How REDEXPERT® Helps Engineers Make Better Power Design Decisions

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• REDEXPERT helps engineers move beyond datasheet-based component selection by providing design tools, performance analysis capabilities, and application-specific resources for power electronics and EMC applications.

• The platform supports tasks such as power inductor selection, AC loss analysis, EMC filter design, thermal evaluation and component comparison to help engineers make more informed design decisions

• As an authorized Würth Elektronik distributor, McKinsey Electronics provides customers across the Middle East with access to Würth Elektronik solutions, local engineering expertise and technical design support.

Selecting the right passive components has always been a critical part of power electronics design. However, as systems become more compact, power densities increase and efficiency targets become more demanding, traditional component selection methods are often insufficient.

Datasheets remain essential, but they only tell part of the story. The real challenge is understanding how a component will behave within a specific application, under actual operating conditions and alongside the other elements of a design.

REDEXPERT is Würth Elektronik's online platform for component selection, comparison, simulation and design support. Developed specifically for engineers working with power electronics, EMC solutions and passive components, the platform helps users evaluate component performance before committing to hardware prototypes.

Moving Beyond Datasheet-Based Selection

When selecting a power inductor, engineers often begin by calculating the required inductance value based on system parameters such as input voltage, output voltage, switching frequency and ripple current.

While this provides a starting point, several important factors still need to be evaluated:

• AC losses

• DC losses

• Temperature rise

• Saturation behavior

• Efficiency impact

• Physical size constraints

A component that meets the required inductance value may not necessarily be the optimal choice once losses and thermal performance are considered.

REDEXPERT addresses this challenge by allowing engineers to enter application parameters and compare multiple component options based on their expected behavior within the intended operating environment. The platform can calculate inductance recommendations, estimate losses and evaluate thermal performance for candidate components.

Why Loss Analysis Matters

Power inductor losses are often more complex than they initially appear.

DC losses are primarily related to winding resistance, while AC losses are influenced by switching frequency, ripple current, duty cycle, core material, winding structure and magnetic design. These variables can significantly affect overall converter efficiency and component temperature.

One of the distinguishing aspects of REDEXPERT is its AC loss modelling approach. Rather than relying solely on traditional Steinmetz-based estimations, Würth Elektronik developed empirical loss models based on measurements performed in actual DC/DC converter environments. This approach allows engineers to evaluate losses under operating conditions that more closely resemble real applications.

The result is a more realistic understanding of how component choices may affect efficiency and thermal performance before hardware is built.

Supporting EMC-Oriented Design

Modern power electronics designs must satisfy both efficiency and electromagnetic compatibility requirements.

Filtering strategies, inductor selection and capacitor performance all influence EMC behavior. Small design decisions can affect conducted and radiated emissions, particularly in high-frequency switching applications.

REDEXPERT includes tools that assist with EMC-related component selection and filter design. The platform can recommend suitable topologies, evaluate insertion loss, and support engineers in selecting appropriate EMC components based on application requirements.

For engineers working on industrial, automotive, communications and embedded systems, this capability can help reduce development time while supporting compliance objectives.

Thermal Performance and Component Comparison

Thermal management remains one of the most important aspects of power electronics design.

Excessive component temperatures can reduce efficiency, affect reliability and shorten product lifespan. Understanding how different components respond to load conditions is therefore essential.

REDEXPERT allows engineers to compare power inductors based on temperature rise, rated current behavior and self-heating characteristics. The platform also includes tools for estimating how PCB copper dimensions influence current ratings and thermal performance.

This enables more informed trade-offs between size, efficiency, cost and reliability during the design phase.

Accelerating the Design Process

Engineering teams are increasingly expected to shorten development cycles without compromising performance.

Simulation tools cannot replace laboratory validation, but they can help identify promising design paths earlier in the development process. By reducing uncertainty during component selection and enabling faster comparison of alternatives, platforms such as REDEXPERT can help engineers move from concept to prototype more efficiently.

Instead of relying solely on theoretical calculations and iterative testing, engineers gain access to application-oriented data that supports more informed decision-making throughout the design cycle.

Supporting Engineers Across the Middle East, Africa and Türkiye

As an authorized Würth Elektronik distributor, McKinsey Electronics supports customers across the Middle East, Africa and Türkiye with access to Würth Elektronik's portfolio of passive components, EMC solutions, power magnetics and engineering resources.

Beyond component availability, our engineering team works closely with customers to support component selection, design-in activities and application-specific challenges throughout the development process.

To help engineers explore the capabilities of REDEXPERT in greater depth, McKinsey Electronics and Würth Elektronik will be hosting an exclusive technical webinar featuring a live demonstration of the platform, practical engineering examples and an interactive Q&A session with Würth Elektronik specialists.

Register today and discover how simulation-driven design can help improve component selection, optimize performance and accelerate product development.

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