Filter choke supports 48V designs

August 09, 2019 //By Christoph Hammerschmidt
Filter choke supports 48V designs
Inverters and DC-DC converters are required for fast and cost-efficient hybridization of the automotive powertrain., but one of the great challenges is the very limited installation space. With a family of compact filter chokes, Vacuumschmelze (VAC) offers a suitable solution.

Vacuumschmelze (Hanau, Germany) has developed a new series of its automotive-certified Vitroperm choke, characterized by high attenuation and permeability. This means that they are up to the constantly increasing safety regulations with increasing on-board network requirements for EMC, the company advertises.

The choke family is constructed with powder shell cores offer very low leakage inductance, resulting in outstanding EMC performance. Operation is briefly possible up to 300 A peak at up to 150 °C ambient temperature. The high mechanical requirements on components in the limited installation space of the inverter are reliably met with tolerances of only ± 0.3 mm; automated production ensures a constant level of quality and costs.

Future automotive applications such as electric air-conditioning compressors, electric roll stabilization and electric turbochargers offer further CO2 savings potential, as these services are only called up in the vehicle when required (power on demand). Here, the current-compensated chokes with nanocrystalline Vitroperm cores offer application advantages such as excellent damping properties over a wide temperature range, small size and flat temperature characteristics. The large standard portfolio also includes solutions for high currents or high voltages.

More information: www.vacuumschmelze.com

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