A low-volume power management module for portable applications based on a multi-output switched-capacitor circuit

This paper introduces a 2-stage power management architecture for battery powered portable applications. The presented topology combines a fixed ratio multi-output switched capacitor converter stage with two-input buck converters to achieve low volume and high power processing efficiency. Experiment...

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Main Authors: Ahsanuzzaman, S. M., Blackman, J., McRae, T., Prodic, A.
Format: Conference Proceeding
Language:English
Subjects:
Batteries
Capacitors
Computer architecture
Inductors
Switched-mode power supply
Switches
Voltage control
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creator Ahsanuzzaman, S. M.
Blackman, J.
McRae, T.
Prodic, A.
description This paper introduces a 2-stage power management architecture for battery powered portable applications. The presented topology combines a fixed ratio multi-output switched capacitor converter stage with two-input buck converters to achieve low volume and high power processing efficiency. Experimental comparisons with a two-cell battery input conventional 5 V bus architecture, providing 15 W of total power in three different voltage outputs, demonstrate up to 50% reduction in the inductances of the downstream converter stages and up to 53% reduction in losses, equivalent to the improvement of the power processing efficiency of 12%.
doi_str_mv 10.1109/APEC.2013.6520492
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subjects Batteries
Capacitors
Computer architecture
Inductors
Switched-mode power supply
Switches
Voltage control
title A low-volume power management module for portable applications based on a multi-output switched-capacitor circuit
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