A 99% Current Efficient Three-Transistor Regulator With Built-In 80 ppm/°C Reference, for 0–10 mA Loads

Chowdary, Gajendranath and Aashish, T R and Chatterjee, Shouri (2018) A 99% Current Efficient Three-Transistor Regulator With Built-In 80 ppm/°C Reference, for 0–10 mA Loads. IEEE Solid-State Circuits Letters, 1 (2). pp. 26-29. ISSN 2573-9603

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Abstract

We present a regulator made of three transistors with a built-in temperature compensated voltage reference with a measured coefficient of 80 ppm/°C. The regulator is realized as a shunt-shunt negative feedback loop around a 2-transistor voltage reference. The regulator has a 99% current efficiency for load currents above 1 μA. The design has been fabricated using standard 0.18-μm CMOS technology and can drive loads upto 10 mA. Larger load currents can be supplied by increasing the size of the driving transistor. Large sizes of the driving transistor tend to reduce the feedback loop bandwidth. Measurements report a current consumption of 187 pA for the core circuit and 12.2 nA for the overall circuit including the feedback resistor. The recovery time was improved from 5 ms to 30 μs for a transient load step of 0.35 μA to 1.2 mA with a dIjdt 6 mA/μs using auxiliary circuits.

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IITH Creators:
IITH CreatorsORCiD
Chowdary, GajendranathUNSPECIFIED
Item Type: Article
Uncontrolled Keywords: Integrated voltage reference, low quiescent current, regulators, temperature stability
Subjects: Electrical Engineering
Divisions: Department of Electrical Engineering
Depositing User: Team Library
Date Deposited: 09 May 2019 06:47
Last Modified: 09 May 2019 06:47
URI: http://raiith.iith.ac.in/id/eprint/5095
Publisher URL: http://doi.org/10.1109/LSSC.2018.2809578
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