NDLI: A Low-Complexity Dual-Voltage-Loop Digital Control Architecture With Dynamically Varying Voltage and Current References

Content Provider	IEEE Xplore Digital Library
Author	Shangzhi Pan Jain, P.K.
Copyright Year	1986
Abstract	In this paper, a low-complexity dual-voltage-loop digital control architecture is presented for voltage regulators (VRs), delivering power to processors. The proposed digital control architecture uses low speed and less complex digital-to-analog converters instead of high-speed analog-to-digital converters, thus significantly reducing the system complexity and cost. In this control architecture, there are two voltage loops, and the voltage reference is dynamically generated to selectively track one of them, as compared to other control methods where the output voltage tracks the voltage reference. Moreover, a straightforward control law is used, which does not require any compensator, making the proposed digital architecture simple and easy to implement. The dual-voltage-loop architecture breaks dependence between the system transient response and the system control bandwidth. One voltage loop is designed for the stable system operation, and the other is dedicated for the load transient response. Thus, the digital controller can be designed in such a way that the VR operates at a relatively low switching frequency to reduce power losses, and at the same time, it is also able to provide fast transient response. The proposed small signal model reveals that the inner current loop is analog and the voltage loop is digital. The proposed controller thus can benefit from both: having valuable features of digital control but without limitations such as limit cycle, which is eliminated by the inherent dithering characteristic. Theoretical, simulation and experimental results prove the effective operation and excellent dynamic performance of the low-complexity digital controller, thus making it a valuable candidate for a high-volume, low-cost digital controller for processors' VRs.
Sponsorship	IEEE Power Electronics Society
Starting Page	2049
Ending Page	2060
Page Count	12
File Size	1324897
File Format	PDF
ISSN	08858993
Volume Number	29
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	voltage regulator Adaptive control DC-DC power converters digital control nonlinear control
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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