描述

• Special Characteristics of Industrial Grade CMCs
• Variety of Designs of Common Mode Chokes
• UL1446-compliant designs based on ’s class B insulation system (File No. E329745)
• Operating temperatures up to 130 °C”

• Designed for a wide range of applications:

• Switched-mode power supplies (SMPS)
• Solar inverters
• Frequency converters
• Welding equipment
• Wind generators
• Uninterruptible power supplies (UPS)

• Special Characteristics of Automotive Grade CMCs
• Filterdrosseln basierend auf nanokristallinen Kernen aus VITROPERM für Automotive- • Anwendungen

• Ambient temperature: -40 °C < Ta < +115 °C • Max. short-term operating temperatures of Top = 160 °C • Rated insulation voltage: Ui= 525 Vrms (functional insulation, pollution degree 1) • Automotive qualified according to AEC-Q200 • Design taking into account ‚Technical cleanliness‘ acc. to VDA 19 Part 2 • Developed for DC/DC converters in hybrid and electric vehicles General Characteristics • Common Mode Choke with Weight und Cost Optimized Design using VITROPERM 550 HF Core Application advantages Technical background • Small size high µ, high BS • Suitable for high current • and/or high voltage high µ, high BS, optimized core design • Single stage filter conpects possible extreme broadband attenuation behavior • high permeability, low capacitance designs • slow µ decline towards higher frequencies • low Q factor in the 150 kHz range • High efficiency, low dissipation loss low number of windings necessary for high L, filter stage reduction • Suitable for high and low ambient temperatures and high operating temperatures high Curie temperature, material properties • (µ, BS, λS) virtually independent of temperature • Simplified filter design material properties (µ, BS, λS) virtually independent of temperature, constant impedance over a wide common mode current range due to linear magnetization curve Superior EMC Filter and Common Mode Choke Design • Common Mode Chokes based on VITROPERM Cores • Nanocrystalline cores are widely used in common mode choke (CMC) applications due to their unique combination of magnetic properties. By utilizing low-cost raw materials (Fe-based) and modern, large-scale production, VITROPERM is a very competitive solution for a wide range of applications • Our CMCs feature high attenuation which is maintained across a wide frequency range offering extremely broadband attenuation. In many cases, this characteristic can allow a reduction of the number of filter stages in multistage EMC filter configurations to reduce complexity, cost and filter volume. Copper losses are also reduced, thus increasing the efficiency and lowering component temperature • We have extensive practical and theoretical expertise in the design of CMCs and filter configuration using nanocrystalline cores and components. At higher frequencies, the winding configuration has a major effect on the parameters of winding capacitance and leakage inductance and is therefore carefully considered in our choke designs. • Design Advantages with VITROPERM Stehende und Liegende Filterdrosseln basierend auf nanokristallinen Kernen aus VITROPERM The superior material properties of nanocrystalline VITROPERM enable common mode chokes with high inductance/impedance, even with a small number of turns, resulting in reduced copper losses, low winding capacitance and excellent HF performance. Due to the high initial permeability, low winding capacitance and a low Q-factor, VITROPERM CMCs offer a broadband insertion loss curve ranging from 10 kHz up to several MHz and improved attenuation behavior at both low and high frequencies. Better attenuation properties and an extended operating temperature range allow a reduction of the component volume by a factor of up to 3 or more under similar conditions. The excellent attenuation of VITROPERM CMCs simplifies the filter design in a wide frequency range."