Phase leg module


Half-bridge power module

Power electronic building block

  • – V/I Sensors outputs (analog)
  • – Gate drivers inputs (optical)
  • – Fault output
  • – Board-to-board link
  • – Power supply (5/12 V)
  • – Cooling fan (120 W)
  • – DC link terminals
  • – Power switches (2x IGBTs, Silicon)

Silicon IGBT phase-leg for powerful inverters and low-voltage applications

PEB4050 phase leg modules contain two Silicon IGBTs power semiconductors as well as gate drive and current/voltage measurements.

They are ideal for building grid-tied inverters under 110VAC voltage but are also applicable to all sorts of power converter topologies.

Notably, thanks to their high current ratings, PEB4050 power modules can be very helpful with battery charging and related DC applications.

Similar power modules

400V/50A IGBT power module
DC voltage400V
Output current50A (RMS)
SemiconductorsSilicon IGBTs
typical power4-8 kVA
your price

Alternative parts

Ready-to-use IGBT phase-leg

Embedded features

The new IGBT-based PEB4050 power modules are truly ready-to-use power electronic building blocks featuring:

  •  IGBT phase-leg (two power semiconductors)
  •  DC bus capacitors
  •  Current and voltage sensors (usable simultaneously)
  •  Integrated gate drivers
  •  Onboard logic and protection (desaturation, voltage, current, temperature, PSU)
  •  Speed regulated cooling fan (120 W TDP)

Power module for the laboratory

Onboard protection mechanisms

As with all imperix power modules, PEB4050 modules embed protection mechanisms, such as over-current/voltage detection, which block the SiC phase-leg in case of hazardous behavior and thus ensure that its capabilities are never exceeded.

Combined with the adjustable protections of our programmable controller, PEB modules are the ultimate solution for safe and efficient converter prototyping in both teaching and research applications.

System-level integration

A modular approach for building power converter prototypes

Basic configuration example:

  • 1x B-Box RCP (digital controller)
  • 3x PEB4050 power modules
  • 1x rack-mountable open chassis

Imperix  power modules are easy to assemble together

When used to build power inverters, PEB4050 modules are ideally suited for 120/210VAC applications, as commonly found in North America and other countries with 60Hz grid frequency. In such cases, a DC bus voltage of 400V is indeed sufficient.

Typical operating parameters
  • Switching frequency: 1-20kHz.
  • AC grid. voltage: 120/210VAC.
  • Power rating (three-phase): 5-15kW.
Typical configurations
  • Buck and boost converters
  • Interleaved DC/DC converters
  • 120VAC grid-connected inverters
  • Variable-speed drives
  • Frequency converters
  • Soft-switched converters
  • Modular multilevel converters
  • etc.

IGBT-based power converters

Application examples of phase leg modules

Most power converter topologies can be built using phase-leg (aka half-bridges), which can be considered as the basic building blocks of power electronic systems. Basic use case scenarios built with PEB phase leg modules include single-phase inverters and three-phase inverters, as well as isolated or non-isolated DC/DC converters.

High-power battery chargerInterleaved DC/DC buck converter, using:

Variable-speed motor driveThree-phase low-voltage inverter, using:

Grid-connected PWM rectifierThree-phase power converter, using:

New IGBT power module

A powerful IGBT phase-leg

PEB4050   VS  previous generation

Based on state-of-the-art IGBT semiconductors, the PEB  modules enable faster switching frequencies than our previous phase-leg power modules, while guaranteeing lower losses.

These modules allow building power converters with superior harmonic performance, more compact passives, and thus increased power density.

In addition, the embedded current sensor features a high measurement bandwidth, allowing to precisely sense the output currents, enabling the validation of fast closed-loop control techniques.

PEB4050   VS  previous generation

Reduced switching losses

PEB4050 offers slightly lower switching losses than the previous PEB4046 module. This broadens the range of their possible applications.

Reduced conduction losses

A drastic reduction of conduction losses can be observed between PEB4046 and PEB4050, with over 40% less energy lost during switching!

Modular building blocks

Benefits for power electronic research

Our Silicon-based power modules – similarly to our Silicon Carbide (SiC) based modules – offer an excellent trade-off between ease of use and suitability to multiple applications. They are ideally suited for rapid control prototyping applications, where the quick implementation of the power stage is essential.


With these building blocks, DC/AC inverters or any converter topology can be built in the blink of an eye. What’s more, power modules can be reused among multiple projects to save time and money.


The modules contain everything needed to start working right away (sensors, logic, cooling,…). Combined with the B-Box RCP controller, they form a truly plug-and-play solution.


The PEB power converter modules are sufficiently powerful to handle a few kW per phase. This makes them a perfect choice for demanding laboratory applications or pilot /demonstration systems.


The PEB modules are well protected and can be safely put in the hands of inexperienced engineers. This is ideal for teaching or student projects, or simply for those who enjoy the related peace of mind.

Power module accessories

Rack-mounting equipment

Imperix power electronic building blocks are best assembled within rack-mountable frames or enclosures. This guarantees the highest flexibility, thanks to the modular nature of the power converter modules.

Rack-mountable frame (3U)
PEB modules can be mounted within open rack-mountable frames. As such, modules remain easily accessible and can be easily put in (or taken out) of the chassis.

> Discover Open Frames

Rack-mountable enclosure (4U)
Imperix power modules can also be placed within enclosures that make use of 4mm laboratory safety plugs. This guarantees that no dangerous voltage can ever be reached.

> Discover 19” enclosures

Inductors and passive filters (4U)
For those interested to have a first configuration that is fully ready-to-use, imperix offers a standard box with inductors and LC filters. Components have reasonable, but fixed values.

> Discover the passive filters box

Other power modules

Imperix power electronic building blocks are best assembled within rack-mountable frames or enclosures. This guarantees the highest flexibility, thanks to the modular nature of the power converter modules.


  • 800V / 24A
  • 1x phase-leg (half-bridge)

The PEB8024 modules are SiC-based power modules. They are designed for fast-switching applications, up to 200kHz. 

> Read more on PEB8024


  • 800V / 38A
  • 1x phase-leg (half-bridge)

The PEB8038 modules use SiC MOSFETs. They are the most powerful modules, although they cannot switch as fast as the PEB8024 modules. 

> Read more on PEB8038


  • 200V / 15A
  • 2x phase-legs (full-bridge)

The PEH2015 modules use Silicon IGBTs. Their reduced voltage ratings make them preferred for multilevel converter applications

> Read more on PEH2015