Integrated CMC + DMC Chokes from PRAX Power

Common Mode and Differential Mode filtering combined in one compact component
Why this product?
When space is tight and EMC performance is critical, PRAX Power’s integrated CMC + DMC chokes deliver common mode (CM) and differential mode (DM) inductance in a single assembly. By engineering and controlling the leakage inductance of the CM choke, the device inherently provides the DM inductance—eliminating the need for a separate DM choke and reducing size and cost.
Key outcomes
- Up to 25% reduction in size and cost vs. discrete CMC + DMC implementations.
- Higher power density with fewer magnetic components.
- High EMC attenuation thanks to optimized magnetic design and nano crystalline core material.
Typical applications
- Two phase, three phase, and three phase + neutral power systems requiring compact, high performance input/output filtering (e.g., drives, inverters, chargers, power conversion stages).
- Space constrained systems where a single magnetic component simplifies layout and BOM.
Configurations
- 2 phase, 3 phase, and 3 phase + neutral variants.
Electrical ranges (typical)
- DM inductance: up to 30 µH @ 100 kHz.
- CM inductance: up to 5 mH @ 100 kHz.
- Rated current: 20–150 A.
- Rated power: 5–150 kW.
- CM current handling: up to 3 A without saturation.
- Working voltage: up to 1000 V.
Note: Not all specified values can be guaranteed simultaneously; contact Heynen for an application specific proposal.



































