Design and Optimization Techniques of Over-Chip Bondwire MicroTransformers with LTCC core
| Autor: | Antonio Camarda, Marco Tartagni, Saibal Roy, Rudi Paolo Paganelli, Enrico Macrelli, Aldo Romani |
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| Přispěvatelé: | Antonio, Camarda, Enrico, Macrelli, Rudi, Paolo Paganelli, Marco, Tartagni, Saibal, Roy, Aldo, Romani |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Wire bonding
Silicon Power supply on chip (PwrSoC) Energy Engineering and Power Technology Toroidal magnetic field 02 engineering and technology Integrated circuit Inductor over-chip 01 natural sciences On-chip law.invention Magnetic transformer power supply in package Fabrication Magnetic core law Soft magnetic material Wire 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Inductors Harvesting Electrical and Electronic Engineering Inductance Micromagnetics Electronic circuit 010302 applied physics Physics Transformer Boost converter 020208 electrical & electronic engineering Magnetic-core Ferrite Low-temperature co-fired ceramic low-temperature co-fired ceramics Computational physics Power supply in package (PwrSiP) Power Magnetic cores Soft magnetic materials System-on-chip Toroidal magnetic fields Wires Bonding wire Energy harvesting applications Coupling coefficient of resonators power supply on chip |
| Zdroj: | IEEE Journal of Emerging and Selected Topics in Power Electronics Volume: 6, Issue 2 (2018): 592–603. doi:10.1109/JESTPE.2017.2751745 info:cnr-pdr/source/autori:Camarda A.; Macrelli E.; Paganelli R.P.; Tartagni M.; Roy S.; Romani A./titolo:Design and Optimization Techniques of Over-Chip Bondwire MicroTransformers with LTCC core/doi:10.1109%2FJESTPE.2017.2751745/rivista:IEEE Journal of Emerging and Selected Topics in Power Electronics/anno:2018/pagina_da:592/pagina_a:603/intervallo_pagine:592–603/volume:Volume: 6, Issue 2 |
| DOI: | 10.1109/JESTPE.2017.2751745 |
| Popis: | none 6 si This paper describes the realization of bond-wire micro-magnetics by using standard bonding-wires and a toroidal ferromagnetic LTCC core with high resistivity. The proposed fabrication procedure is suitable for the development of magnetic components on top of an IC with small profile and small size (< 15 mm2). A transformer is designed and applied over-chip, working in the MHz range with high inductance (~33 μ H) and high effective turns-ratio (~20). Applications include bootstrap circuits and micro-power conversion for energy harvesting. Measurements demonstrate a maximum secondary Q-factor of 11.6 at 1.3 MHz, and a coupling coefficient of 0.65 with an effective turns ratio of 19, which are among the highest values reported for toroidal miniaturized magnetics. The achieved inductance density is 2 μH/mm2, along with an inductance per unit core volume of 15.6 μH/mm3, and a DC inductance-to-resistance ratio of 2.23 μH/Ω. The presented technique allows to obtain over-chip magnetics trough a post-processing of the core, and it is also suitable for highdensity power supply in package (PwrSiP) and power supply on chip (PwrSoC). Finally, a series of optimization techniques for planar core magnetic devices in order to maximize the inductance per unit area are discussed and applied to the considered case. mixed Antonio, Camarda; Enrico, Macrelli; Rudi, Paolo Paganelli; Marco, Tartagni; Saibal, Roy; Aldo, Romani Camarda, Antonio; Enrico, Macrelli; Rudi, Paolo Paganelli; Tartagni, Marco; Saibal, Roy; Romani, Aldo |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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