Minbok Lee
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Minbok Lee has a total of 4 co-authors. Here are the top co-authors by number of shared publications:
Jaeha Kim
Department of Electrical and Computer Engineering and the Inter-University Semiconductor Research Center, Seoul National University, Seoul 151-744, South Korea
1 shared publicationJoonseok Yang
Department of Electrical and Computer Engineering and the Inter-University Semiconductor Research Center, Seoul National University, Seoul 151-744, South Korea
1 shared publicationMyeong-Jae Park
Department of Electrical and Computer Engineering and the Inter-University Semiconductor Research Center, Seoul National University, Seoul 151-744, South Korea
1 shared publicationSung-Youb Jung
Department of Electrical and Computer Engineering and the Inter-University Semiconductor Research Center, Seoul National University, Seoul 151-744, South Korea
1 shared publication
Latest Publications
- 28 September 2017
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Circuits and Systems I: Regular Papers
- Vol. 65 (1) , 366-379
Design and Analysis of Energy-Efficient Single-Pulse Piezoelectric Energy Harvester and Power Management IC for Battery-Free Wireless Remote Switch Applications
This paper presents a piezoelectric-based power management solution for battery-free wireless remote switches (BWSs). The proposed BWS IC, including a piezoelectric (PE) energy harvester and a buck converter, can collect the energy generated by a single PE-button press, and then supply that energy to a wireless transmitter to send a message. By combining a rectifier using the synchronized switch harvesting on inductor technique and a 6:1 series-parallel switched-capacitor converter, the proposed PE energy harvester can maximize the collected amount of energy, while supplying it at a low output voltage. In addition, by employing a switching-based start-up scheme and a variable ON-time pulse-frequency modulation scheme, the proposed buck converter can reduce the loss associated with charging the output capacitor during start-up, and then deliver the largest possible energy to the load, while maintaining low voltage ripples and high-power efficiency. A prototype BWS IC fabricated with high-voltage 250-nm CMOS technology was shown to be capable of harvesting a total energy of 246 μJ from a single button-pressing of a 300-mm² lead magnesium niobate-lead titanate PE disc. More than 200 μJ was delivered to the load, sufficient to transmit a 4-B-long message via a 2.4-GHz wireless USB channel over a 10-m distance.
- 28 September 2017
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Circuits and Systems I: Regular Papers
- Vol. 65 (1) , 366-379
Design and Analysis of Energy-Efficient Single-Pulse Piezoelectric Energy Harvester and Power Management IC for Battery-Free Wireless Remote Switch Applications
This paper presents a piezoelectric-based power management solution for battery-free wireless remote switches (BWSs). The proposed BWS IC, including a piezoelectric (PE) energy harvester and a buck converter, can collect the energy generated by a single PE-button press, and then supply that energy to a wireless transmitter to send a message. By combining a rectifier using the synchronized switch harvesting on inductor technique and a 6:1 series-parallel switched-capacitor converter, the proposed PE energy harvester can maximize the collected amount of energy, while supplying it at a low output voltage. In addition, by employing a switching-based start-up scheme and a variable ON-time pulse-frequency modulation scheme, the proposed buck converter can reduce the loss associated with charging the output capacitor during start-up, and then deliver the largest possible energy to the load, while maintaining low voltage ripples and high-power efficiency. A prototype BWS IC fabricated with high-voltage 250-nm CMOS technology was shown to be capable of harvesting a total energy of 246 μJ from a single button-pressing of a 300-mm² lead magnesium niobate-lead titanate PE disc. More than 200 μJ was delivered to the load, sufficient to transmit a 4-B-long message via a 2.4-GHz wireless USB channel over a 10-m distance.