language><publisher>The Institution of Engineering and Technology</publisher><subject>CMOS integrated circuits ; CMOS process ; current feedback loop ; current‐sensing stage ; DC to DC ; DC‐DC power convertors ; Electric circuits ; Electric converters ; equivalent series resistor ; ESR ; fast transient response circuit ; FTRC ; high‐accuracy current‐sensing technique ; inductor current information ; Inductors ; operational amplifier ; Operational amplifiers ; Overcurrent ; overcurrent protection ; over‐shoot current protection circuit ; Power electronics, energy conversion and sustainability ; step‐up DC–DC converter ; transient response ; transient response recovery time ; Transient responses</subject><ispartof>Electronics letters, 2015-04, Vol.51 (7), p.577-579</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-c3765-42bade753e2ad725ee005307430a9fa90598f939d8c73d23811552790c04178f3</citedby><cites>FETCH-LOGICAL-c3765-42bade753e2ad725ee005307430a9fa90598f939d8c73d23811552790c04178f3</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.2014.4102$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1049%2Fel.2014.4102$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,11562,27924,27925,45574,45575,46052,46476</link.rule.ids><linktorsrc>$$Uhttps://onlinelibrary.wiley.com/doi/abs/10.1049%2Fel.2014.4102$$EView_record_in_Wiley-Blackwell$$FView_record_in_$$GWiley-Blackwell</linktorsrc></links><search><creatorcontrib>Chi, Yuan</creatorcontrib><creatorcontrib>Lai, Xin-Quan</creatorcontrib><creatorcontrib>Du, Han-Xiao</creatorcontrib><title>Fast transient response high-accuracy current-sensing technique for step-up DC–DC converter</title><title>Electronics letters</title><description>A novel current-sensing technique with fast transient and high accuracy for a step-up DC–DC converter is presented. This circuitry is applied for sensing the current flowing through the equivalent series resistor (ESR) of the inductor to obtain the inductor current information. It is achieved with a fast transient response circuit (FTRC), an operational amplifier, a current-sensing stage and an overshoot current protection circuit. The process offsets of the transistors, which can increase the current-sensing accuracy, and provide an additional current feedback loop to decrease the transient response time are compensated by the FTRC. When the sensed current is higher than the maximum value, the overcurrent protection (OCP) will be operating to let it shut down. This current-sensing technique has been integrated in a step-up DC–DC converter with standard 0.35 μm CMOS process. Experimental results show that the accuracy is higher than 98% and the transient response recovery time is ∼100 μs with load current changing from 3 A to 10 mA.</description><subject>CMOS integrated circuits</subject><subject>CMOS process</subject><subject>current feedback loop</subject><subject>current‐sensing stage</subject><subject>DC to DC</subject><subject>DC‐DC power convertors</subject><subject>Electric circuits</subject><subject>Electric converters</subject><subject>equivalent series resistor</subject><subject>ESR</subject><subject>fast transient response circuit</subject><subject>FTRC</subject><subject>high‐accuracy current‐sensing technique</subject><subject>inductor current information</subject><subject>Inductors</subject><subject>operational amplifier</subject><subject>Operational amplifiers</subject><subject>Overcurrent</subject><subject>overcurrent protection</subject><subject>over‐shoot current protection circuit</subject><subject>Power electronics, energy conversion and sustainability</subject><subject>step‐up DC–DC converter</subject><subject>transient response</subject><subject>transient response recovery time</subject><subject>Transient responses</subject><issn>0013-5194</issn><issn>1350-911X</issn><issn>1350-911X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNp90LtOwzAUBmALgURVuvEAHhgYSPG1rkfoBZAqsYDEgizXOWmD0iTYCagb78Ab8iS4CkORENMZ_B3rPz9Cp5QMKRH6EoohI1QMBSXsAPUolyTRlD4doh4hlCeSanGMBiHky8ioGBFBe-h5bkODG2_LkEPZYA-hrsoAeJ2v1ol1rvXWbXEcPj4nAaIrV7gBty7z1xZwVnkcGqiTtsbTydfH53SCXVW-gW_An6CjzBYBBj-zjx7ns4fJbbK4v7mbXC0Sx9VIJoItbQpKcmA2VUwCECI5UYITqzOridTjTHOdjp3iKeNjSqVkShMXb1DjjPfRefdv7asYKjRmkwcHRWFLqNpgqNKcjaSiItKLjjpfheAhM7XPN9ZvDSVmV6SBwuyKNLsiI5cdf88L2P5rzWyxYNdzwoSQce-s28uhMS9V68t4fxR7vE73gv9ifyb5BsRsjpE</recordid><startdate>20150402</startdate><enddate>20150402</enddate><creator>Chi, Yuan</creator><creator>Lai, Xin-Quan</creator><creator>Du, Han-Xiao</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>20150402</creationdate><title>Fast