The Würth Elektronik webinar, “Power Inductor Parameters Explained,” partnered with Digi-Key Electronics, provides a detailed exploration of key power inductor parameters and their role in switch mode power supply topologies. Presented by Stefan Schultz, the session explains how different constructions, core materials (like ferrite, iron powder, and iron alloys), and core shapes influence performance. It covers critical parameters such as rated current, saturation current, and self-heating behavior, offering insights into how these parameters are determined using advanced testing standards like IEC 62024-2. The webinar also examines the role of core shapes and air gaps in energy storage and magnetic field management, emphasizing their importance in minimizing losses and optimizing performance.
A practical demonstration using the REDEXPERT® online tool showcases the process of selecting power inductors for a DC-DC converter, factoring in application-specific parameters like input/output voltage, current, switching frequency, and ambient temperature. The webinar investigates inductor losses, breaking them down into DC losses, AC losses (due to skin and proximity effects), and core losses (hysteresis and eddy currents). Participants learn how to use REDEXPERT® to filter inductors by size, footprint, shielding, and efficiency while analyzing performance through metrics like total losses and saturation behavior under different operating conditions. With practical applications and a focus on design optimization, this session is a comprehensive guide to understanding and selecting power inductors effectively.
Video content
- Introduction
- Core Materials and Characteristics
- Core Shapes
- Key Parameters of Power Inductors
- Inductor Losses
- Resonance and Voltage Rating
- Practical Demonstration Using REDEXPERT® Tool
- Temperature Effects on Performance
- Testing Standards and Methods
- Q&A Highlights
- Conclusion
Source: Würth Elektronik
