@article{68736688307945c88498fa1ba277b7f7,
title = "Energy-Efficient High-Voltage Pulsers for Ultrasound Transducers",
abstract = "This brief reviews high-voltage pulsers for ultrasound imaging systems with a focus on energy efficiency. Most ultrasound imaging systems have been developed with the aim of achieving a high signal-to-noise ratio for good image quality. As miniaturization and portability of the systems are pursued recently, high energy efficiency is of great need. In the ultrasonic imaging systems, the most power-hungry block is typically the pulser that drives the ultrasound transducer at a high voltage. To better understand the pulser's operation and power consumption, an equivalent circuit model of the transducer is introduced. Based on the model, we investigate the fundamentals of pulser driving methods and review the conventional class-D pulser as well as state-of-the-art pulsers with dynamic power loss reduction techniques. Their operation principles, strengths, and limitations are analyzed and discussed in depth. ",
keywords = "DC-DC converter, Medical ultrasound imaging, charge redistribution, class-D, dynamic power consumption, energy efficiency, equivalent circuit, high-voltage pulser, miniaturization, multi-level pulse-shaping, parasitic capacitance, ultrasound transducer",
author = "Jaesuk Choi and Sangyeon Youn and Hwang, {Jae Youn} and Sohmyung Ha and Chul Kim and Minkyu Je",
note = "Funding Information: Manuscript received November 2, 2020; accepted November 21, 2020. Date of publication November 25, 2020; date of current version December 21, 2020. This work was supported in part by the Electronics Systems Industry Core Technology Development Program funded by the Ministry of Trade, Industry and Energy, South Korea, under Grant 10085624, and in part by the Korea Medical Device Development Program funded by the Korea Government (the Ministry of Science and ICT, the Ministry of Trade, Industry and Energy, the Ministry of Health and Welfare, South Korea, the Ministry of Food and Drug Safety) under Grant 202012D17. This brief was recommended by Associate Editor E. Bonizzoni. (Corresponding authors: Chul Kim; Minkyu Je.) Jaesuk Choi and Minkyu Je are with the School of Electrical and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, South Korea (e-mail: jaesuk.choi@kaist.ac.kr; mkje@kaist. ac.kr). Funding Information: This work was supported in part by the Electronics Systems Industry Core Technology Development Program funded by the Ministry of Trade, Industry and Energy, South Korea, under Grant 10085624, and in part by the Korea Medical Device Development Program funded by the Korea Government (the Ministry of Science and ICT, the Ministry of Trade, Industry and Energy, the Ministry of Health and Welfare, South Korea, the Ministry of Food and Drug Safety) under Grant 202012D17. Publisher Copyright: {\textcopyright} 2004-2012 IEEE.",
year = "2021",
month = jan,
doi = "10.1109/TCSII.2020.3040548",
language = "English (US)",
volume = "68",
pages = "19--23",
journal = "IEEE Transactions on Circuits and Systems II: Express Briefs",
issn = "1549-7747",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "1",
}