Title :
Single-inductor four-switch non-inverting buck-boost dc-dc converter
Author :
Chang, Chin-Wei ; Wei, Chia-Ling
Author_Institution :
Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan
Abstract :
A single-inductor four-switch non-inverting buck-boost dc-dc converter was designed. Compared to other conventional buck-boost typologies, the presented converter reduces the number of external passive components and chip/PCB area. The chip was implemented by using the TSMC 0.35um 3.3V/5V 2P4M polycide CMOS process. The input voltage range of the presented converter covers the full output voltage range of a Li-ion battery, its output voltage is 3.3V, and its maximal load current is 300 mA. The die area of the chip is 1.38 ×1.80 mm2, packed with a 40 S/B package.
Keywords :
CMOS integrated circuits; DC-DC power convertors; inductors; secondary cells; TSMC; conventional buck-boost typology; current 300 mA; external passive components; input voltage range; lithium-ion battery; maximal load current; output voltage range; polycide CMOS process; single-inductor four-switch noninverting buck-boost DC-DC converter; size 0.35 mum; voltage 3.3 V; voltage 5 V; Batteries; CMOS process; Current measurement; Equivalent circuits; Inductors; Switches; Voltage control; boost; buck; buck-boost; dc-dc converter;
Conference_Titel :
VLSI Design, Automation and Test (VLSI-DAT), 2011 International Symposium on
Conference_Location :
Hsinchu
Print_ISBN :
978-1-4244-8500-0
DOI :
10.1109/VDAT.2011.5783629
