Details
| Original language | English |
|---|---|
| Pages (from-to) | 6 - 17 |
| Number of pages | 12 |
| Journal | IEEE Journal of Emerging and Selected Topics in Power Electronics |
| Volume | 14 |
| Issue number | 1 |
| Early online date | 4 Aug 2025 |
| Publication status | Published - 5 Feb 2026 |
Abstract
The miniaturization of power electronics is an ever-ongoing challenge with the goal of increasing overall system efficiency and decreasing volume. The high-density integration of passive components, such as inductors and transformers, proves to be a crucial factor in advancing power supply on chip (PwrSoC) performance. In radio-frequency integrated circuits (RFIC) integrated inductors are indispensable, while for PwrSoC the high inductance to DC resistance ratio (L/R DC) requirements have limited their usage. On-chip magnetic core inductors aim to overcome this limitation. To provide guidance in the design of integrated magnetic thin-film solenoid inductors, a comprehensive analysis of the design space in a state-of-the-art commercially available technology is performed in this paper. While much has been reported on individual designs and technologies, a design space evaluation including trade-offs and design considerations has not been presented for solenoid thin-film inductors yet. Quality factor enhancing techniques are addressed, as well as the optimal switching frequency for power applications. It is complemented by an electromagnetic (EM) field simulation based design and optimization approach and addresses the difficulties of accurate circuit model representations for transient simulations. The EM simulation models are carefully verified by measurements up to 1 GHz.
Keywords
- Inductors, integrated power converter, magnetic cores, microinductors, power supply on chip, thin-film inductors, power supply on chip (PwrSoC)
ASJC Scopus subject areas
- Energy(all)
- Energy Engineering and Power Technology
- Engineering(all)
- Electrical and Electronic Engineering
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In: IEEE Journal of Emerging and Selected Topics in Power Electronics, Vol. 14, No. 1, 05.02.2026, p. 6 - 17.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Analysis and Design of On-Chip Magnetic Core Solenoid Inductors for Integrated Power Converters
AU - Stoebe, Jan
AU - Otten, Jens
AU - Pieper, Ferdinand
AU - Issakov, Vadim
AU - Wicht, Bernhard
N1 - Publisher Copyright: © 2013 IEEE.
PY - 2026/2/5
Y1 - 2026/2/5
N2 - The miniaturization of power electronics is an ever-ongoing challenge with the goal of increasing overall system efficiency and decreasing volume. The high-density integration of passive components, such as inductors and transformers, proves to be a crucial factor in advancing power supply on chip (PwrSoC) performance. In radio-frequency integrated circuits (RFIC) integrated inductors are indispensable, while for PwrSoC the high inductance to DC resistance ratio (L/R DC) requirements have limited their usage. On-chip magnetic core inductors aim to overcome this limitation. To provide guidance in the design of integrated magnetic thin-film solenoid inductors, a comprehensive analysis of the design space in a state-of-the-art commercially available technology is performed in this paper. While much has been reported on individual designs and technologies, a design space evaluation including trade-offs and design considerations has not been presented for solenoid thin-film inductors yet. Quality factor enhancing techniques are addressed, as well as the optimal switching frequency for power applications. It is complemented by an electromagnetic (EM) field simulation based design and optimization approach and addresses the difficulties of accurate circuit model representations for transient simulations. The EM simulation models are carefully verified by measurements up to 1 GHz.
AB - The miniaturization of power electronics is an ever-ongoing challenge with the goal of increasing overall system efficiency and decreasing volume. The high-density integration of passive components, such as inductors and transformers, proves to be a crucial factor in advancing power supply on chip (PwrSoC) performance. In radio-frequency integrated circuits (RFIC) integrated inductors are indispensable, while for PwrSoC the high inductance to DC resistance ratio (L/R DC) requirements have limited their usage. On-chip magnetic core inductors aim to overcome this limitation. To provide guidance in the design of integrated magnetic thin-film solenoid inductors, a comprehensive analysis of the design space in a state-of-the-art commercially available technology is performed in this paper. While much has been reported on individual designs and technologies, a design space evaluation including trade-offs and design considerations has not been presented for solenoid thin-film inductors yet. Quality factor enhancing techniques are addressed, as well as the optimal switching frequency for power applications. It is complemented by an electromagnetic (EM) field simulation based design and optimization approach and addresses the difficulties of accurate circuit model representations for transient simulations. The EM simulation models are carefully verified by measurements up to 1 GHz.
KW - Inductors
KW - integrated power converter
KW - magnetic cores
KW - microinductors
KW - power supply on chip
KW - thin-film inductors
KW - power supply on chip (PwrSoC)
UR - http://www.scopus.com/inward/record.url?scp=105013060804&partnerID=8YFLogxK
U2 - 10.1109/jestpe.2025.3595802
DO - 10.1109/jestpe.2025.3595802
M3 - Article
VL - 14
SP - 6
EP - 17
JO - IEEE Journal of Emerging and Selected Topics in Power Electronics
JF - IEEE Journal of Emerging and Selected Topics in Power Electronics
SN - 2168-6777
IS - 1
ER -