New champstech.com is live
A complete bilingual catalog of planar transformers, planar inductors and off-the-shelf SMT transformers.
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UY38 PSFB Series — full data sheet online
Phase-shift full-bridge planar transformer — specification, mechanical drawings and downloadable data sheet.
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Planar transformers — 25 W to 1 kW+
Ultra-low-profile planar magnetics, 7–8.5 mm, engineered for high-density DC-DC conversion.
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Railway power
Isolated DC-DC and auxiliary supplies for rolling stock.
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EV power conversion
On-board and off-board conversion around battery-electric platforms.
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EV production
Magnetics for traction, charging and DC-DC stages in electric vehicles.
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Platform integration
Low-profile parts that fit tight packaging envelopes.
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Built for repeatability
Machine-wound planar windings with tight tolerance control.
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PCB winding technology
Planar windings wound directly into the printed circuit board.
Read moreLow-profile planar magnetics,
engineered for power density
Champs Technologies designs and manufactures low-profile, high-efficiency planar transformers and magnetics — solving size, weight and performance (SWaP) challenges across DC-DC converters, telecom, industrial, railway and PoE.
The planar advantage
Planar construction replaces bulky wire-wound magnetics with a flat, low-aspect-ratio package — delivering measurable gains in density, efficiency and reliability.
Planar magnetics for every power stage
From standard planar transformers to application-specific reference designs — built to your spec, delivered to your timeline.
10-50 Watt
The smallest band in the Planar Magnetics range. Typical applications are Power over Ethernet, telecom line cards, isolated gate drive and industrial DC-DC converters.
30-80 Watt
PoE+, telecom and industrial DC-DC, gate drive and compact isolated supplies.
50-150 Watt
Telecom and industrial DC-DC, PoE++, battery chargers and small isolated supplies.
100-250 Watt
Industrial and telecom DC-DC, motor-drive auxiliaries and battery chargers.
250-600 Watt
Industrial, telecom and railway DC-DC, and higher-current brick converters.
500-1500 Watt
Railway, industrial and telecom supplies with high-current, low-voltage outputs.
2-5 KWatt
High-power railway auxiliary, industrial power and high-power DC-DC conversion.
5-20 KWatt
High-power industrial and railway converters, EV and energy-storage systems.
20K+ Watt
Very high power conversion: EV fast charging, energy storage and heavy industrial power.
100K+ Watt
The highest power band in the range. Send us your requirements and our engineering team will confirm what we can build.
5 to 15W
Low power · Low profile · High efficiency · Excellent repeatability
25 to 140W
Low power · Low profile · High efficiency · Excellent repeatability
1kW to 10kW
High power · Low profile · Unique insulation · High efficiency
Common Mode Choke
Effective & compact · Low profile · Low leakage flux · High impedance
40W SMT Transformer
Up to 40 W · Forward with resonant reset or active clamp · 18.8 × 15.2 mm
100W SMT Transformer
Up to 100 W · Forward with resonant reset or active clamp · 23.5 × 20.1 mm
140W SMT Transformer
Up to 140 W · 8.6–9.7 mm max · 24.0 × 20.0 mm max
350W SMT Transformer
Up to 350 W · 18–36 Vdc or 36–72 Vdc · 30.0 × 25.0 mm
Active Clamp Forward
20N1 · G45 · G45AH2 · G45R2 — four series, 9–72 Vin, 30–240 W
Planar DC-DC Flyback
No-opto BCM / CCM flyback, 7–8.5 mm height
Planar AC-Offline Flyback
Wide-Vin offline flyback and bias supplies
Planar Phase-Shift Full Bridge
UY38 · ER80 · R41 series, 100 W – 3 kW
Planar LLC Converter
Resonant LLC magnetics
Planar DAB Converter
Dual active bridge magnetics
Planar “Flex” Configurable
Configurable winding arrangements
Embedded Planar DC-DC Modules
Planar windings embedded in the main PCB
Analog Devices® / Linear Technology®
Champs PNs, reference designs & demo boards
Ref Designs & Demo Boards
DC1317A · DC1929A · DC2393A · DC2014A and more
Microchip® Ref Designs
Champs PNs, reference designs & demo boards
Texas Instruments®
Comprehensive master list
ON Semiconductor®
Comprehensive master list
Maxim Integrated®
Comprehensive master list
Master Ref Design Page
Texas Instruments® | ON Semiconductor® | Maxim Integrated® | Comprehensive
Product Locator Tool
Enter your topology, input/output voltage and power — the locator lists the Champs planar series that fit, each with its data sheet.
Open the locator →Need a custom magnetics solution?
Tell us your spec — our engineers design and sample a planar magnetics solution around your exact requirements.
Request a custom design →Custom magnetics, engineered to your spec
As a direct OEM planar manufacturer since 1992, we design, prototype and mass-produce planar magnetics around your exact electrical, mechanical and thermal requirements.
Request a Custom DesignDesign
We turn your spec into an optimized planar magnetics design.
Prototype
Rapid sampling so you can validate performance fast.
Production
Scalable manufacturing with consistent, ISO 9001 quality.
Where our magnetics are used
Champs components power DC-DC converters and power supplies across demanding industries worldwide.
DC-DC Converters
Isolated and non-isolated converters for telecom and datacom infrastructure.
Industrial Power
Robust power supplies for industrial automation and control systems.
Railway & Transit
Wide-input magnetics for rail and transportation power systems.
Power over Ethernet
Compact flyback magnetics for PoE switches, injectors and powered devices.
Three decades of planar magnetics expertise
Founded in 1992, Champs Technologies is a manufacturer and developer of high-efficiency, low-profile planar magnetics for the European, North & South American, and Asian markets.
As a direct OEM planar manufacturer and supplier to DC-DC converter manufacturers, Champs has built a solid reputation across the power magnetics market — delivering the right solution for every power need.
ISO 9001:2015 Certified
Ensuring consistent, reliable magnetics manufacturing from design through delivery.
Let's build your power solution
Reach our Taiwan factory or USA office — our engineering team responds quickly.