The area of my research work is Analog CMOS VLSI Circuit/System Design. Activities in my research team can be broadly classified in to two categories. The first one involves architecture development and prototype design of analog circuits/systems in three specific topics namely, Interface unit for high speed data link, On-chip DC-DC converter and Signal acquisition front-end. The second category of our work is about developing and prototyping automatable design methodologies for frequently used analog circuits/systems.
For high speed data link we have proposed a number of power efficient high speed data receivers and transmitters with active terminator. Some of our design also enables simultaneous two-way data transmission over a common link.
We have proposed a switching scheme for switched-capacitor based DC-DC converter which improves the power efficiency by 5-10%. We have proposed a scheme of dynamically adjusting switching frequency of switched-capacitor based DC-DC converter which helps to maintain high power efficiency across wide range of load current. Both, the switching scheme and switching frequency adjustment are generic enough to be applied for buck and boost converters.
We have proposed a Geometric Programming (GP) based circuit sizing method for optimum design. The sizing method is very fast and robust. The GP based optimization method has been upgraded to address practical design considerations and issues in sub-micron technologies. Prototype codes have been implemented to design a number of practical circuit meeting competitive specifications. We also have proposed a design methodology for analog system utilizing the GP-based circuit sizing method. A prototype code has been implemented to design Analog-to-Digital Converter (ADC). To design an ADC, normally, an experienced designer takes more than 3 months, which is performed by the prototype code in 6 hours.
-
Self Biasing of High Performance Folded Cascode CMOS Op-Amp P. Mandal and V. Visvanathan By International Journal of Electronics Taylor & Francis, No.9, Vol. 87 795- 808 (2000)
-
A Hybrid, Fully-Integrated, Dual-output DC-DC Converter for Portable Electronics Dam S., Mandal P. By Transactions on Power Electronics 38 4360-4370 (2021)
-
CMOS Op-Amp Sizing Using a Geometric Programming Formulation P. Mandal and V. Visvanathan By Transactions on Computer Aided Design of Integrated Circuits and Systems IEEE, No. 1, Vol 20 22-38 (2001)
-
A new current-mode receiver for high-speed electrical/optical link Rao P. V. S., Mandal P. By International Journal of Electronics and Communication Elsevier, No. 2, Vol. 65, 107-116 (2011)
-
A High Performance Switched Capacitor Based DC-DC Buck Converter Suitable for Embedded Power Management Applications Maiti B., Mandal P. By IEEE Transactions on VLSI 20 1880-1885 (2012)
-
A Pseudo Cross-Coupled Switch-Capacitor based DCDC Boost Converter for High Efficiency and High Power-Density Tamal Das, Sankalan Prasad, Samiran Dam and Pradip Mandal By Transactions on Power Electronics IEEE, No. 11, Vol. 29, 5961-5974 (2014)
-
Current-mode triline transceiver for coded differential signaling across on-chip global interconnects Wary N., Mandal P. By IEEE Transaction of VLSI 25 2575-2587 (2017)
-
Current-mode full-duplex transceiver for lossy on-chip global interconnects Wary N., Mandal P. By IEEE Journal of Solid-State Circuits 52 2026-2037 (2017)
-
An Integrated DC-DC Boost Converter having Low Output Ripple Suitable for Analog Applications Dam S., Mandal P. By IEEE Transactions on Power Electronics 33 5108-5117 (2018)
-
An efficient method of Pareto-optimal front generation for analog circuits Kundu S., Mandal P. By Analog Integrated Circuits and Signal Processing 94 289-319 (2018)
Principal Investigator
- Design and Implementation of an Efficient Power Management IC in Sub-micron Technology for Space Application
Co-Principal Investigator
- Development and Demonstration of Integrated Instrumentation System for Quantitative Detection of Water Contaminants with Information Database for Surveillance of Waterborne Diseases Ministry of Electronics and Information Technology
Ph. D. Students
Abdul Salam K K
Area of Research: Design Automation of Low Power Analog/Mixed signal circuits
Perumalla Subrahmanyam
Area of Research: Analog and Mixed-signal design
Saikat Das
Area of Research: High speed interface circuits in wired link
Suman Biswas
Area of Research: Instrumentation System Design
Tamal Chowdhury
Area of Research: High speed interface circuits in wired link
MS Students
Kali Pada Bhukta
Area of Research: Switched-capacitor based power management system
Sohini Ghosh
Area of Research: Switched-capacitor based power management system