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A Power Management Unit With 40 dB Switching-Noise-Suppression for a Thermal Harvesting Array.

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Title: A Power Management Unit With 40 dB Switching-Noise-Suppression for a Thermal Harvesting Array.
Authors: Zarate-Roldan, Jorge1, Carreon-Bautista, Salvador1, Costilla-Reyes, Alfredo1, Sanchez-Sinencio, Edgar1
Source: IEEE Transactions on Circuits & Systems. Part I: Regular Papers. Aug2015, Vol. 62 Issue 8, p1918-1928. 11p.
Subjects: Maximum power point trackers, Thermoelectric generators, Energy harvesting, Capacitors, Voltage regulators, Converters (Electronics)
Abstract: A high efficiency, maximum power point tracking (MPPT) power management unit (PMU), with 3.6 \mmb\mu\bf W quiescent power, aimed at a thermoelectric generator (TEG) array is presented. The proposed energy harvesting PMU is made up of a boost converter with a cascaded capacitor-less low drop-out (CL-LDO) voltage regulator. The segmented approach allows the PMU to match the TEG array's changing dynamic series resistance via the boost converter and simultaneously provide voltage regulation with adaptive, high switching noise rejection via the CL-LDO. The boost converter's switching frequency (f{sw}) is tracked via a Sense-and-Control loop which modifies the CL-LDO's power supply rejection (PSR) characteristics to place a notch in the PSR transfer function around the average f{sw}. Experimental results show an overall system efficiency better than 57% @ 1.6 V output voltage, PSR of 40 dB at f{sw}, and a notch-tuning range of 15–65 kHz. The total active area is 0.93 mm^2 in 0.5 \mum CMOS. [ABSTRACT FROM PUBLISHER]
Copyright of IEEE Transactions on Circuits & Systems. Part I: Regular Papers is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 108597490
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  Data: A Power Management Unit With 40 dB Switching-Noise-Suppression for a Thermal Harvesting Array.
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  Data: <searchLink fieldCode="DE" term="%22Maximum+power+point+trackers%22">Maximum power point trackers</searchLink><br /><searchLink fieldCode="DE" term="%22Thermoelectric+generators%22">Thermoelectric generators</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+harvesting%22">Energy harvesting</searchLink><br /><searchLink fieldCode="DE" term="%22Capacitors%22">Capacitors</searchLink><br /><searchLink fieldCode="DE" term="%22Voltage+regulators%22">Voltage regulators</searchLink><br /><searchLink fieldCode="DE" term="%22Converters+%28Electronics%29%22">Converters (Electronics)</searchLink>
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  Data: A high efficiency, maximum power point tracking (MPPT) power management unit (PMU), with 3.6 \mmb\mu\bf W quiescent power, aimed at a thermoelectric generator (TEG) array is presented. The proposed energy harvesting PMU is made up of a boost converter with a cascaded capacitor-less low drop-out (CL-LDO) voltage regulator. The segmented approach allows the PMU to match the TEG array's changing dynamic series resistance via the boost converter and simultaneously provide voltage regulation with adaptive, high switching noise rejection via the CL-LDO. The boost converter's switching frequency (f{sw}) is tracked via a Sense-and-Control loop which modifies the CL-LDO's power supply rejection (PSR) characteristics to place a notch in the PSR transfer function around the average f{sw}. Experimental results show an overall system efficiency better than 57% @ 1.6 V output voltage, PSR of 40 dB at f{sw}, and a notch-tuning range of 15–65 kHz. The total active area is 0.93 mm^2 in 0.5 \mum CMOS. [ABSTRACT FROM PUBLISHER]
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  Data: <i>Copyright of IEEE Transactions on Circuits & Systems. Part I: Regular Papers is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1109/TCSI.2015.2434099
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      – Code: eng
        Text: English
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        PageCount: 11
        StartPage: 1918
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        Type: general
      – SubjectFull: Thermoelectric generators
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      – SubjectFull: Energy harvesting
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      – SubjectFull: Capacitors
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      – SubjectFull: Voltage regulators
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      – SubjectFull: Converters (Electronics)
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      – TitleFull: A Power Management Unit With 40 dB Switching-Noise-Suppression for a Thermal Harvesting Array.
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            NameFull: Costilla-Reyes, Alfredo
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              Text: Aug2015
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