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A 464-nA Quiescent Current Buck Converter With 93.7% Peak Efficiency for IoT Devices
- Authors
- Guo, Tian; Duan, Quanzhen; Lee, Minseok; Roh, Jeongjin
- Issue Date
- Aug-2023
- Publisher
- Institute of Electrical and Electronics Engineers
- Keywords
- Buck converter; dynamic pulse frequency modulation (PFM) control; high efficiency; low-power bandgap reference (BGR); ultra-low quiescent current
- Citation
- IEEE Transactions on Industrial Electronics, v.71, no.7, pp 1 - 5
- Pages
- 5
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE Transactions on Industrial Electronics
- Volume
- 71
- Number
- 7
- Start Page
- 1
- End Page
- 5
- ISSN
- 0278-0046
1557-9948
- Abstract
- This article presents a low-quiescent current, high-efficiency buck converter. A dynamic pulse frequency modulation control with adaptive off-time was proposed to increase efficiency. An ultra-low power system can be achieved with minimized quiescent current in each block and a low-power bandgap reference. The entire proposed buck converter consumed a quiescent current of 464 nA with a peak efficiency of 93.7$%$ over the load range from 0 to 50 mA. In addition, a maximum converter output ripple of only 28 mV was achieved at this ultra-low quiescent current.
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Related Researcher
- Roh, Jeong jin
- ERICA 공학대학 (SCHOOL OF ELECTRICAL ENGINEERING)