A multi-rail shared error ADC with pipeline structure for DC-DC converter digital controller in 0.13µm CMOS technology

Author

Ge, Fuding ; Trivedi, Malay ; Jiang, William ; Thomas, Brent

Author_Institution

Intel Corp., Chandler, AZ, USA

fYear

2010

Firstpage

25

Lastpage

28

Abstract

This paper presents the design and measurement results of an error ADC with a pipeline structure for DC-DC converter digital controller in 0.13μm technology. The proposed error ADC shared by three voltage rails through an analog MUX. The error signal is amplified by a differential amplifier and a switched capacitor amplifier with a total gain of 10. The amplified error signal is then digitized with a conventional 5b pipeline ADC. The ADC operates at a sampling frequency of 12 MSPS, draws 3mA from a single 1.5V power supply with an area of 500μm by 600μm. Metal fringe capacitors are used for switched-capacitor circuit.

Keywords

CMOS integrated circuits; DC-DC power convertors; analogue-digital conversion; differential amplifiers; switched capacitor networks; 5b pipeline ADC; CMOS technology; DC-DC converter digital controller; analog MUX; current 3 mA; differential amplifier; metal fringe capacitors; multirail shared error ADC; pipeline structure; size 0.13 mum; size 500 mum; size 600 mum; switched capacitor amplifier; switched-capacitor circuit; voltage 1.5 V; CMOS technology; DC-DC power converters; Differential amplifiers; Digital control; Error correction; Pipelines; Rails; Sampling methods; Switched capacitor circuits; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (MWSCAS), 2010 53rd IEEE International Midwest Symposium on

Conference_Location

Seattle, WA

ISSN

1548-3746

Print_ISBN

978-1-4244-7771-5

Type

conf

DOI

10.1109/MWSCAS.2010.5548552

Filename

5548552