Title :
Ultra low power control circuits for PWM converters
Author :
Dancy, Abram P. ; Chandrakasan, Anantha P.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., MIT, Cambridge, MA, USA
Abstract :
Low voltage high-efficiency DC-DC conversion circuits are integral components of battery operated portable systems. This paper presents the design of a pulse width modulated (PWM) controller for a milliwatt level DC-DC converter. Low power control circuitry is constructed by utilizing a delay line based PWM generator and low-resolution feedback. A DC-DC converter has been fabricated which delivers 5 mW at 1 V, while achieving an efficiency of 88%. The PWM consumes only 10 μW
Keywords :
DC-DC power convertors; PWM power convertors; delay lines; feedback; power control; 1 V; 5 mW; 88 percent; PWM converters; battery operated portable systems; delay line based PWM generator; high-efficiency DC-DC conversion circuits; low-resolution feedback; milliwatt level DC-DC converter; ultra low power control circuits; Digital circuits; Energy consumption; Frequency; Low voltage; Power control; Power generation; Power system dynamics; Pulse width modulation converters; Switching converters; Voltage control;
Conference_Titel :
Power Electronics Specialists Conference, 1997. PESC '97 Record., 28th Annual IEEE
Conference_Location :
St. Louis, MO
Print_ISBN :
0-7803-3840-5
DOI :
10.1109/PESC.1997.616620
