Dual winding shielded power inductor | High Current Power Inductor Manufacturer | Coilmaster Electronics
Manufacturer of SMD dual-winding shielded coupled inductor for high-efficiency SEPIC converters. This compact SMD coupled inductor integrates two windings within a single magnetically shielded structure, delivering both space savings and cost reduction compared to two separate inductors. The closed magnetic circuit minimizes leakage flux and EMI, making it ideal for noise-sensitive power architectures. Coilmaster Electronics is a high-current High Current Power Inductors, Automotive Grade Chokes & Inductors,High Frequency and Planar Transformers, LAN Magnetics (RJ45), Multilayer Chip Beads manufacturer from Taiwan since 1995. Coilmaster offers AEC-Q200 certified, high-efficiency power inductors, chokes, and transformers. Specializing in low-loss, high-current components for Automotive, 5G, and Industrial applications. Contact our experts for instant support. With more than 20 years of experience in magnetic territory, Coilmaster Electronics is specialized in the production of SMD power inductors, common mode choke, high frequency transformers.
Dual winding shielded power inductor
Shielded Coupled Inductors for SEPIC, Multi-Output DC-DC & Dual Inductor Designs
This compact SMD coupled inductor integrates two windings within a single magnetically shielded structure, delivering both space savings and cost reduction compared to two separate inductors. The closed magnetic circuit minimizes leakage flux and EMI, making it ideal for noise-sensitive power architectures.
Designed for high current density systems, our dual-winding structure supports flexible configuration (series, parallel, or coupled mode), ensuring precise inductance control, improved ripple performance, and optimized energy storage. With enhanced coupling characteristics and low leakage inductance, this device enables superior efficiency in SEPIC and multi-output DC-DC converters.
Why Choose a Coupled Inductor?
Compared to two discrete inductors, coupled inductors provide better ripple cancellation, higher efficiency under high di/dt operation, reduced PCB footprint, lower EMI, and improved transient responseāespecially in SEPIC and multi-mode topologies.
Key Technical Advantages
High coupling factor (optimized K value) reduces ripple current and core loss
Shielded drum + ring core structure suppresses EMI
Flexible dual-winding connection: series, parallel, isolation, or transformer mode
Works in both inductor mode (boost/coupled) and transformer mode (flyback/SEPIC)
Stable DC bias and low leakage inductance ensure predictable performance
Characteristic
Closed magnetic path reduces EMI and stray field
Constant DC superposition suitable for wide current ranges
Effective for SEPIC power topologies due to low leakage inductance
Functions as a 1:1 transformer, coupled inductor, or common mode choke
Features
- Magnetically shielded construction
- Dual-winding flexibility
- High coupling coefficient
- Low stray inductance
- Suitable for SEPIC and multi-output DC-DC
- RoHS + REACH + Halogen-Free
- -40Ā°C~125Ā°C (optional high-temperature range)
Applications
- Automotive Display Controllers (SEPIC for LED Backlight)
- Battery Management Systems (BMS) for balancing/isolation
- SEPIC converters for LED backlight, battery systems, and display controllers
- Multi-output DC-DC converters (parallel / serial mode)
- 1:1 transformer or isolation interface
| Image | name | Size(mm) | Inductance(uH) | Isat(A) | Irms(A) | DCR(mĪ©) | Action |
|---|---|---|---|---|---|---|---|
| 22uH, 7.57A SMD Shielded Coupled Power Inductor | 12.5x12.5x8.0 | 22 | 7.57 | 4 | 48.9 | |
|
| 33uH, 6.22A SMD Coupled Power Inductor | 12.5x12.5x8.0 | 33 | 6.22 | 3.23 | 75 | |
|
| 47uH, 5.28A SMD Coupled Inductor | 12.5x12.5x8.0 | 47 | 5.28 | 2.95 | 89.9 | |
|
| 68uH, 4.44A 12mm SMD Coupled Inductor | 12.5x12.5x8.0 | 68 | 4.44 | 2.44 | 131.3 | |
|
| 82uH, 4.06A SMD High K Factor Coupled Inductor | 12.5x12.5x8.0 | 82 | 4.06 | 2.09 | 178.8 | |
|
| 100uH, 3.64A SMD High K Factor Dual Winding Inductor | 12.5x12.5x8.0 | 100 | 3.64 | 1.96 | 203.8 | |
|
| 150uH, 3.01A SMD High K Factor Dual Winding Power Inductor | 12.5x12.5x8.0 | 150 | 3.01 | 1.59 | 308.8 | |
|
| 220uH, 2.43A SMD High K Factor Dual Winding Power Inductors | 12.5x12.5x8.0 | 220 | 2.43 | 1.29 | 470 | |
|
| 330uH, 2.01A SMD Two Winding Power Inductors | 12.5x12.5x8.0 | 330 | 2.01 | 1.04 | 717.5 | |
|
| 470uH, 1.68A SMD Two Winding Shielded Power Inductors | 12.5x12.5x8.0 | 470 | 1.68 | 0.85 | 1076.3 | |
|
| 680uH, 1.39A SMD Two Winding Shielded Inductors | 12.5x12.5x8.0 | 680 | 1.39 | 0.76 | 1350 | |
|
| 820uH, 1.27A SMD Coupled Shielded Inductors | 12.5x12.5x8.0 | 820 | 1.27 | 0.65 | 1837.6 |
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Dual winding shielded power inductor | High Current Power Inductor Manufacturer | Coilmaster Electronics
Located in Taiwan since 1995, Coilmaster Electronics Co., Ltd. has been a manufacturer of magnetic components. Its main magnetic components include, Dual winding shielded power inductor, common mode chokes, SMD molding power chokes, chock coil inductors, SMD shielded and semi-shielded power inductors, low profile and high current power inductors, high voltage power inductors, ethernet and LAN power transformers, flat wire inductors, RJ45 jacks with integrated magnetics and high frequency transformers, and ceramic or air coil multilayer chip inductors.
Coilmaster offers AEC-Q200 certified, high-efficiency power inductors, chokes, and transformers. Specializing in low-loss, high-current components for Automotive, 5G, and Industrial applications. Contact our experts for instant support. With more than 20 years of experience in magnetic territory, Coilmaster Electronics is specialized in the production of SMD power inductors, common mode choke, high frequency transformers.
Coilmaster Electronics has been providing customers with high current power inductors since 1995, with both advanced technology and 29 years of experience, Coilmaster Electronics ensures that each customer's requirements are met.