Power Supplies

Power Electronics for Power Supplies

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Performance Range

The category of power supplies covers a wide range of power converters found in laboratory, medical, and industrial settings. They share the common trait of having a well-regulated voltage or current output specified directly by the user. Beyond this commonality, the electrical characteristics can vary widely based on end application. Medical imaging systems such as computed tomography (CT) scanners require high voltages generated across a transformer using low voltage semiconductors. Welding systems work in a similar manner but with the opposite output: high currents at low voltages. In both cases, high switching frequencies and advanced resonant topologies are common.

As a pure power converter, power supplies can be paired with higher- level system controllers to simulate solar arrays or batteries. The variety of form factors, from handheld units to rackmount or cabinet-sized enclosures requires a range of power modules in high-current, robust packages. The use of high frequencies and magnetics means power supplies also stand to benefit from silicon carbide.

Product Highlights

High Current Half-Bridges
in a Standard Package

From engineering test labs to hospital imaging centers, the SEMITRANS Classic is an industry standard workhorse for power supplies.

Thanks to the integration of the latest IGBT M7, the SEMITRANS 3 now carries a maximum current rating of 800A. This gives designers more freedom in sizing building blocks common to scalable power supply architectures such as solar simulators.

f higher frequency operation is required, the SEMITRANS is also offered with silicon carbide MOSFETs for an equivalent current rating of 500A (RDS(on) = 3.8mΩ).

With decades of experience producing 62mm packages, Semikron Danfoss continues to optimize this platform and ensure high quality production.

Key Features

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The New Building Block for
High Power Converters

Power converters in the megawatt range are typically constructed from converter blocks in the hundreds of kilowatts and by paralleling of power modules. At these high currents, the need for a low inductance package with balanced switching behavior is critical. The SEMITRANS 20 fulfills this requirement in a new,
industry standard form factor.

Key Features

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Semikron Danfoss Image Power Quality Hospital

Product Portfolio

IGBT and Rectifier Modules 



800V up to 2200V

Bipolar modules from the market leader


5kVA up to 100kVA

Exceeding the standard for superior performance

SEMiX® 3 Press-Fit

100kVA up to 300kVA

Exceeding the standard for superior performance


100kVA up to 600kVA

The proven power electronics packages

SEMITRANS® 10/10+/10 P3L

300kVA up to 1MVA

Robust high power modules


300kVA up to 1MVA

The new standard in high power

Intelligent Power Modules – IPMs

The Most Powerful IPM in the Market


The SKiiP IPM product line sets a benchmark for high performance and robust inverter designs. Both SKiiP 3 and SKiiP 4 feature high power densities combined with flexible cooling options such as air or water cooling, also with customized heatsinks. Reliable driver technology, integrated current sensors and comprehensive protection functions complete the IPM design.

SKiiP 3 has propagated widely through the industrial drive segment. With its sixpack or half-bridge topologies, it covers a current range from 500A up to 2400A.

The SKiiP 4, available in half-bridge topology, has been optimized for highest power cycling requirements and covers the higher power range up to 3600A.

To ensure highest reliability and service life, the power circuitry is 100% solder-free. Sinter technology as die attach replaces the solder layer, which usually causes the limitation in lifetime. Hence, sintering improves power and thermal cycling capability.

The integrated gate driver in the SKiiP 4 has set new standards in terms of reliability and enhanced functionality through its CAN interface. The digital driver guarantees safe isolation between the primary and secondary side for both switching signals and parameter measurement. The CAN interface allows setting the SKiiP 4 configuration parameter and reading application parameter.

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Power Electronic Stack Platforms

Fully Qualified Inverter Assemblies Tailored to Your Specific Needs

Standard Stacks

The Power Electronic Stacks enable our customers to succeed in dynamic markets and meet any global challenge. We deliver Rectifier-, IGBT- and SiC-based stacks for AC voltages from 380V to 690V. Our standard stacks cover an output current range from 70A to 4000A.

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Customized stacks

In addition to standard stacks, Semikron Danfoss has vast experience in developing customer-specific solutions. Engineers are available in our stack centers around the globe to offer specific solutions by adapting existing platforms or designing customized converters.

Four Key Factors for your success

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Semikron Danfoss Image Driver

Product Portfolio

IGBT Driver

The unique product portfolio enables access to all established industries with a one-stop solution that combines state-of-the-art power modules and driver electronics.

Our IGBT drivers are available as two- channel driver cores suitable for any standard semiconductor power module or as Plug-and-Play solutions, which perfectly fit the SEMiX 3 Press-Fit, SEMITRANS 10 and compatible modules.

Cost Efficient

Achieve outstanding system compactness and create space- and cost-effective inverter designs with our drivers, utilizing highly integrated ASIC technology. Isolated DC-link voltage and temperature sensor signals at the driver’s interface along with over-voltage and over-temperature lockout also help to reduce system costs significantly.

Time Efficient

More than 25 years of experience in developing innovative IGBT driver electronics enables Semikron Danfoss to have a short-term solution for almost every challenge related to driver electronics. Our Plug-and-Play drivers connect directly to most common standard IGBT modules. The IGBT driver cores fit with the adapter boards or application sample PCBs. For the latter, Semikron Danfoss shares the entire manufacturing data to decrease development time, speeding up the time-to-market.


Our SKYPER and SKHI are well-known, highly robust and reliable IGBT driver solutions under demanding environmental conditions. Over many years of field operation experience the proprietary IGBT driver technology has been relentlessly developed further. This technology sets new standards for the essential features of safe gate control, reliable gate protection and reinforced insulation.

Compact Design

Our SKIC ASIC technology enables very compact system design with minimal peripheral components. With highly integrated signal processing and multi-channel failure management, our ASICs offer robust gate control.

Key Factors

Driver Cores

Plug-and-Play Driver

Adapter Board and Application Samples

Semikron Danfoss Image Thermal Interface Materials

Thermal Interface Materials

Stay Cool – Heat Dissipation is Our Job


Semikron Danfoss was the first power module manufacturer on the market to offer power modules with pre-applied thermal interface material (TIM). We now have over two decades of experience and more than 25 million pre-printed modules in the field.

We design print patterns for each module type for the best TIM distribution and thickness when the module is mounted to a heatsink. These patterns are printed on the modules in a clean environment on an automated silkscreen and stencil printing line. Statistical process control (SPC) is used to guarantee consistency. Special packaging is implemented to ensure that the TIM arrives at your production line in pristine condition.

In order to achieve the best thermal performance in all applications, Semikron Danfoss power modules can be supplied with our High Performance Thermal Paste (HPTP).

Alternatively, for ease-of-handling during assembly, most power modules are also available with pre-applied phase change material (PCM). Phase change materials have a solid consistency at room temperature. With the application of heat during first operation, the PCM flows to fill gaps and provide a thermal interface. With HP-PCM, the new Semikron Danfoss-exclusive High Performance Phase Change Material, we combine the benefits of a phase change material with the performance of the best available paste.

Key Features


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Further Information