Title :
Bidirectional current-mode capacitor multiplier in DC-DC converter compensation
Author :
Chang, Chia-Jung ; Chen, Ke-Horng
Author_Institution :
Dept. of Electr. & Control Eng., Nat. Chiao-Tung Univ., Hsinchu, Taiwan
Abstract :
Bidirectional current-mode capacitor multipliers for on-chip DC-DC converter compensation are presented in this paper. The increasing demand for portable devices is a driving force toward higher integration. Reducing physical area with the same or better performance is carried out. Based on TSMC 0.35μm technology, we demonstrate that a small capacitor is multiplied by a factor about 200. It allows the control system compensating circuit of DC-DC converter be easily integrated on a chip and occupy less silicon area. The experimental results show that the DC-DC converter with proposed architecture is stable for wide loading conditions from 10mA to 400mA while input voltage is 3.3V and output voltage is 2.0V. The quiescent current consumed is 9μA by single-ended capacitor multiplier and 19μA by two-ended capacitor multiplier.
Keywords :
CMOS logic circuits; DC-DC power convertors; capacitors; current-mode circuits; multiplying circuits; 0.35 micron; 10 to 400 mA; 19 muA; 2 V; 3.3 V; 9 muA; DC-DC converter compensation; bidirectional current-mode capacitor multiplier; control system compensating circuit; single-ended capacitor multiplier; two-ended capacitor multiplier; Buck converters; Capacitors; Control engineering; Control systems; DC-DC power converters; Integrated circuit technology; Silicon; Switches; Switching converters; Voltage control;
Conference_Titel :
System-on-Chip for Real-Time Applications, 2005. Proceedings. Fifth International Workshop on
Print_ISBN :
0-7695-2403-6
DOI :
10.1109/IWSOC.2005.45
