The power module is a ready-to-use power electronic
building block based on the elementary phase-leg ar-
rangement of two power semiconductors. It embeds all
the necessary circuits for simple and proper operation.
Fig. 1. Schematic overview of the PEB 8024 module
In most use cases, several modules are assembled in or-
der to form various power converter topologies. An ex-
ternal power electronic controller, such as the B-Box RCP,
in order to generate the necessary PWM signals.
» DC bus terminals (DC+ and DC–)
» Switching midpoint (AC terminal)
» DC bus midpoint (M, optional connection)
» PWM signals inputs (650 nm optical fiber receivers)
» AC current measurement (analog output, RJ45)
» DC voltage measurement (analog output, RJ45)
» Fault feedback signal (650 nm optical fiber emitter)
» 5/12V power supply (local control and cooling fan)
» Module-to-module coordination cable (optional)
An elementary application of the PEB 8024 power mod-
ule is shown in Fig. 2. The implemented system corre-
sponds to a DC/DC converter in buck configuration, also
known as DC chopper.1 This system produces a control-
lable voltage on the resistive load R, thanks to suitable
PWM signals applied at the input of the power module.
If desired, feedback control can be implemented in order
to improve the stability and / or dynamic performance of
the output current, voltage or power.
Thanks to the rapid implementation of power modules,
experimental validation on power electronic applications
and their control can be facilitated and accelerated.
In order to build a complete power electronic system,
several accessory products may be required, such as:
» A mounting solution (e.g. rack-mountable chassis)
» An auxiliary power supply (e.g. from the chassis)
» A PWM signals generator, or better, a fully-program-
mable digital controller such as the B-Box RCP;
» External current and / voltage sensors (optional);
» Passive components, such as inductors or filters;
» Power sources (e.g. laboratory supply, batteries, grid)
» Electric load (e.g. resistors or regenerative loads)
» Laboratory instruments (e.g. meters, probes)
Fig. 2. Topology of a buck converter using the power module
1 This example and many more are available on the imperix knowledge base.