Showcasing a reduction in weight and volume for power electronics

Exxelia has announced its participation in the 55th edition of the International Paris Air Show (SIAE 2025), where the company will present its latest innovations designed to reduce weight and volume for power electronics in the aerospace, space, and defence sectors.

The company will focus on its innovations in smart integrated magnetics and MML film capacitors.

The company's smart integrated magnetics combine multiple functions (inductor and transformer) into a single, compact component, contributing to system miniaturisation and mass reduction. These components are designed to minimise losses, attaining efficiencies above 99% even at high operating frequencies (10kHz to 500kHz).

Their compatibility with advanced SiC and GaN semiconductors allows the design of more compact and lighter power converters. The technology provides a wide range of inductance values with a high accuracy. The integrated design contributes to a reduction in the total cost of ownership.

These components are suited for demanding applications such as electric or hybrid mobility (aerospace including eVTOLs), military/defence systems, electrical energy storage systems and smart grids, supporting power levels up to 300kW.

MML film capacitors are high-density, high-reliability solutions. The company's MML (miniature micro-layer) film capacitors deliver high performance for applications where size, mass, and reliability are paramount. These capacitors achieve an energy density up to four times higher, offering a size reduction of up to a factor of four compared to conventional film technologies, and are up to 90% lighter than equivalent MLCCs. These components are constructed with a non-inductive stacked metallised polymer film and are encapsulated for robust mechanical and environmental protection.

Qualified according to MIL-STD 202 and a qualified ESA assessment, MML capacitors are designed for high-reliability environments. They offer an open-circuit failure mode with self-healing properties, ensuring long-term operational integrity. They maintain stable performance over a wide operating temperature range, from -55C to +140C. The capacitance range varies from 100nF to 5000µF, and the voltage is up to 2000VDC. The company also delivers highly customisable MML solutions, including various case types (D, M, C series) and custom designs to optimise integration. These solutions also feature thermal heating monitoring with thermocouples and specific electrical characteristics tailored to meet unique application requirements.

MML capacitors are utilised in critical applications, including power converters, energy management systems, payloads, telemetry, flight controls, charge/discharge circuits, generators, and electric motors. They are tested to meet various environmental and durability standards, including humidity (MIL-STD-202 Method 103), barometric pressure (Method 105), thermal shock (Method 107), and life test (Method 108).

Visitors to the company's booth 2B - E106 at SIAE 2025 will have the opportunity to engage directly with the company's team of experts.