High Power Density Inductors for Automotive Power Electronics

The WE-MXGA is a magnetically shielded Surface Mount Technology (SMT) storage inductor designed for high-frequency switch-mode power supplies in the automotive data ecosystem. This component addresses the thermal and efficiency requirements of modern power electronics, specifically for applications utilizing Gallium Nitride (GaN) and Silicon Carbide (SiC) transistor technologies.

Technical Optimization and Material Composition
The relevance of this inductor series stems from its core architecture and wire geometry. By utilizing an innovative pressed nanocrystalline powder core material, the component achieves higher magnetic flux density while minimizing core losses compared to traditional manganese-zinc or nickel-zinc ferrites. Technical benchmarks indicate that this construction allows for RDC values up to 25% lower and saturation currents up to 47% higher than existing market alternatives in comparable form factors.

These performance metrics are critical for maintaining stability in high-current environments. The increased saturation current ensures the inductor maintains its specified inductance during transient peaks, preventing circuit instability in sensitive automotive modules.

Application Areas and Industry Standards
The series is qualified under the AEC-Q200 standard, making it suitable for rigorous automotive environments. Primary application areas include DC/DC converters for 48V/12V electrical systems, Advanced Driver Assistance Systems (ADAS) modules, and LED headlight control units. Furthermore, the high power density supports the requirements of infotainment systems and battery management systems within the digital supply chain of electric vehicle manufacturing.

The inductor's high-frequency capability is specifically tuned for switching regulators. In these contexts, the low AC and DC losses contribute to overall system efficiency, reducing the heat dissipation requirements for compact electronic control units (ECUs).

Specifications and Mechanical Profiles
The WE-MXGA is available in two standardized form factors to accommodate varying PCB density requirements:

The components support a current capability of up to 28 A and are rated for operating voltages up to 80 VDC. To ensure reliability across global climates and engine compartment conditions, the inductors are rated for an operating temperature range of -40 °C to +125 °C. These units are currently available for integration into automotive power stages and high-density power converters.

Edited by Evgeny Churilov, Induportals Media - Adapted by AI.

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