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    AI Overview

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    AI Overview
    High-permeability cores for On-Board Chargers (OBC) in electric vehicles—such as
    nanocrystalline, MnZn ferrite, and Sendust (Kool Mµ)—reduce component size while maximizing efficiency and noise suppression. These materials offer high inductance with fewer turns, essential for high-frequency PFC and EMC filtering at temperatures up to 200°C. 
    Top High-Permeability Core Solutions for OBC: 
    • Nanocrystalline Cores: Offer the highest permeability (often >30,000
      μmu
      𝜇
      ), low coercivity, and very low core loss, ideal for compact, high-efficiency noise suppression in OBC.
    • MnZn Ferrites: High permeability (
      >10
      ,
      000
      𝜇
      ) with good temperature stability, often used in SMPS and transformers.
    • Powder Cores (High Flux, Kool Mµ, XFlux): Offer a "distributed air gap" for excellent DC bias stability and high saturation, reducing the risk of saturation at high currents.
    • Edge® Cores: Used for smallest package sizes in high-frequency, current-limited power inductors. 
    Key Selection Criteria for OBC: 
    • Frequency: High frequencies (>1 MHz) often require specialized, low-loss materials.
    • Saturation Flux Density (
      Bsatcap B sub s a t end-sub
      𝐵𝑠𝑎𝑡
      ):       High Flux or XFlux cores provide high saturation levels necessary for power factor correction (PFC).
    • Temperature Stability: High Curie Temperature materials (
      >180∘Cis greater than 180 raised to the composed with power C
      >180∘C
      ) are necessary to maintain properties in harsh EV environments.       
    Common Material Options: 
    • Chemi-Con FW Common Mode Coils: Utilize high-permeability (31,000
      μmu
      𝜇
      ) iron-based nanocrystalline alloy.
    • Samwha SM-70T/85T/100T: High-permeability ferrites designed for high-temperature EV filters.
    • Magnetics Inc. Kool Mµ MAX: Ideal for inductors, offering high permeability and low loss. 
    • Onboard Charger (OBC) Applications - Chemi-Con | Mouser
      Nov 6, 2023 — FW Common Mode Coils The FW series is ideal for AC/DC noise filters in OBCs. An iron-based nanocrystalline alloy is used for the h...
      Mouser Electronics Österreich
    • High Permeability Core | MK Magnetics, Inc.
      Nov 3, 2025 — High permeability cores have several benefits, including: * Reduced size and weight * Improved efficiency in transformers and indu...
      MK Magnetics, Inc.
    • Designing with Magnetic Cores at High Temperatures - Mag-Inc
      These cores are available in toroids, E cores, U cores, EER cores, EQ cores, LP cores, and blocks. Toroids are epoxy coated and br...
      Mag-Inc
    • Ferrite and Powder Cores in EVs and (P)HEVs
      SM-43T : Higher permeability and insensitive to temperature changes. SM-43T with permeability of 4300 can be a good choice if you ...
      삼화콘덴서그룹
    • Magnetics - News - Mag-Inc
      Feb 25, 2026 — August 2023. ... Magnetics now offers nanocrystalline cores for magnetic amplifiers! Magnetic amplifiers, also known as mag-amps, ...
      Mag-Inc
    • Onboard Charger (OBC) Applications - Chemi-Con | Mouser
      Nov 7, 2023 — The DM coil series serves as a step-up coil for the PFC (continuous current mode) of OBC applications. The high flux core features...
      Mouser Electronics
    • Designing with Magnetic Cores at High Temperatures - Mag Inc.
      Permeability vs. Temperature. The inductance shift with changing temperature in the powder cores is relatively small. This is larg...
      Mag Inc.
    • Magnetics Announced New XFlux Ultra Magnetic Powder Cores
      May 3, 2023 — With this new product, Magnetics has enhanced its lineup to offer greater versatility, reliability, and performance, while adherin...
      Passive Components Blog
    • Core Materials for >1MHz - Micrometals
      Both ‐34 & ‐35 Materials have good linearity with high bias. ‐38 Material: Similar to the ‐26 Material with higher permeability. ‐...
      Micrometals
    • Powder Cores｜China Magnetic Material Core - Pourleroi
      1. High magnetic permeability and low core loss improve the efficiency of magnetic devices; 2. Excellent temperature stability ens...
      Pourleroi
    • Onboard Charger (OBC) Applications - Chemi-Con | Mouser
      Nov 6, 2023 — FW Common Mode Coils The FW series is ideal for AC/DC noise filters in OBCs. An iron-based nanocrystalline alloy is used for the h...
      Mouser Electronics Österreich
    • High Permeability Core | MK Magnetics, Inc.
      Nov 3, 2025 — High permeability cores have several benefits, including: * Reduced size and weight * Improved efficiency in transformers and indu...
      MK Magnetics, Inc.
    • Designing with Magnetic Cores at High Temperatures - Mag-Inc
      These cores are available in toroids, E cores, U cores, EER cores, EQ cores, LP cores, and blocks. Toroids are epoxy coated and br...
      Mag-Inc
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    My Ad Center

