Current Context and Research Trends in Linear DC–DC Converters
Loading...
Files
Size: 2.48 MB, File format: Adobe PDF
Date
Authors
Gunawardane, K
Padmawansa, N
Kularatna, N
Subasinghage, K
Lie, TT
Supervisor
Item type
Degree name
Journal Title
Journal ISSN
Volume Title
Publisher
MDPI AG
Abstract
With the introduction of switch-mode power supplies (SMPS) in the mid-1970s, the efficiency of DC–DC conversion rose from 60 to 80% and SMPS became a popular power supply solution. However, linear regulators have not become obsolete. The modern power management system in portable devices supports a complex mix of DC–DC converters, combining switch-mode power supplies (SMPS), switched capacitor converters (SCCs), and linear regulators in the form of low-dropout regulators (LDOs). LDOs are used to supply low-voltage DC power rails with very low noise and high current slew rate capability, which are usually fed by the output rail of SMPS. This paper provides a comprehensive review of the evolution of the application scope of linear-type DC–DC converters in the power supply context and the present research trends. First, we review the context of linear DC–DC converters in detail, particularly in portable device power supplies. Then, the details of LDO regulators and their recent industry development and research trends are discussed. Then, the discussion focuses on supercapacitor-assisted low-dropout (SCALDO) regulator design and its scope in the portable device power management together with SCALDO-based dual output and reduced switch designs, and finally, the conclusions follow.
Description
Keywords
DC–DC converters, Portable devices, LDO, Supercapacitor technologies, SCALDO
Source
Applied Sciences, 12(9), 4594. https://doi.org/10.3390/app12094594
Publisher's version
Rights statement
Creative Commons Attribution (CC BY)
© 2022 by the authors. Licensee MDPI, Basel, Switzerland. Open access.
© 2022 by the authors. Licensee MDPI, Basel, Switzerland. Open access.
Permanent link
Endorsement
Review
Supplemented By
Referenced By
Creative Commons license
Except where otherwise noted, this item's license is described as Creative Commons Attribution (CC BY)