An efficient CMOS LDO-assisted DC/DC buck regulator

Shirmohammadli, V.; Saberkari, Alireza; Martínez García, Herminio; Alarcón Cot, Eduardo José

doi:10.1109/DCIS.2016.7845356

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Shirmohammadli, V.

Saberkari, Alireza

Martínez García, Herminio

Alarcón Cot, Eduardo José

Document typeConference report

Defense date2016

Rights accessRestricted access - publisher's policy

Abstract

In this paper, a new structure based on linear-assisted DC-DC buck converter principle is proposed. Using a segmented LDO regulator instead of the conventional linear one in the hybrid scheme, reduces the difference between input and output voltages and also the switching frequency of the buck converter, while the circuit provides a lower output ripple, better transient response. In addition, the proposal achieves higher power efficiency rather than the linear-assisted converter, desired for power management systems of battery operated devices like biomedical implants and energy harvesting applications. A comparison analysis is done with regards to the mentioned performance indexes between the proposed structure and linear-assisted buck converter and the results are validated in HSPICE in a 0.35 µm CMOS process.

CitationShirmohammadli, V., Saberkari, A., Martinez, H., Alarcon, E. An efficient CMOS LDO-assisted DC/DC buck regulator. A: Conference on Design of Circuits and Integrated Systems. "2016 Conference on design of circuits and integrated systems (DCIS)". Granada: 2016, p. 1-4.

URIhttp://hdl.handle.net/2117/101903

DOI10.1109/DCIS.2016.7845356

Publisher versionhttp://ieeexplore.ieee.org/Xplore/home.jsp

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