TY - GEN
T1 - Design of Improved KY Converter with Low Power ZCD Circuit for Wide Load Current Application
AU - Xie, Ying
AU - Fan, Shiquan
AU - Yuan, Chenxi
AU - Geng, Li
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/11/23
Y1 - 2020/11/23
N2 - In this paper, an improved KY converter with pulse width modulation (PWM) is proposed. The reverse current paths under discontinuous-conduction mode (DCM) are analyzed. To eliminate the reverse current exactly, a noval zero current detection (ZCD) method is proposed and demonstrated. The KY converter is fabricated by using 0.18 \mu m BCD process with active area of 3.4 mm2. The off-chip components of an inductor of 4.7 \mu H, a load capacitor of 4.7 \mu F and two flying capacitors of 100 \mu F are employed. Simulated results show that the designed ZCD can work well in DCM of the proposed converter. The power conversion efficiency (PCE) can be maintained above 90% over wide load range from 100 mA to 2 A, and the PCE is enhanced by 16.3% compared with w/o ZCD at 25 mA load current.
AB - In this paper, an improved KY converter with pulse width modulation (PWM) is proposed. The reverse current paths under discontinuous-conduction mode (DCM) are analyzed. To eliminate the reverse current exactly, a noval zero current detection (ZCD) method is proposed and demonstrated. The KY converter is fabricated by using 0.18 \mu m BCD process with active area of 3.4 mm2. The off-chip components of an inductor of 4.7 \mu H, a load capacitor of 4.7 \mu F and two flying capacitors of 100 \mu F are employed. Simulated results show that the designed ZCD can work well in DCM of the proposed converter. The power conversion efficiency (PCE) can be maintained above 90% over wide load range from 100 mA to 2 A, and the PCE is enhanced by 16.3% compared with w/o ZCD at 25 mA load current.
KW - Discontinuous-conduction mode (DCM)
KW - KY converter
KW - Pulse width modulation (PWM)
KW - Wide load range
KW - Zero current detection (ZCD)
UR - https://www.scopus.com/pages/publications/85101045398
U2 - 10.1109/ICTA50426.2020.9332054
DO - 10.1109/ICTA50426.2020.9332054
M3 - 会议稿件
AN - SCOPUS:85101045398
T3 - Proceedings of 2020 IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2020
SP - 45
EP - 46
BT - Proceedings of 2020 IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2020
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 3rd IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2020
Y2 - 23 November 2020 through 25 November 2020
ER -