Title :
A CMOS monolithic 5-MHz, 5-V, 250-mA, 56% efficiency DC/DC switch-mode boost converter with dynamic PWM for embedded power management
Author :
McShane, E. ; Shenai, K.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Illinois Univ., Chicago, IL, USA
Abstract :
Results of a 5 MHz, 5 V, 250 mA monolithic CMOS DC/DC boost converter are presented. It utilizes a dynamic PWM control of the duty cycle to respond to rapid load transients. The converter achieved a power conversion efficiency of 56% and an output ripple under 6% when supplying 100 mA DC load current. The Q of the monolithic inductor was under 1 at the 5 MHz switching rate, suggesting that much higher efficiencies will result from low-resistance magnetic components. The circuit was implemented in 0.5 /spl mu/m CMOS in a die area less than 1.5/spl times/1.5 mm/sup 2/.
Keywords :
CMOS integrated circuits; DC-DC power convertors; PWM power convertors; Q-factor; inductors; monolithic integrated circuits; 0.5 mum; 1.5 mm; 100 mA; 250 mA; 5 MHz; 5 V; 56 percent; DC load current; DC/DC switch-mode boost converter; die area; duty cycle; dynamic PWM; embedded power management; low-resistance magnetic components; monolithic CMOS DC/DC boost converter; monolithic inductor Q; output ripple; power conversion efficiency; switching rate; Circuits; DC-DC power converters; Energy management; Feedback; Inductors; Pulse width modulation; Pulse width modulation inverters; Switches; Switching converters; Voltage;
Conference_Titel :
Industry Applications Conference, 2001. Thirty-Sixth IAS Annual Meeting. Conference Record of the 2001 IEEE
Conference_Location :
Chicago, IL, USA
Print_ISBN :
0-7803-7114-3
DOI :
10.1109/IAS.2001.955489
