Startup circuit for bandgap voltage reference generators
Systems and methods to achieve a startup circuit of bandgap voltage reference generator circuits monitoring a current flow in the bandgap voltage reference generator circuit have been achieved. The startup circuit can operate at supply voltages of about one threshold voltage and is therefore appropr...
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Main Authors | , |
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Format | Patent |
Language | English |
Published |
24.07.2012
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Online Access | Get full text |
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Abstract | Systems and methods to achieve a startup circuit of bandgap voltage reference generator circuits monitoring a current flow in the bandgap voltage reference generator circuit have been achieved. The startup circuit can operate at supply voltages of about one threshold voltage and is therefore appropriate for low voltage applications. The monitoring of a current through an electrical component inside the bandgap voltage reference generator circuit by replication the component branch in a scaled version saves power and does not disturb the normal operation of the current-mode bandgap voltage reference generator. The startup circuit invented can be applied for current-mode bandgap voltage reference generator circuits as well as for voltage-mode bandgap voltage reference generator circuits. |
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AbstractList | Systems and methods to achieve a startup circuit of bandgap voltage reference generator circuits monitoring a current flow in the bandgap voltage reference generator circuit have been achieved. The startup circuit can operate at supply voltages of about one threshold voltage and is therefore appropriate for low voltage applications. The monitoring of a current through an electrical component inside the bandgap voltage reference generator circuit by replication the component branch in a scaled version saves power and does not disturb the normal operation of the current-mode bandgap voltage reference generator. The startup circuit invented can be applied for current-mode bandgap voltage reference generator circuits as well as for voltage-mode bandgap voltage reference generator circuits. |
Author | Stellberger, Achim Schwiderski, Frank |
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References | Yu (5867013) 19990200 (2 442 493) 20080400 Cave et al. (5087830) 19920200 Hong (6972550) 20051200 Chen et al. (2008/0018317) 20080100 Kang et al. (6906581) 20050600 European search report, GmbH. Toosky (6084388) 20000700 (09368024.7-1239) 20091100 "A CMOS Bandgap Reference Circuit with Sub-1-V Operation," by H. Banba et al., IEEE Journal of Solid-State Circuits, vol. 34, No. 5, May 1999, pp. 670-673. Kim (2007/0182479) 20070800 Draxelmayr (7911195) 20110300 Aude (6784652) 20040800 Rabeyrin et al. (7323856) 20080100 Jackson (7286002) 20071000 Burstein et al. (6392470) 20020500 |
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