Variation Resilient Adaptive Controller for Subthreshold Circuits
Variation Resilient Adaptive Controller for Subthreshold Circuits
Subthreshold logic is showing good promise as a viable ultra-low-power circuit design technique for power-limited applications. For this design technique to gain widespread adoption, one of the most pressing concerns is how to improve the robustness of subthreshold logic to process and temperature variations. We propose a variation resilient adaptive controller for subthreshold circuits with the following novel features: new sensor based on time-to-digital converter for capturing the variations accurately as digital signatures, and an all-digital DC-DC converter incorporating the sensor capable of generating an operating operating Vdd from 0V to 1.2V with a resolution of 18.75mV, suitable for subthreshold circuit operation. The benefits of the proposed controller is reflected with energy improvement of up to 55% compared to when no controller is employed. The detailed implementation and validation of the proposed controller is discussed.
Mishra, B
0107d656-f9ec-43b5-8e82-aabc60fc6484
Al-Hashimi, Bashir
0b29c671-a6d2-459c-af68-c4614dce3b5d
Zwolinski, Mark
adfcb8e7-877f-4bd7-9b55-7553b6cb3ea0
24 April 2009
Mishra, B
0107d656-f9ec-43b5-8e82-aabc60fc6484
Al-Hashimi, Bashir
0b29c671-a6d2-459c-af68-c4614dce3b5d
Zwolinski, Mark
adfcb8e7-877f-4bd7-9b55-7553b6cb3ea0
Mishra, B, Al-Hashimi, Bashir and Zwolinski, Mark
(2009)
Variation Resilient Adaptive Controller for Subthreshold Circuits.
Design, Automation & Test in Europe Conference & Exhibition (DATE '09), , Nice, France.
20 - 24 Apr 2009.
(doi:10.1109/DATE.2009.5090648).
Record type:
Conference or Workshop Item
(Paper)
Abstract
Subthreshold logic is showing good promise as a viable ultra-low-power circuit design technique for power-limited applications. For this design technique to gain widespread adoption, one of the most pressing concerns is how to improve the robustness of subthreshold logic to process and temperature variations. We propose a variation resilient adaptive controller for subthreshold circuits with the following novel features: new sensor based on time-to-digital converter for capturing the variations accurately as digital signatures, and an all-digital DC-DC converter incorporating the sensor capable of generating an operating operating Vdd from 0V to 1.2V with a resolution of 18.75mV, suitable for subthreshold circuit operation. The benefits of the proposed controller is reflected with energy improvement of up to 55% compared to when no controller is employed. The detailed implementation and validation of the proposed controller is discussed.
Text
03.2_1_0433.pdf
- Accepted Manuscript
More information
Submitted date: 20 April 2009
Published date: 24 April 2009
Additional Information:
Event Dates: 20-24 April, 2009
Venue - Dates:
Design, Automation & Test in Europe Conference & Exhibition (DATE '09), , Nice, France, 2009-04-20 - 2009-04-24
Organisations:
Electronic & Software Systems, EEE
Identifiers
Local EPrints ID: 266720
URI: http://eprints.soton.ac.uk/id/eprint/266720
PURE UUID: 53e4aacf-11e9-4997-abc6-0bfa13da43f8
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Date deposited: 26 Sep 2008 21:20
Last modified: 15 Mar 2024 02:39
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Contributors
Author:
B Mishra
Author:
Bashir Al-Hashimi
Author:
Mark Zwolinski
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