High-bandwidth nanocrystalline toroidal cores for EMI suppression

High-bandwidth nanocrystalline toroidal cores for EMI suppression.

With its unique nanocrystalline structure, the nanocrystalline core provides a solution for the power electronics industry that combines high performance, miniaturization, and high reliability. It is one of the fundamental materials supporting the development of industries such as new energy vehicles, renewable energy, and high-end power supplies.

Key Features

• Compared to conventional core materials like silicon steel and ferrite, nanocrystalline cores deliver several key advantages:

  Ultra-high permeability – up to 80,000, over 12 times that of Mn-Zn ferrite, enabling substantial size reduction of inductors under the same conditions.

  Extremely low core loss – only about one-third of ferrite at high frequencies. This is attributed to low hysteresis loss (due to fine nanocrystalline grains with low magnetization resistance) and low eddy current loss (due to high resistivity that effectively suppresses eddy currents).

  Excellent frequency and temperature stability – stable performance across 10 kHz to 5 MHz, with an operating range of -40°C to 180°C for reliable operation in harsh environments.

  High saturation flux density – Bs up to 1.2–1.25 T, far exceeding that of ferrite, allowing for higher current handling without saturation.

DC-Dias

Winding Specification

Material

Electrical Parameters

Target Applications

Our CD-Type Amorphous Inductors are engineered for high-performance, high-power filtering and power factor correction:

• E-Mobility: EV onboard chargers (OBC) & DC-DC converters.

• Renewable Energy: Photovoltaic (PV) inverters & grid-tied energy storage systems (ESS).

• Next-Gen Computing: AI servers & 5G telecommunications base station power supplies.

• Power Quality: High-power PFC (Power Factor Correction) circuits and industrial switching power supplies.

Why Partner With Us？

• Proven Industry Expertise: With over 20 years of industrial experience and a solid foundation established in 2013, we operate five major core industrial lines across multiple specialized manufacturing bases to ensure top-tier product scale and stability.

• Global Quality Certifications: Our facilities strictly adhere to international automotive and industrial standards, backed by a complete set of major credentials including IATF16949, ISO9001, ISO14001, ISO45001, and ISO50001.

• Strong R&D & Technical Innovation: Driven by dedicated research teams and specialized new-design laboratories, we possess extensive patent portfolios and advanced testing capabilities to provide highly reliable, customized magnetic solutions.

• Smart & Scalable Manufacturing: We leverage advanced ERP and MES-managed smart manufacturing systems to optimize production capacity, securing a highly dependable supply chain for international clients across the EU, US, and globally.

FAQ

Q1: What are the main advantages of an amorphous core inductor?

A1: Compared to traditional silicon steel, amorphous cores cut energy losses by 80% to 90%, meaning much less heat generation. They also handle higher currents while being only a fraction of the size of standard inductors.

Q2: What is the benefit of the CD-type split-core design?

A2: The CD-type split-core design allows us to easily adjust the air gap. This flexibility means we can precisely customize the electrical performance to match your exact circuit and ripple current needs.

Q3: Will these inductors cause audible buzzing or noise?

A3: No. Our amorphous alloy material eliminates high-frequency core "squealing" or humming. This near-silent operation makes them ideal for noise-sensitive applications like electric vehicles (EVs) and audio systems.

Q4: Can I request customized specifications for my project?

A4: Yes, we provide full custom design services. We can adjust the inductance, current ratings, wire specs, and physical dimensions to ensure the component fits your specific power system requirements.