Title :
Thermal Compensation Method for CMOS Digital Integrated Circuits Using Temperature-Adaptive DC–DC Converter
Author :
Ma, Dongsheng ; Zhang, Chuang
Author_Institution :
Electr. & Comput. Eng. Dept., Arizona Univ., Tucson, AZ
Abstract :
A cost-effective thermal compensation technique for CMOS digital integrated circuits (ICs) is proposed. The technique features a temperature-adaptive dc-dc converter serving as both temperature detector and variable power supply. The converter adopts a delay-line-based analog-to-digital converter to translate the temperature information into digital signals. By adjusting the output voltage, the dc-dc converter can help stabilize the ICs´ operating frequency. The system was fabricated with a standard 1.5-mum digital CMOS process. With a supply of 3.3 V, the converter is capable of providing a variable supply voltage of 1.1-2.0 V with a maximum power efficiency of 92.1%. With this compensation technique, the temperature sensitivity of ICs is reduced from 4046 to 74 ppm/degC within a temperature range of 0-110degC
Keywords :
CMOS digital integrated circuits; DC-DC power convertors; analogue-digital conversion; compensation; delay lines; integrated circuit design; 0 to 110 C; 1.1 to 2 V; 1.5 micron; 3.3 V; 92.1 percent; CMOS digital integrated circuits; DC-DC converter; analog-to-digital converter; delay line; temperature detector; temperature-adaptive converter; thermal compensation; variable power supply; Analog-digital conversion; CMOS digital integrated circuits; DC-DC power converters; Delay; Detectors; Frequency conversion; Power supplies; Temperature distribution; Temperature sensors; Voltage; Adaptive dc–dc converter; digital CMOS integrated circuit (IC); thermal compensation;
Journal_Title :
Circuits and Systems II: Express Briefs, IEEE Transactions on
DOI :
10.1109/TCSII.2006.882346
