Title :
A fully-integrated 0.18µm CMOS DC-DC step-up converter, using a bondwire spiral inductor
Author :
Wens, Mike ; Cornelissens, Koen ; Steyaert, Michiel
Author_Institution :
K.U. Leuven, Leuven
Abstract :
A fully-integrated DC-DC step-up converter in a 0.18 mum 1.8 V CMOS technology is realized with an integrated bondwire spiral inductor and an integrated MIMcap. The converter is designed to generate 3.3 V out of a 1.8 V power supply. Stacked transistors are used to cope with the high voltage. It operates in discontinuous, asynchronous switching mode, with a switching frequency of 100 MHz. The maximum output power is 150 mW, with an output ripple of 200 mV. The maximum power efficiency is 63%. A control system using a PWM scheme keeps the output voltage constant with varying loads up to 9 MHz.
Keywords :
CMOS integrated circuits; DC-DC power convertors; MIM devices; PWM power convertors; inductors; CMOS technology; DC-DC step-up converter; PWM; bondwire spiral inductor; frequency 100 MHz; integrated MIMcap; power 150 MW; size 0.18 mum; voltage 1.8 V; Bonding; CMOS technology; DC-DC power converters; Inductors; Power generation; Power supplies; Pulse width modulation; Spirals; Switching frequency; Voltage;
Conference_Titel :
Solid State Circuits Conference, 2007. ESSCIRC 2007. 33rd European
Conference_Location :
Munich
Print_ISBN :
978-1-4244-1125-2
DOI :
10.1109/ESSCIRC.2007.4430295
