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The T/27 toroidal inductor is a high-efficiency magnetic component engineered for Electric Vehicle (EV) charger circuits and other power electronics. Its toroidal (doughnut-shaped) core design minimizes electromagnetic interference (EMI) and ensures excellent magnetic flux containment, making it ideal for compact, high-frequency applications.

With an inner diameter of 14mm and a height of 11mm, the T/27 is typically panel-mounted and built to comply with IEC 61558 safety standards. It operates efficiently at 50Hz and is commonly used in EMI/RFI filtering, DC-DC converters, and power factor correction (PFC) stages of EV chargers.

Designed with low core loss ferrite material and precision copper windings, it supports high current handling with minimal temperature rise. Its RoHS compliance and customizable inductance values make it a versatile choice for both residential and commercial EV charging systems.

🌀 Sendust Toroidal Inductor

Overview

The Sendust toroidal inductor is a high-performance magnetic component designed for power electronics applications requiring low core loss, high saturation capability, and excellent thermal stability. Made from Sendust alloy (Fe–Si–Al), it offers superior performance compared to traditional powdered iron cores, making it ideal for EV chargers, SMPS, inverters, and power factor correction (PFC) circuits.

Key Features

• Core Material: Sendust alloy (Fe–Si–Al) with distributed air gap.
• Geometry: Toroidal shape for minimal leakage flux and compact design.
• Applications: EV chargers, DC/DC converters, PFC chokes, output filters, and renewable energy systems.
• Design Benefits:

• Low core loss at high switching frequencies.
• High saturation flux density (~1 Tesla) for handling peak currents.
• Stable inductance across wide current ranges.
• Excellent thermal performance with low temperature rise.

Electrical Characteristics (Typical)

• Inductance Range: Customizable from a few µH to several mH depending on winding.
• Current Rating: Supports high RMS and peak currents with minimal saturation.
• Operating Frequency: Optimized for 20 kHz – 200 kHz switching.
• Efficiency: Helps achieve >95% efficiency in well-designed circuits.
• EMI Performance: Toroidal geometry reduces stray fields, minimizing electromagnetic interference.

Mechanical Details

• Core Shape: Toroidal, ensuring uniform flux distribution.
• Winding Options: Suitable for copper wire, multi-strand, or Litz wire to reduce AC losses.
• Mounting: Compact design for PCB or chassis mounting.
• Finish: Smooth surface with protective coating for durability.

Advantages in EV Charger & Power Electronics

• High saturation capability allows robust performance under surge currents.
• Distributed air gap ensures low audible noise and stable inductance.
• Toroidal geometry minimizes leakage flux, improving EMI compliance.
• Long service life with reliable thermal cycling performance.