Title :
A 1.2V buck converter with a novel on-chip low-voltage current-sensing scheme
Author :
Leung, Chi Yat ; Mok, Philip K T ; Leung, Ka Nang
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., China
Abstract :
A low-voltage on-chip current-sensing circuit for buck power converter is proposed. The minimum supply voltage of the proposed current-sensing circuit is 1.2V (where Vth = 0.85V at room temperature), and the sensing accuracy is higher than 94%. The proposed buck converter is able to operate at a 1.2-V supply with higher than 98% power-conversion efficiency and with a maximum output current of 120mA.
Keywords :
CMOS integrated circuits; current-mode circuits; low-power electronics; power convertors; 0.85 V; 1.2 V; 120 mA; buck power converter; current-sensing circuit; low-voltage current-sensing; on-chip current-sensing; power-conversion efficiency; sensing accuracy; supply voltage; Batteries; Buck converters; CMOS technology; Circuits; Electronics industry; Paramagnetic resonance; Personal digital assistants; Power engineering and energy; Temperature sensors; Voltage;
Conference_Titel :
Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on
Print_ISBN :
0-7803-8251-X
DOI :
10.1109/ISCAS.2004.1329935
