Miniaturized Low-Voltage Power Converters With Fast Dynamic Response
Author(s)Giuliano, David M.; Zwart, Jacob; Perreault, David J.; D'Asaro, Matthew Eric
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This paper demonstrates a two-stage approach for power conversion that combines the strengths of variable-topology switched capacitor techniques (small size and light-load performance) with the regulation capability of magnetic switch-mode power converters. The proposed approach takes advantage of the characteristics of complementary metal-oxide-semiconductor (CMOS) processes, and the resulting designs provide excellent efficiency and power density for low-voltage power conversion. These power converters can provide low-voltage outputs over a wide input voltage range with very fast dynamic response. Both design and fabrication considerations for highly integrated CMOS power converters using this architecture are addressed. The results are demonstrated in a 2.4-W dc-dc converter implemented in a 180-nm CMOS IC process and co-packaged with its passive components for high performance. The power converter operates from an input voltage of 2.7-5.5 V with an output voltage of ≤1.2 V, and achieves a 2210 W/in[superscript 3] power density with ≥80% efficiency.
DepartmentMassachusetts Institute of Technology. Department of Electrical Engineering and Computer Science; Massachusetts Institute of Technology. Laboratory for Electromagnetic and Electronic Systems
IEEE Journal of Emerging and Selected Topics in Power Electronics
Institute of Electrical and Electronics Engineers (IEEE)
Giuliano, David M., Matthew E. D’Asaro, Jacob Zwart, and David J. Perreault. “Miniaturized Low-Voltage Power Converters With Fast Dynamic Response.” IEEE J. Emerg. Sel. Topics Power Electron. 2, no. 3 (September 2014): 395–405.
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