August 18, 2016 08:00 ET

TDK Announces New DC Link Capacitor for IGBT Modules

ISELIN, NJ--(Marketwired - Aug 18, 2016) - TDK Corporation today announced a new EPCOS DC link capacitor that has been specifically designed for the HybridPACK™ 1-DC6 Insulated Gate Bipolar Transistor (IGBT) module from Infineon Technologies. The DC link capacitor features six busbar terminals with dimensions that are matched precisely to fit the IGBT module. This multiple contacting produces an exceptional current capability while at the same time offering very low parasitics. For example, the equivalent series resistance (ESR) has a maximum value of 0.6 mΩ and the equivalent series inductance (ESL) value is just 25 nH. Because of this low ESL, voltage peaks on switching off the IGBTs are almost completely eliminated.

The new DC link capacitor, with the order number B25655P4607J021, is designed for a rated voltage of 450 V DC and offers a capacitance of 600 µF. Its current capability is about 150 A at a maximum ambient temperature of 105°C and a cooled temperature on the underside of 75°C. The component is designed using power capacitor chip (PCC) technology in which the capacitor element is constructed as a stacked winding, with which a volume fill factor of nearly 1 is achieved. The dimensions of the housing are correspondingly compact, at just 140 mm x 72 mm x 50 mm.

A flat winding version is offered in the same housing (B25655P4477J121). This type has a capacitance of 470 µF and is likewise designed for 450 V DC. At a maximum ambient temperature of 105°C and a cooled temperature on the underside of 75°C, its current capability is about 150 A. The ESR value of this design is 0.8 mΩ and the ESL value is 25 nH.

In addition to the standard version, the capacitor is also available with an additional connection for the EPCOS high-voltage DC EMC filter. The combination of the IGBT module with the new link circuit capacitor enables the design of extremely compact inverters for xEV applications or for use as industrial inverters.

More information about the EPCOS DC link capacitor, the Infineon HybridPACK 1-DC6 IGBT module, and the Integrated Filter and Power Converter Electric Vehicle Powertrain Solution may be accessed at:

Main applications

  • DC link capacitor for HybridPACK 1-DC6 from Infineon Technologies

Main features and benefits

  • Low ESL of just 25 nH
  • Minimum ESR of just 0.6 mΩ
  • Compact dimensions of just 140 mm x 72 mm x 50 mm

About TDK Corporation
TDK Corporation is a leading electronics company based in Tokyo, Japan. It was established in 1935 to commercialize ferrite, a key material in electronic and magnetic products. TDK's portfolio includes electronic components, modules and systems* marketed under the product brands TDK and EPCOS, power supplies, magnetic application products as well as energy devices, flash memory application devices, and others. TDK focuses on demanding markets in the areas of information and communication technology and consumer, automotive and industrial electronics. The company has a network of design and manufacturing locations and sales offices in Asia, Europe, and in North and South America. In fiscal 2016, TDK posted total sales of USD 10.2 billion and employed about 92,000 people worldwide.

* The product portfolio includes ceramic, aluminum electrolytic and film capacitors, ferrites, inductors, high- frequency components such as surface acoustic wave (SAW) filter products and modules, piezo and protection components, and sensors.

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