A design methodology for integrated inductor-based DC–DC converters |
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| Authors: | Vitor Costa Pedro Mendonça dos Santos Beatriz Borges |
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| Affiliation: | 1. Instituto de Telecomunicações, Lisbon, Portugal;2. Instituto Superior de Engenharia de Lisboa, Lisbon, Portugal;3. Academia Militar, Lisbon, Portugal;4. Instituto Superior Técnico, Lisbon, Portugal |
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| Abstract: | A design methodology for monolithic integration of inductor based DC–DC converters is proposed in this paper. A power loss model of the power stage, including the drive circuits, is defined in order to optimize efficiency. Based on this model and taking as reference a 0.35 μm CMOS process, a buck converter was designed and fabricated. For a given set of operating conditions the defined power loss model allows to optimize the design parameters for the power stage, including the gate-driver tapering factor and the width of the power MOSFETs. Experimental results obtained from a buck converter at 100 MHz switching frequency are presented to validate the proposed methodology. |
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