transient response high-accuracy current-sensing technique for step-up DC–DC converter</title><author>Chi, Yuan ; Lai, Xin-Quan ; Du, Han-Xiao</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3765-42bade753e2ad725ee005307430a9fa90598f939d8c73d23811552790c04178f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>CMOS integrated circuits</topic><topic>CMOS process</topic><topic>current feedback loop</topic><topic>current‐sensing stage</topic><topic>DC to DC</topic><topic>DC‐DC power convertors</topic><topic>Electric circuits</topic><topic>Electric converters</topic><topic>equivalent series resistor</topic><topic>ESR</topic><topic>fast transient response circuit</topic><topic>FTRC</topic><topic>high‐accuracy current‐sensing technique</topic><topic>inductor current information</topic><topic>Inductors</topic><topic>operational amplifier</topic><topic>Operational amplifiers</topic><topic>Overcurrent</topic><topic>overcurrent protection</topic><topic>over‐shoot current protection circuit</topic><topic>Power electronics, energy conversion and sustainability</topic><topic>step‐up DC–DC converter</topic><topic>transient response</topic><topic>transient response recovery time</topic><topic>Transient responses</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chi, Yuan</creatorcontrib><creatorcontrib>Lai, Xin-Quan</creatorcontrib><creatorcontrib>Du, Han-Xiao</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>Chi, Yuan</au><au>Lai, Xin-Quan</au><au>Du, Han-Xiao</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Fast transient response high-accuracy current-sensing technique for step-up DC–DC converter</atitle><jtitle>Electronics letters</jtitle><date>2015-04-02</date><risdate>2015</risdate><volume>51</volume><issue>7</issue><spage>577</spage><epage>579</epage><pages>577-579</pages><issn>0013-5194</issn><issn>1350-911X</issn><eissn>1350-911X</eissn><abstract>A novel current-sensing technique with fast transient and high accuracy for a step-up DC–DC converter is presented. This circuitry is applied for sensing the current flowing through the equivalent series resistor (ESR) of the inductor to obtain the inductor current information. It is achieved with a fast transient response circuit (FTRC), an operational amplifier, a current-sensing stage and an overshoot current protection circuit. The process offsets of the transistors, which can increase the current-sensing accuracy, and provide an additional current feedback loop to decrease the transient response time are compensated by the FTRC. When the sensed current is higher than the maximum value, the overcurrent protection (OCP) will be operating to let it shut down. This current-sensing technique has been integrated in a step-up DC–DC converter with standard 0.35 μm CMOS process. Experimental results show that the accuracy is higher than 98% and the transient response recovery time is ∼100 μs with load current changing from 3 A to 10 mA.</abstract><pub>The Institution of Engineering and Technology</pub><doi>10.1049/el.2014.4102</doi><tpages>3</tpages></addata></record> |
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| ispartof | Electronics letters, 2015-04, Vol.51 (7), p.577-579 |
| issn | 0013-5194 1350-911X 1350-911X |
| language | eng |
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| source | Wiley Online Library Open Access |
| subjects | CMOS integrated circuits CMOS process current feedback loop current‐sensing stage DC to DC DC‐DC power convertors Electric circuits Electric converters equivalent series resistor ESR fast transient response circuit FTRC high‐accuracy current‐sensing technique inductor current information Inductors operational amplifier Operational amplifiers Overcurrent overcurrent protection over‐shoot current protection circuit Power electronics, energy conversion and sustainability step‐up DC–DC converter transient response transient response recovery time Transient responses |
| title | Fast transient response high-accuracy current-sensing technique for step-up DC–DC converter |
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