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DNH-High Flux Cores Series

High Flux Cores for High Power, High Bias Applications

High flux magnetic cores are designed for demanding applications that require high power density, strong DC bias performance, and low loss across a wide frequency range. POURLEROI supplies customized high flux cores to OEMs and power system developers in energy, automotive, telecom, and industrial sectors.

What Are High Flux Cores?

High flux cores are iron-nickel-based magnetic components engineered for high-performance power electronics. With a saturation flux density of up to 15,000 Gauss—twice that of MPP and over three times higher than ferrite—high flux cores can handle significantly higher DC bias or AC magnetic flux without saturation. These distributed gap cores provide excellent energy storage and minimal inductance drop, making them ideal for high-current environments where ferrites fail to maintain magnetic stability.

Product Overview

POURLEROI’s high flux cores are made from alloy powders with high nickel content, precision compacted and coated for thermal, mechanical, and electrical durability. These cores are available in various geometries including toroids, blocks, and custom shapes with epoxy or polyester insulation coatings.

Our high flux cores feature low core loss and high permeability, enabling them to operate efficiently in power conversion systems that experience strong bias currents. Applications include switching regulators, flyback transformers, series-mode noise filters, pulse transformers, and power factor correction (PFC) circuits.

Thanks to their high saturation flux density, high flux cores support compact inductor designs without sacrificing inductance. With ISO9001-certified processes, AL value control, and full traceability, POURLEROI ensures performance consistency from prototyping through high-volume production.

Why Choose POURLEROI as Your High Flux Core Supplier?

POURLEROI offers over 15 years of experience in advanced magnetic core manufacturing, with full customization services for high flux cores used in mission-critical power systems. We support tailored material selection, custom geometries, AL tuning, and various coating options to match specific engineering requirements.

All cores undergo rigorous testing for thermal stability, core loss, and inductance accuracy. We work directly with your engineering team to optimize magnetic design for PFC, SMPS, EV onboard chargers, and industrial power modules. With reliable lead times, global compliance (RoHS/REACH), and responsive technical support, POURLEROI is your trusted high flux core partner.

Applications of POURLEROI High Flux Cores

High flux cores from POURLEROI are widely used in high-current and high-frequency power electronics where compact size and thermal performance are critical. In power factor correction (PFC) circuits, their high saturation flux enables smaller inductors that handle strong ripple current without loss of efficiency. For switching power supplies and flyback transformers, high flux cores offer reduced core loss and excellent AC flux handling at high switching frequencies.

These cores are also applied in pulse transformers and series-mode EMI filters, where high energy transfer and magnetic stability are essential under dynamic loads. In electric vehicles and renewable energy systems, POURLEROI’s high flux cores help designers minimize size while maximizing performance in space-constrained power modules. Whether for telecom DC/DC converters or industrial motor drives, our high flux cores deliver robust magnetic performance in the most demanding environments.

  • Benefits of High Flux Cores

    High Magnetic Permeability: High Flux Cores possess high magnetic permeability, which allows them to transmit more magnetic flux under the same magnetic field strength. This makes them ideal for applications that require efficient energy transfer.

    Low Magnetic Losses: Compared to traditional silicon steel or ferrite materials, High Flux Cores exhibit lower magnetic losses at high frequencies. This reduces energy wastage and enhances overall system efficiency.

    High Saturation Flux Density: These materials have a higher saturation flux density, often 2-3 times that of ferrites. This means they can operate at higher magnetic flux densities without reaching saturation, supporting higher power density designs.

    Temperature Stability: High Flux Cores maintain stable magnetic properties over a wide temperature range, making them suitable for various industrial and commercial environments.

  • Applications of High Flux Cores

    Power Transformers: In switch-mode power supplies (SMPS), High Flux Cores improve transformer efficiency and power density, reducing size and weight.

    Inductors: Used in high-frequency circuits, High Flux Core materials effectively reduce inductor size and losses, enhancing overall circuit performance.

    Power Factor Correction (PFC) Circuits: In PFC circuits, High Flux Core materials optimize the phase relationship between current and voltage, improving power factor and efficiency.

    Electric Vehicles (EV) and Renewable Energy: In power electronics for electric vehicles and renewable energy systems, High Flux Core materials enhance conversion efficiency and system reliability.

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