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Amorphous cores are ideal for high-frequency, high-power PFC (Power Factor Correction) inductors, offering superior efficiency due to high saturation flux density (~
), low core losses, and excellent stability over a wide temperature range (
to
). These cores allow for smaller, lighter, and cooler-running inductors compared to ferrite or iron powder, making them perfect for 300W–6kW+ UPS, SMPS, and inverter applications.
Key Advantages of Amorphous Cores for PFC
- High Efficiency: Lower core loss and high electrical resistivity minimize eddy currents and heat generation.
- High Saturation (): Fe-based amorphous materials reach, enabling higher power handling and smaller component sizes compared to ferrites.
- Excellent Thermal Stability: Curie temperatures up to maintain stable inductance with less thanvariation over a wide temperature range.
- Reduced Noise: Low magnetostriction reduces audible noise.
Key Considerations in Design
- Core Type: Available as cut (C-shape) cores for easy winding or as gapped toroids, which reduce EMC concerns from stray fields.
- Material Properties: High permeability (>at 100kHz) requires proper gapping to maintain stable inductance under high DC bias.
- Applications: Ideal for continuous-mode boost pre-regulators, UPS systems, and solar/wind inverters.
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Web results
Amorphous Cut Cores for PFC Chokes and Inductors
Mag Inc.
https://www.mag-inc.com › Tape-Wound-Cores › Amo...
Mag Inc.
https://www.mag-inc.com › Tape-Wound-Cores › Amo...
Amorphous cut cores are a choice solution for high frequency, low loss applications such as uninterruptible power supplies (UPS), SMPS power factor correction ...Read more
Amorphous Metal Core & Nanocrystalline Core
Hill Technical Sales
https://www.hilltech.com › products › power_components
Hill Technical Sales
https://www.hilltech.com › products › power_components
Amorphous magnetic cores allow smaller, lighter and more energy efficient designs in many high frequency applications for Invertors, UPS, ASD (Adjustable speed ...Read more
Amorphous Core Power Inductors – High-Efficiency Solutions
Bridgeport Magnetics
https://bridgeportmagnetics.com › amorphous-core-po...
Bridgeport Magnetics
https://bridgeportmagnetics.com › amorphous-core-po...
The inductors combine high inductance and current values with low losses at frequencies in the 20kHz range. High wattage switching devices benefit from compact, ...Read more
Amorphous Core for Power Factor Correction (PFC) Inductors
amorphousoem.com
https://www.amorphousoem.com › Application
amorphousoem.com
https://www.amorphousoem.com › Application
The amorphous cores provide significant advantages in terms of low core loss, high permeability, and excellent frequency characteristics, making them ideal for ...Read more
Amorphous Core Inductor Design for Power Factor Correction
transmart.net
https://www.transmart.net › a-news-amorphous-core-in...
transmart.net
https://www.transmart.net › a-news-amorphous-core-in...
Dec 14, 2023 — One of the key components used in PFC circuits is the amorphous core inductor, known for its superior magnetic properties and high efficiency.Read more
Amorphous Cores
Hilltech Sales Corporation
https://hill-tech.com › products › amorphous-cores
Hilltech Sales Corporation
https://hill-tech.com › products › amorphous-cores
These cores are ideal candidates for PFC boost inductor applications in power supply ranges from 300 to 6kW (for higher power design see Powerlite). Microlite ...Read more
Inductor design using amorphous metal C-cores
IEEE
https://ieeexplore.ieee.org › document
IEEE
https://ieeexplore.ieee.org › document
by JW McLean1996Cited by 22 — A method for correcting power factor that helps reduce cost, size, and weight involves using amorphous metal C-cores as the inductive element of power-factor- ...Read more
Benefits and Limitations of Amorphous Core for APFC ...
Passive Components Blog
https://passive-components.eu › potential-benefits-and-l...
Passive Components Blog
https://passive-components.eu › potential-benefits-and-l...
Jul 29, 2024 — This presentation is entitled possible benefits of a morphal core for active power factor correction inductors.
PFC Toroidal Core Fe-Based Amorphous Inductor Filter Cores
catechcore.com
https://www.catechcore.com › Prouduct › Toroidal Core
catechcore.com
https://www.catechcore.com › Prouduct › Toroidal Core
Fe-based amorphous inductor filter cores show good frequency properties, high stable inductance with various DC bias current, low loss, wide permeability range.Read more
Amorphous Toroidal Inductor Filter Core
CB Technology Industrial Co., Limited
https://www.custom-magnetics.com › products › amorp...
CB Technology Industrial Co., Limited
https://www.custom-magnetics.com › products › amorp...
Suitable for PFC Circuit and Boost/Buck Converter, Amorphous core performs lower coercivity, lower core loss, higher permeability than other materials ...