Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Hyunggun Ma"'
Autor:
Woojin Park, Gyeongho Namgoong, Eunho Choi, Bonyoung Lee, Hyunjun Park, Hyunggun Ma, Franklin Bien
Publikováno v:
IEEE Transactions on Circuits and Systems II: Express Briefs. 69:4458-4462
Autor:
Hyunggun Ma1 (AUTHOR) hyunggunma@gmail.com
Publikováno v:
Semiconductors. Dec2019, Vol. 53 Issue 13, p1811-1816. 6p.
Autor:
Hyunjun Park, Bonyoung Lee, Franklin Bien, Woojin Park, Eunho Choi, Hyunggun Ma, Gyeongho Namgoong
Publikováno v:
IEEE Transactions on Circuits and Systems I: Regular Papers. 68:2702-2713
This paper presents a wide input range active rectifier using a bipolar-CMOS-DMOS (BCD) process with a high voltage conversion ratio (VCR) and high power conversion efficiency (PCE). The proposed rectifier ensures safe and robust operation under larg
Autor:
Heedon Jang, Franklin Bien, Jongmo Seo, Seungboo Yang, Ramesh Patel, Ki Jin Han, Hyunggun Ma, Seongmun Kim, Jiyun Jeong
Publikováno v:
IET Microwaves, Antennas & Propagation. 14:1222-1228
Glucose monitoring is an important clinical procedure, especially for dialysis patients who need consistent monitoring of their glucose levels. Currently, the most extensively used method for glucose monitoring involves pricking the finger and sampli
Autor:
Franklin Bien, Kyungmin Na, Eunho Choi, Hyunggun Ma, Kyeongmin Park, Gyeongho Namgoong, Woojin Park, Heedon Jang, Bonyoung Lee
Publikováno v:
IET Power Electronics. 13:1787-1796
This study reports a miniaturised discontinuous conduction mode (DCM) variable on-time (VOT) buck converter providing an output of 1.8 V in the input range of 3–12 V to support applications with large wireless coupling. Conventionally, an additiona
Autor:
Franklin Bien, Seong Mun Kim, Eunho Choi, Kyoungmin Park, Gyeongho Namgoong, Haksun Kim, Hyunggun Ma, Sanghyun Heo
Publikováno v:
IEEE Transactions on Circuits and Systems II: Express Briefs. 67:1224-1228
This brief presents a readout IC with a 20 V high-voltage (HV) transmitter (Tx) and On-Chip Differentially Modulated Time-Interleaved Sensing Method (DM-TISM) in a BCD process for a mutual-capacitive Transparent Fingerprint Sensor (TFPS) in order to
Publikováno v:
2022 IEEE International Solid- State Circuits Conference (ISSCC).
Publikováno v:
IEEE Transactions on Circuits and Systems II: Express Briefs. 66:1207-1211
An instantaneous power consuming level shifter is presented in this brief to increase the dc converter efficiency. The level shifter is used in a high-side power switch driver to remove the external capacitor which is used in bootstrap technique. The
Autor:
Hyunggun Ma
Publikováno v:
Journal of Materials Science: Materials in Electronics. 30:12532-12539
ZnO nanorods were grown on ∼ 50-nm-thick transparent conductive oxide thin films by hydrothermal synthesis. The resistivity of the ZnO films was lowered to 4 × 10−4 Ω cm upon Ga doping. Zinc nitrate hexahydrate, mixed with hexamethylenetetramin
Autor:
Eunho Choi, Bonyoung Lee, Woojin Park, Hyunggun Ma, Gyeongho Namgoong, Hyunjun Park, Franklin Bien
Publikováno v:
IEEE transactions on biomedical circuits and systems. 15(3)
In this paper, a fully integrated active rectifier with triple feedback loops is proposed to enhance power conversion efficiency (PCE) over a wide loading range by calibrating both the gate transition timing and power switch size. The on- and off-tra