Comparison of latch-based charge pumps using low voltage strategies in energy harvesting applications

Lim, Michelle Sern Mi; Islam, Md. Shabiul; Jahariah, S.; Yeo, Kim Heng; Ali, Sawal Hamid Md

doi:10.1109/smelec.2016.7573594

Cited by 3 publications

(1 citation statement)

References 12 publications

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“…Voltage multipliers are rectifiers employed to generate a constant output voltage that exceeds the maximum peak-to-peak voltage of the input ac signal. Unlike conventional dc–dc up-converters relying on inductive components to boost the output voltage, voltage multipliers comprise only diodes or diode-connected transistors and capacitors, thereby enabling a better silicon integration [ 7 , 8 ]. Saif et al [ 9 ] proposed a quantitative comparison between capacitor- and inductor-based switched converters.…”

Section: Introductionmentioning

confidence: 99%

Lower-Order Compensation Chain Threshold-Reduction Technique for Multi-Stage Voltage Multipliers

Anna

Dong

et al. 2018

Sensors

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This paper presents a novel threshold-compensation technique for multi-stage voltage multipliers employed in low power applications such as passive and autonomous wireless sensing nodes (WSNs) powered by energy harvesters. The proposed threshold-reduction technique enables a topological design methodology which, through an optimum control of the trade-off among transistor conductivity and leakage losses, is aimed at maximizing the voltage conversion efficiency (VCE) for a given ac input signal and physical chip area occupation. The conducted simulations positively assert the validity of the proposed design methodology, emphasizing the exploitable design space yielded by the transistor connection scheme in the voltage multiplier chain. An experimental validation and comparison of threshold-compensation techniques was performed, adopting 2N5247 N-channel junction field effect transistors (JFETs) for the realization of the voltage multiplier prototypes. The attained measurements clearly support the effectiveness of the proposed threshold-reduction approach, which can significantly reduce the chip area occupation for a given target output performance and ac input signal.

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Section: Introductionmentioning

confidence: 99%

Lower-Order Compensation Chain Threshold-Reduction Technique for Multi-Stage Voltage Multipliers

Anna

Dong

et al. 2018

Sensors

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Sub-threshold start-up circuit with dynamic body-biasing for boost converters in thermoelectric energy harvesting

et al. 2020

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An Ultra-Low-Power, Self-Start-Up DC-DC Boost Converter for Self-Powered IoT Node

Komatla¹,

Patri²

2021

J CIRCUIT SYST COMP

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This paper presents an ultra-low-power boost converter for self-powered IoT applications to self-start and power-up IoT devices from scratch without any requirement of an external start-up. The proposed converter and its clock generator operate in sub-threshold utilizing bulk-driven technique for low-power operation. The bulk-driven technique improves charge transfer switches for effective switching using auxiliary transistors. This approach enables a MOSFET to operate on supplies lower than its threshold voltage with a significant reduction in the reverse charge transfer and switching loss while increasing the voltage conversion efficiency and output voltage. To validate the performance of the proposed architecture, the post-layout simulation is carried out in standard CMOS 0.18[Formula: see text][Formula: see text]m technology. Under low-voltage supply of 0.4[Formula: see text]V, the simulated transient output voltage takes 110[Formula: see text][Formula: see text]s to reach 1.92[Formula: see text]V with 0.15[Formula: see text] output voltage ripple, while consuming the power of 772[Formula: see text]nW.

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Comparison of latch-based charge pumps using low voltage strategies in energy harvesting applications

Cited by 3 publications

References 12 publications

Lower-Order Compensation Chain Threshold-Reduction Technique for Multi-Stage Voltage Multipliers

Lower-Order Compensation Chain Threshold-Reduction Technique for Multi-Stage Voltage Multipliers

Sub-threshold start-up circuit with dynamic body-biasing for boost converters in thermoelectric energy harvesting

An Ultra-Low-Power, Self-Start-Up DC-DC Boost Converter for Self-Powered IoT Node

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