LDO regulator versus switched inductor DC-DC converter

Author

Kilani, Dima ; Mohammad, Baker ; Saleh, Hani ; Ismail, Mohammad

Author_Institution

Khalifa Univ. of Sci., Technol. & Res., Abu Dhabi, United Arab Emirates

fYear

2014

Firstpage

638

Lastpage

641

Abstract

DC-DC converters are important building block of most of today´s System-on-Chips (SoCs). This is true because the need to modulate the voltage of different parts of the chip to operate at the optimum level is essential to achieve high power efficiency. This paper investigates two topologies of the DC-DC converter that are widely used. The two topologies are Low Dropout regulator and Switched Inductor DC-DC buck converter. The operation for both topologies is explained as well as the advantages and disadvantages of each topology. Spice simulation with 65nm low power foundry process technology is used to compare the two topologies in terms of energy efficiency, settling time, area, and design complexity. Detail study of voltage level conversion and output load current and its impact on efficiency is also reported.

Keywords

DC-DC power convertors; SPICE; controllers; inductors; integrated circuit design; system-on-chip; 65nm low power foundry process technology; LDO regulator; SoC; Spice simulation; design complexity; energy efficiency; low dropout regulator; output load current; settling time; switched inductor DC-DC buck converter; system-on-chips; voltage level conversion; Inductors; Regulators; Silicon; Switches; System-on-chip; Transistors; Voltage control; LDO regulator; Switched Inductor converter and power efficiency;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems (ICECS), 2014 21st IEEE International Conference on

Type

conf

DOI

10.1109/ICECS.2014.7050066

Filename

7050066