Title :
A 65MHZ switching rate, two-stage interleaved synchronous buck converter with fully integrated output filter
Author :
Abedinpour, Siamak ; Bakkaloglu, Bertan ; Kiaei, Sayfe
Author_Institution :
Freescale Semicond. Inc., Tempe, AZ
Abstract :
Design and analysis of a fully integrated two-stage interleaved synchronous buck DC-DC converter with on-chip filter inductor and capacitor is presented. The DC-DC converter is designed and fabricated in a 0.18 mum SiGe RFBiCMOS process technology and generates 1.5V-2.0V programmable output voltage supporting a maximum output current of 200mA. High switching frequency, multi-phase interleaved operation, and fast hysteretic controller reduce the filter inductor and capacitor sizes by two orders of magnitude compared to the state-of-the-art converters and enable a fully integrated converter. The fully integrated buck regulator achieves 64% efficiency while providing an output current of 200 mA
Keywords :
BiCMOS integrated circuits; DC-DC power convertors; integrated circuit design; network analysis; radiofrequency integrated circuits; 0.18 micron; 1.5 to 2.0 V; 200 mA; 65 MHz; DC-DC converter; RFBiCMOS process technology; SiGe; buck converter; capacitor; filter inductor; hysteretic controller; multiphase interleaved operation; two-stage interleaved synchronous converter; Buck converters; Capacitors; DC-DC power converters; Filters; Germanium silicon alloys; Inductors; Silicon germanium; Switching converters; Switching frequency; Voltage;
Conference_Titel :
Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on
Conference_Location :
Island of Kos
Print_ISBN :
0-7803-9389-9
DOI :
10.1109/ISCAS.2006.1693833
