Power Inductor Manufacturer
Reliable inductors for power conversion, energy storage and current regulation.
Conversion
Storage
Regulation
Applications
Magno Teknik manufactures power inductors for power conversion, energy storage, current regulation, and filtering applications. Our power inductor range includes SMD, shielded, high-current, drum-core, and other constructions designed for different electrical, thermal, and mechanical requirements. Engineers can select a suitable power inductor based on inductance, tolerance, saturation current, RMS current, DCR, operating temperature, switching frequency, and package dimensions. This page provides an overview of Magno Teknik power inductors, including their key specifications, applications, selection considerations, and available product options.
Power Inductors for Power Electronics
Power inductors are magnetic components used to store energy, control current, and reduce current ripple in power electronic circuits. They are commonly used in switching regulators, DC-DC converters, LED drivers, power supplies, battery-powered equipment, and filtering applications.
The required inductor characteristics depend on the electrical and mechanical requirements of the circuit. Inductance alone is not sufficient for component selection. Engineers should also evaluate saturation current, RMS or rated current, DCR, temperature rise, operating temperature, frequency characteristics, dimensions, and the manufacturer’s test conditions.
Magno Teknik provides power-inductor solutions for different current levels, package requirements, circuit topologies, and application conditions.
Power Inductor Types
Different power-inductor constructions provide different electrical, magnetic, thermal, and mechanical characteristics. The appropriate construction depends on the circuit design, current level, operating frequency, EMI requirements, and available PCB space.
SMD Power Inductors
SMD power inductors are designed for surface-mount PCB assembly and are commonly used where compact dimensions and automated manufacturing are required.
They can be used in applications such as DC-DC converters, voltage regulators, LED drivers, power supplies, and other switching circuits.
Shielded Power Inductors
Shielded power inductors are constructed to provide greater control of the external magnetic field compared with conventional unshielded constructions. This can be important in compact PCB layouts where magnetic coupling between components needs to be considered.
Selection should still be based on inductance, current, DCR, temperature rise, frequency, package dimensions, and the actual circuit requirements.
High Current Power Inductors
High-current power inductors are designed for power-conversion applications where the inductor must carry relatively high current while maintaining the required inductance, temperature performance, and electrical stability. They are commonly used in DC-DC converters, voltage regulators, power supplies, LED drivers, and other circuits with significant current demand.
When selecting a high-current power inductor, engineers should consider:
- Saturation current (Isat) — determines how much current the inductor can handle before its inductance decreases significantly.
- RMS or rated current — indicates the current level associated with the specified thermal or temperature-rise limit.
- DCR — affects copper loss and contributes to power dissipation and temperature rise.
- Inductance under DC bias — shows how the inductance changes as operating current increases.
- Temperature rise — helps determine thermal performance under continuous operation.
- Operating temperature — defines the allowable environmental and component temperature range.
- Package dimensions — must meet the PCB space, height, and mechanical requirements of the application.
Drum Core Inductors
Drum core inductors use a drum-shaped magnetic core with a winding around the core structure. They are used in power conversion, filtering, energy-storage, and other electronic circuits.
The required component should be selected according to inductance, current capability, DCR, saturation characteristics, frequency, temperature, and mounting requirements.
Toroidal Power Inductors
Toroidal power inductors use a ring-shaped magnetic core with the winding distributed around the magnetic path. Their construction provides a closed magnetic circuit, which can influence external magnetic-field behavior.
The selection of a toroidal inductor depends on inductance, current, core characteristics, winding resistance, temperature rise, frequency, and mechanical requirements.
Power Inductor Specifications
| Specification | Why It Matters |
|---|---|
| Inductance | Determines the inductor’s response to current change and energy storage |
| Inductance Tolerance | Defines the allowable variation from the nominal value |
| Saturation Current (Isat) | Indicates the current associated with a specified reduction in inductance |
| RMS / Rated Current | Indicates current capability under specified thermal conditions |
| DCR | Determines winding-related DC power loss and voltage drop |
| Temperature Rise | Indicates the increase in component temperature under specified conditions |
| Operating Temperature | Defines the permitted component temperature range |
| DC Bias | Shows how inductance changes as DC current increases |
| Switching Frequency | Affects core loss, winding loss, impedance, and component performance |
| Dimensions | Determines PCB footprint, height, and mechanical compatibility |
Why Inductance Alone Is Not Enough
A power inductor with the required nominal inductance may still be unsuitable if its saturation current, RMS current, DCR, thermal capability, or operating-temperature range does not meet the circuit requirements.
For this reason, component selection should consider the complete datasheet rather than comparing inductance values alone.