Abstract
Integrated power conversion and delivery are the key to achieve high-efficiency and high-performance data processing. Power inductors with high power density and low dc resistance are the key enabler to realize miniaturized voltage regulators (VRs) with high efficiency. With the integrated voltage regulators (IVRs), interconnection length from the battery to the loads can be dramatically reduced, resulting in lower conduction loss and higher power efficiency. This article demonstrates substrates with embedded high-power-density solenoid inductors with an ultralow dc resistance for the IVRs. By incorporating advanced metal–polymer magnetic composites as the cores, the inductors show a high inductance density of 7 nH/mm2 with an ultralow dc resistance of 10 $\text{m}\Omega $ . With a low thickness of $ , the power inductors can be embedded into substrates and positioned close to the loads to realize the IVRs. A substrate-compatible panel-level process was developed to embed the magnetic-core inductors with high throughput and low cost. Compared with the air-core inductors, the magnetic core achieved four times improvement in inductance for the same dc resistance, indicating substantial footprint reduction and improvement in efficiency.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: IEEE Transactions on Components, Packaging and Manufacturing Technology
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
