Title :
Digitally programmable DC-DC voltage down converter
Author :
Lin, M.C. ; Lin, H.Y. ; Chen, C.L. ; Jou, S.-J.
Author_Institution :
Dept. of Electr. Eng., Nat. Central Univ., Chung-Li, Taiwan
fDate :
6/21/1905 12:00:00 AM
Abstract :
This paper describes a digitally programmable DC-DC voltage down converter (VDC) with a new structure of pulse width modulation (PWM) circuit. The PWM circuit is constructed by a cascaded digitally controlled oscillator (DCO) delay cells and provides two control words to select the operating frequency and duty cycle respectively. The VDC was implemented with a 0.6-μm triple-metal CMOS process on 1000×1000 μm2 core size. The simulation results show that it can convert +5 V input voltage to +2~+5 V output voltage in the 50 μs settling time
Keywords :
CMOS digital integrated circuits; DC-DC power convertors; PWM power convertors; power integrated circuits; programmable circuits; 0.6 micron; 2 to 5 V; cascaded digitally controlled oscillator delay cell; digitally programmable DC-DC voltage down converter; pulse width modulation circuit; triple-metal CMOS process; DC-DC power converters; Delay; Digital control; Digital modulation; Modulation coding; Oscillators; Pulse circuits; Pulse width modulation; Pulse width modulation converters; Voltage;
Conference_Titel :
ASICs, 1999. AP-ASIC '99. The First IEEE Asia Pacific Conference on
Conference_Location :
Seoul
Print_ISBN :
0-7803-5705-1
DOI :
10.1109/APASIC.1999.824109
