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ModCap Standard Series – TDK Electronics Factories Inc.

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ModCap™ is a modular, versatile power capacitor concept for use in DC link applications.

Combined with the latest generation of power modules, it enables compact converters for traction, renewable energy, and industrial applications to be brought to market quickly. Two product lines are available: ModCap MF for silicon IGBT modules and ModCap HF for silicon carbide MOSFET (SiC) modules.

Description

With ModCap HF, TDK adds a series that is particularly suitable for DC link applications in SiC-based converters. In combination with such very fast switching power modules, the components enable compact converters where a compact, robust design and highest power density are required.

This high frequency capability is made possible by the flat capacitor windings connected in parallel as well as the eight terminal contacts and a new type of internal busbar. Therefore, the components can be placed very close to the SiC power modules and thus absorb the high-frequency harmonics excellently up to the frequency range of several hundred kilohertz. Together with the extremely low stray inductance of 8 nH, this prevents the voltage at the power modules from overshooting too much when the current is switched off. As a result, snubber capacitors are generally not required. This, in turn, reduces the footprint and cost of new-generation inverter designs, especially those using SiC technology.

For both product families, biaxially oriented polypropylene (BOPP) is used as the dielectric, allowing a constant hotspot temperature of +90 °C until a new generation of dielectrics which TDK is currently developing enables hotspot temperatures of up to +125 °C. Simulation software is available to calculate the thermal behavior of the capacitors based on parameters such as frequency spectrum, maximum current, and customer-specific installation conditions.

Features

  • Modular concept for parallelization especially with IGBTs (ModCap MF) or SiC MOSFETs (ModCap HF)
  • Extremely low ESL of 14 nH (ModCap MF) or even 8 nH (ModCap HF)
  • Temperature up to +90 °C hot spot
  • Lifetime up to 200.000 hours
  • Simulation software available

Benefits

  • Cost optimization
  • Reduced time to market and lead time
  • Compact and high power density converters e.g., light traction or renewable energy
  • Low voltage overshoot, therefore, no snubber capacitors needed

Construction and Standards

  • Filled with polyurethane resin (dry technology)
  • Plastic case (open)
  • Flat windings
  • Use of biocircular films
  • 8 terminals connection with a new generation of internal bus bar (ModCap HF)
  • EC 61071, IEC 61881-1, EN 45545-2 HL3 R23 (fire and smoke), UL recognized

Series comparison

Simulations

Thermal simulation
Thermal model available for specific simulation according to spectrum and boundary conditions defined by the customer.

Electromagnetic simulation
Electromagnetic model available for specific simulation according to spectrum and boundary conditions defined by the customer.

Higher sustainability through biocircular films

TDK introduced a bio-circular polypropylene (PP) film for all its ModCap series. The ISCC-certified raw material is obtained from second-generation renewable raw materials (bio-circular) which come exclusively from waste and residues: from the production of vegetable oil, from the paper and pulp industry, or used cooking oil, for example. Thus, fundamental ethical issues should be avoided, such as conflicts with food cultivation which could increase food prices. Bio-circular PP raw material can be processed in the very same way as conventional ones. It is chemically identical, and in terms of performance, it has the very same electrical and physical properties.

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TDK Electronics Factories, Inc.
TDK Electronics Factories, Inc.

Production of electronic components such as transformers and capacitors

TDK Corporation is a subsidiary of TDK Corporation based in Yurihonjo City, Akita Prefecture, Japan, and is engaged in the manufacture and assembly of electronic components. Specifically, the company manufactures ferrite-based magnetic components and other passive components such as transformers and capacitors.

Our Business

TDK is a comprehensive electronic components manufacturer leading the world in magnetic technology.
TDK began its trajectory by producing the world’s first ferrite cores using a magnetic material called ferrite, and the company is now a large manufacturer of components.
Ferrite is a material with many advantageous properties.
Modern TDK commands a wide range of technologies that make daily life more convenient and pleasant. Our products serve a myriad of applications—they provide critical functionality in smartphones, personal computers, electrical appliances, industrial equipment, and automobiles.
TDK components are vital for progress in many areas.
Meanwhile, the power of magnetics continues to inform our global leadership role.

The role played by TDK components —
Unseen enablers of functionality taken for granted.
Many products that surround our daily lives rely extensively on TDK’s wide palette of electronic components. But because these are used internally, they remain mostly unseen by consumers.
If your electronic devices operate as designed and make your day more enjoyable, that means that the components in them are functioning properly.
But without these electronic components, many things that we take for granted these days might never have come about.

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