TDK Corp. has unveiled its xEVCap modular DC link capacitors for powertrain inverters in passenger cars, commercial and off-highway vehicles, and machinery tools. The new scalable and standardized design eliminates the need for custom capacitors, typical in these applications. This customization makes the development time-consuming and practical only in large production volume, according to TDK.
With the xEVCap, inverter designers can meet capacitance and current requirements at low product volumes, as well as save time to market, TDK said. The xEVCap series also reduces costs with its standardized capacitor modules.
The xEVCap comes in two connection styles: the B25654A*001 features lead wires for soldering to busbars or PCBs, and the B25654A*002 has flat terminals for welding or screwing to busbars. There are 11 variants per connection style, each is available in multiple different mechanical versions and voltage levels. Mechanical versions measure 85 × 47 × 40.5 mm (L x W x H), 97.5 × 35.5 × 42.5 mm and 109 × 47 × 40.5 mm.
The xEVCap DC link capacitors are available with a capacitance range from 60 µF up to 270 µF and four voltage levels (500 V, 650 V, 850 V and 920 V). They can be connected in parallel to meet different capacitance and current requirements.
The DC link capacitors are scalable and modular for different power levels and densities and are compatible with wide-bandgap (WBG) silicon-carbide and gallium-nitride power semiconductors. They also feature good self-healing properties and low equivalent series resistance (ESR) and equivalent series inductance (ESL).
Designers can access xEVCaps in TDK’s CLARA (Capacitor Life And Rating Application) tool that simulates the components electrically and thermally under different operating conditions. STEP files and SPICE models for the components are available for download. The complete capacitance range complies with the automotive standards AEC-Q200 rev. E and IEC TS 63337:2024.
TDK Corp | tdk-electronics.tdk.com
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