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Detail
Journal Article
Transformer-Reuse Reconfigurable Synchronous Boost Converter with 20 mV MPPT-Input, 88% Efficiency and 37 mW Maximum Output Power
- Authors
- Jong-Pil Im, Seung-Eon Moon, Chun-Gi Lyuh
- Issue Date
- 2016-08
- Citation
- ETRI Journal, v.38, no.4, pp.654-664
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- Abstract
- This paper presents a transformer-based reconfigurable synchronous boost converter. The lowest maximum power point tracking (MPPT)-input voltage and peak efficiency of the proposed boost converter, 20 mV and 88%, respectively, were achieved using a reconfigurable synchronous structure, static power loss minimization design, and efficiency boost mode change (EBMC) method. The proposed reconfigurable synchronous structure for high efficiency enables both a transformerbased self-startup mode (TSM) and an inductor-based MPPT mode (IMM) with a power PMOS switch instead of a diode. In addition, a static power loss minimization design, which was developed to reduce the leakage current of the native switch and quiescent current of the control blocks, enables a low input operation voltage. Furthermore, the proposed EBMC method is able to change the TSM into IMM with no additional time or energy loss. A prototype chip was implemented using a 0.18-μm CMOS process, and operates within an input voltage range of 9 mV to 1 V, and an output voltage range of 1 V to 3.3 V, and provides a maximum output power of 37 mW.
- KSP Keywords
- 3 V, Boost Converter(BC), Boost mode, CMOS Process, Input operation, Input voltage, Leakage Current, Low input, Maximum Power Point Tracking(MPPT), Mode change, Output Voltage