TY - GEN
T1 - A 95.2% efficiency dual-path DC-DC step-up converter with continuous output current delivery and low voltage ripple
AU - Shin, Se Un
AU - Huh, Yeunhee
AU - Ju, Yongmin
AU - Choi, Sungwon
AU - Shin, Changsik
AU - Woo, Young Jin
AU - Choi, Minseong
AU - Park, Se Hong
AU - Sohn, Young Hoon
AU - Ko, Min Woo
AU - Jo, Youngsin
AU - Han, Hyunki
AU - Lee, Hyung Min
AU - Hong, Sung Wan
AU - Qu, Wanyuan
AU - Cho, Gyu Hyeong
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/3/8
Y1 - 2018/3/8
N2 - DC-DC boost converters are widely used to increase the supply voltage in various applications, including LED drivers, energy harvesting, etc. [1-5]. The conventional boost converter (CBC) is shown in Fig. 27.5.1, where the switches S1 and S2 are turned on and off alternately at φ1 and φ2, respectively, and the inductor current (IL) is built up and delivered to the output. There are some critical issues in CBC because the output delivery current (IS) is not continuous. As a result, the IL can be much larger than the load current (ILOAD) as φ1 becomes longer. Since a bulky-size inductor having a low parasitic DC resistance (Rdcr) is not usable for mobile applications with a strictly limited space, this large IL results in significant conduction loss in the large RDCR of a small-size inductor. Another issue is that the discontinuous IS in φ2 causes large voltage ripple (AVOUT) at the output. Moreover, switching spike voltages can cause over-voltage stress on the loading block due to large di/dt of IS combined with parasitic inductances of the GND path.
AB - DC-DC boost converters are widely used to increase the supply voltage in various applications, including LED drivers, energy harvesting, etc. [1-5]. The conventional boost converter (CBC) is shown in Fig. 27.5.1, where the switches S1 and S2 are turned on and off alternately at φ1 and φ2, respectively, and the inductor current (IL) is built up and delivered to the output. There are some critical issues in CBC because the output delivery current (IS) is not continuous. As a result, the IL can be much larger than the load current (ILOAD) as φ1 becomes longer. Since a bulky-size inductor having a low parasitic DC resistance (Rdcr) is not usable for mobile applications with a strictly limited space, this large IL results in significant conduction loss in the large RDCR of a small-size inductor. Another issue is that the discontinuous IS in φ2 causes large voltage ripple (AVOUT) at the output. Moreover, switching spike voltages can cause over-voltage stress on the loading block due to large di/dt of IS combined with parasitic inductances of the GND path.
UR - http://www.scopus.com/inward/record.url?scp=85046402392&partnerID=8YFLogxK
U2 - 10.1109/ISSCC.2018.8310368
DO - 10.1109/ISSCC.2018.8310368
M3 - Conference contribution
AN - SCOPUS:85046402392
T3 - Digest of Technical Papers - IEEE International Solid-State Circuits Conference
SP - 430
EP - 432
BT - 2018 IEEE International Solid-State Circuits Conference, ISSCC 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 65th IEEE International Solid-State Circuits Conference, ISSCC 2018
Y2 - 11 February 2018 through 15 February 2018
ER -