    Chemi-Con Onboard Charger (OBC) Applications


    Mouser Electronics
    https://www.mouser.com › new › chemi-con-obc-applic...
    Mouser Electronics
    https://www.mouser.com › new › chemi-con-obc-applic...
    Nov 7, 2023 — An iron-based nanocrystalline alloy is used for the high magnetic permeability core (31,000µ). This construction enables high inductance ...Read more

    Designing with Magnetic Cores at High Temperatures


    Mag Inc.
    https://www.mag-inc.com › design › design-guides › de...
    Mag Inc.
    https://www.mag-inc.com › design › design-guides › de...
    Applications include high efficiency uninterruptible power supplies (UPS), high power SMPS, and power factor correction (PFC) for on-board chargers (OBC).Read more

    Ultra-High Permeability Nanocrystalline Soft Magnetic Cores


    yadootranscore.com
    https://www.yadootranscore.com › nanocrystalline-core-...
    yadootranscore.com
    https://www.yadootranscore.com › nanocrystalline-core-...
    The nanocrystalline core handles high magnetic fields without saturation, ensuring stable performance in high-power inductive components like motor drives and ...Read more

    High Permeability Core Materials


    MK Magnetics, Inc.
    https://www.mkmagnetics.com › products › high-perme...
    MK Magnetics, Inc.
    https://www.mkmagnetics.com › products › high-perme...
    High permeability allows magnetic flux to pass through the core material with less resistance, leading to lower losses and better efficiency. MK Magnetics, Inc.Read more
    Missing: OBC ‎| Show results with: OBC

    Magnetics Announced New XFlux Ultra Magnetic Powder ...


    Passive Components Blog
    https://passive-components.eu › magnetics-announced-...
    Passive Components Blog
    https://passive-components.eu › magnetics-announced-...
    May 3, 2023 — Meanwhile, Magnetics' manganese zinc ferrite cores have low coercivity, low losses at high frequencies, high permeability, and good temperature ...Read more

    Ferrite and Powder Cores in EVs and (P)HEVs


    삼화콘덴서그룹
    http://www.samwha.co.kr › electronics › down › F...
    삼화콘덴서그룹
    http://www.samwha.co.kr › electronics › down › F...
    PDF
    The high curie temperature and high permeability materials produced by Samwha Electronics are designed to exhibit performance up to 145~180 degree Celsius ...Read more
    20 pages

    OEM OBC Core, OBC Core Manufacturer


    amorphousoem.com
    https://www.amorphousoem.com › tag › obc-core
    amorphousoem.com
    https://www.amorphousoem.com › tag › obc-core
    Engineered for automotive EV/HEV applications, this high-performance Nanocrystalline core delivers superior EMI suppression for On-Board Chargers (OBC) and ...

    Powder Cores｜China Magnetic Material Core


    Pourleroi
    https://www.pourleroi.com › Products › Powder Cores
    Pourleroi
    https://www.pourleroi.com › Products › Powder Cores
    1. High magnetic permeability and low core loss improve the efficiency of magnetic devices;. 2. Excellent temperature stability ensures stable performance over ...Read more

    Comparison of Permeability Test at OBC


    ResearchGate
    https://www.researchgate.net › figure › Comparison-of-...
    ResearchGate
    https://www.researchgate.net › figure › Comparison-of-...
    High-air voids have generally been the main indicator of permeable hot asphalt concrete in the work that has been done. The prediction of the field permeability ...Read more

    Core Materials for >1MHz


    Micrometals
    https://www.micrometals.com › products › core-materials...
    Micrometals
    https://www.micrometals.com › products › core-materials...
    ‐45 Material: The highest permeability iron powder material available. Consider as a high perm alternate to the ‐52 Material with slightly higher core losses. ‐ ...Read more
    Missing: OBC ‎| Show results with: OBC
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