Title :
Minimum PCB footprint point-of-load DC-DC converter realized with Switched-Capacitor architecture
Author :
Ng, Vincent W. ; Seeman, Michael D. ; Sanders, Seth R.
Author_Institution :
Univ. of California, Berkeley, CA, USA
Abstract :
This work reports on the design and test of a CMOS-based switched capacitor (SC) DC-DC conversion integrated circuit (IC) for the point-of-load (POL) application conventionally addressed with the buck converter. A 12V-to-1.5V converter is fabricated in a 0.18 mum technology, with an active die area of 3mm2. There is a significant reduction in printed circuit board (PCB) footprint, passive component height and cost when compared to surveyed buck converters. The converter achieves 93% peak efficiency and an efficiency of 80% over an output current range of 7 mA to 1 A. This work demonstrates the vast potential of SC converters for wide-range voltage conversion in deep-submicron CMOS technologies, when cost and efficiency are of critical importance.
Keywords :
CMOS integrated circuits; DC-DC power convertors; capacitors; printed circuits; CMOS-based switched capacitor; DC-DC conversion integrated circuit; current 7 mA to 1 A; deep-submicron CMOS technologies; efficiency 80 percent; efficiency 93 percent; minimum PCB footprint point-of-load DC-DC converter; point-of-load application; printed circuit board footprint; voltage 12 V to 1.5 V; wide-range voltage conversion; DC-DC power conversion; integrated power converter; switched-capacitor circuits;
Conference_Titel :
Energy Conversion Congress and Exposition, 2009. ECCE 2009. IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4244-2893-9
Electronic_ISBN :
978-1-4244-2893-9
DOI :
10.1109/ECCE.2009.5316488
