EP 3114761 A4 20171122 - DEVICE AND METHOD FOR CURRENT SENSING AND POWER SUPPLY MODULATOR USING THE SAME
Title (en)
DEVICE AND METHOD FOR CURRENT SENSING AND POWER SUPPLY MODULATOR USING THE SAME
Title (de)
VORRICHTUNG UND VERFAHREN ZUR STROMMESSUNG UND STROMVERSORGUNGSMODULATOR DAMIT
Title (fr)
DISPOSITIF ET PROCÉDÉ DE DÉTECTION DE COURANT ET MODULATEUR D'ALIMENTATION ÉLECTRIQUE L'UTILISANT
Publication
Application
Priority
CN 2014073046 W 20140307
Abstract (en)
[origin: WO2015131391A1] Embodiments of the invention provide a current sensor. The current sensor comprises: a current sensing element having a first sensing terminal and a second sensing terminal, a first current mirror network CMN cell, a second CMN cell and a third CMN cell. The first CMN cell comprises: a first CMN that has a first high impedance terminal, a first low impedance terminal and a first output terminal, and a first local current mode feedback network LCMFN connected between the first output terminal and the first low impedance terminal. The first CMN cell is DC-coupled to the first sensing terminal of the current sensing element via the first high impedance terminal and operative to generate a first output signal according to the current sensed at the first sensing terminal. The second CMN cell comprises: a second CMN that has a second high impedance terminal, a second low impedance terminal and a second output terminal, and a second LCMFN connected between the second output terminal and the second low impedance terminal. The second CMN cell is DC-coupled to the second sensing terminal of the current sensing element via the second high impedance terminal and operative to generate a second output signal according to the current sensed at the second sensing terminal. The third CMN cell comprises: a third CMN that has a third high impedance terminal, a third low impedance terminal and a third output terminal, and a third LCMFN connected between the third output terminal and the third low impedance terminal. The third CMN cell receives the first output signal and the second output signal via the third high impedance terminal and the third low impedance terminal, respectively and is operative to generate a third output signal according to a combination of the first output signal and the second output signal.
IPC 8 full level
H02M 3/157 (2006.01); H02M 1/00 (2007.01); H03F 1/02 (2006.01); H03F 3/19 (2006.01); H03F 3/24 (2006.01); H03F 3/343 (2006.01)
CPC (source: EP)
H03F 1/0227 (2013.01); H03F 3/19 (2013.01); H03F 3/245 (2013.01); H03F 3/3432 (2013.01); H02M 1/0045 (2021.05); H03F 2200/102 (2013.01); H03F 2200/432 (2013.01); H03F 2200/91 (2013.01)
Citation (search report)
- [X] US 2013271216 A1 20131017 - LIU HENGSHENG [US], et al
- [X] US 2011095818 A1 20110428 - SULLIVAN PATRICK [US]
- [X] US 2011163730 A1 20110707 - ZHANG WENDONG [US], et al
- [X] US 3422366 A 19690114 - SEWELL WESLEY C
- [A] US 8174292 B2 20120508 - NESSI MAURIZIO [IT], et al
- [AD] US 6661217 B2 20031209 - KIMBALL DONALD FELT [US], et al
- [A] US 2002183019 A1 20021205 - DENT PAUL W [US], et al
- [A] JOHAN F WITTE ET AL: "A Current-Feedback Instrumentation Amplifier With 5 Offset for Bidirectional High-Side Current-Sensing", IEEE JOURNAL OF SOLID-STATE CIRCUITS, IEEE SERVICE CENTER, PISCATAWAY, NJ, USA, vol. 43, no. 12, 1 December 2008 (2008-12-01), pages 2769 - 2775, XP011238661, ISSN: 0018-9200, DOI: 10.1109/JSSC.2008.2005695
- See references of WO 2015131391A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2015131391 A1 20150911; EP 3114761 A1 20170111; EP 3114761 A4 20171122
DOCDB simple family (application)
CN 2014073046 W 20140307; EP 14884686 A 20140307