Solutions for power electronics
- May 16 to 18, 2017
- Tuesday to Thursday 9:00 to 17:00
- Nuremberg, Exhibition Center
- Hall 9, Stand 354
Welcome to PCIM 2017!
We are presenting our comprehensive and innovative portfolio of EPCOS and TDK components for power electronics and e-mobility. The focus is on capacitors for the DC link and inductors and protection devices for all kinds of power supplies. We’re looking forward to your visit!
CeraLink™ capacitors for higher rated voltages
The TDK CeraLink™ series is now available with two low-profile (LP) types for a rated voltage of 900 V DC. The SMT capacitors have a capacitance of 0.25 µF and feature different terminations: the B58031I9254M062 type with L-style termination has dimensions of 10.84 mm x 7.85 mm x 4 mm, while the B58031U9254M062 with J-style termination measures only 7.14 mm x 7.85 mm x 4 mm.
The new capacitors supplement the existing LP portfolio which until now has included types for 500 V DC (1 µF) and 700 V DC (0.5 µF). Thanks to their compact design and high permissible continuous operating temperature of 150 °C, all LP types can, for example, also be embedded directly into IGBT modules as snubber capacitors.
Another advantage of the CeraLink capacitors based on PLZT (lead lanthanum zirconate titanate) ceramic is their extremely low ESR and ESL values. For example, these components feature a minimum ESR value of 12 mΩ and an ESL value of just 2.5 nH. These capacitors are therefore well suited to converter topologies based on fast-switching semiconductors such as GaN or SiC. Voltage overshoots and ringing when switching are significantly lower than with conventional capacitor technologies. Another feature of the LP types is the high steady state ripple current of up to 11.4 ARMS.
If higher capacitances are required, CeraLink types with solder pin terminations are available. They are designed for rated voltages of 500 V DC, 700 V DC and 900 V DC also. They offer capacitances of 20 µF (500 V DC), 10 µF (700 V DC) and 5 µF (900 V DC). The ESL value of these types is typically around only 3.5 nH.
Aluminum electrolytic capacitors with higher performance
New series of EPCOS aluminum electrolytic capacitors now offer a higher performance. The B43743*/B43763* series of screw terminal capacitors features a 40 percent higher ripple current capability than the previous series of the same size. The new capacitors are designed for rated voltages of between 350 V DC and 450 V DC and cover a capacitance range from 1500 µF to 18,000 µF. The components withstand a maximum operating temperature of 105 °C, at which a useful life of 6000 h is achieved, when operated at the rated current. Depending on the type, the can diameters range from 64.3 mm to 90 mm, and the heights from 80.7 mm to 221 mm.
The ripple current capability has also been increased for snap-in types, too. It is, for example, about 20 percent higher for the types of the B43544* series that are designed for 400 V DC and 450 V DC. Altogether, this series covers voltages from 200 V DC to 550 V DC and offers capacitances of between 47 µF and 2700 µF. At the maximum operating temperature of 105 °C and the rated current, the useful life is 3000 hours. The can diameter ranges from 22 mm to 35 mm, and the heights from 25 mm to 55 mm.
The B43641* series of snap-in capacitors, which is also new, has an impressively compact design. The new capacitors feature an insertion height that is about 5 mm lower than that of the previous series while maintaining the same capacitance. The height ranges from 25 mm to 55 mm, and the can diameter from 22 mm to 35 mm. These capacitors are designed for voltages from 400 V DC to 450 V DC and for a useful life of 2000 hours at 105 °C. The capacitance range extends from 120 µF to 1200 µF.
DC link capacitor for IGBT modules
A new EPCOS DC link capacitor has been specifically designed for the HybridPACK™ 1-DC6 IGBT module from Infineon Technologies. The outstanding features of this component are the six busbar terminals with dimensions that are matched precisely to fit the IGBT module. This multiple contacting produces an excellent current capability while at the same time offering very low parasitics. For example, the ESR has a maximum value of 0.6 mΩ and the ESL value is just 25 nH. Thanks to this low ESL, voltage peaks on switching off the IGBTs are almost completely eliminated.
The new 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.
Furthermore, 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.
SMT high-current chokes with a compact design
The EPCOS ERU SMT power inductors has been extended with the ERU16 choke series that comprises ten different types. The inductance values of the new B82559*A016 series extend from 1.0 µH to 30 µH and their saturation currents range from 9.2 A DC to 37 A DC. The outstanding feature of these new power inductors is their compact design: With a footprint of just 17.3 mm x 18.7 mm, they have low insertion heights of 7.55 mm (1.0 µH) to 10.95 mm (30 µH), depending on the type. This low-profile design is based on a flat rectangular helical winding technology which results in lower losses. The DC resistances are between 1.05 mΩ and 15.35 mΩ. With the new ERU16 types TDK is expanding its broad spectrum of ERU SMT power inductors, which include the existing ERU13, ERU19, ERU20 and ERU25 series.
The new series of high-current chokes is designed for operating temperatures of between -40 °C and +150 °C. Its additional third soldering pad results in high mechanical stability on the PCB. They can be used as output and storage chokes in a wide variety of power supply topologies. These include point-of-load (POL) converters, DC-DC converters, high-current switch-mode power supplies, solar converters and xEV applications. The components of the new series are RoHS-compatible and qualified to AEC-Q200.