Solutions for power electronics
- June 5 to 7, 2018
- Tuesday to Thursday 9:00 to 17:00
- Nuremberg, Exhibition Center
- Hall 9, Stand 354
Welcome to PCIM 2018!
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 EMI suppression. Also highlighted are 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 CeraLinkTM series is 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.
These capacitors supplement the existing LP portfolio of 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 also designed for rated voltages of 500 V DC, 700 V DC and 900 V DC. They offer capacitances of 20 µF (500 V DC), 10 µF (700 V DC) and 5µF (900 V DC). The ESL value of these types is typically around only 3.5 nH.
World’s first axial-lead hybrid polymer aluminum electrolytic capacitors
The world’s first hybrid polymer aluminum electrolytic capacitor in axial design offers an unrivaled capacitance of 1300 µF at a rated voltage of 25 V and an extremely low ESR of just 3 mΩ. The new EPCOS capacitor’s dimensions are a compact 14 mm x 25 mm (D x H). The new hybrid polymer aluminum electrolytic capacitors feature an ESR that is up to 8.5 times smaller than that of standard aluminum electrolytic capacitors. As a result, the new capacitors offer an extremely high ripple current capability of up to 16 A at 10 kHz and 125 °C case temperature.
The new axial-lead hybrid polymer aluminum electrolytic capacitors have a very high power density that significantly reduces the number of components needed, resulting in a noticeable saving of space. Until now, in order to achieve the high current capability required for automotive applications, it was often necessary to connect in parallel several standard aluminum electrolytic capacitors – with overdimensioned capacitance – or multiple conventional low-capacitance hybrid polymer SMD aluminum electrolytic capacitors. Using a single component for this purpose also ensures higher reliability, as fewer solder points are necessary. A typical area of application for the new hybrid polymer aluminum electrolytic capacitors with rated voltages of 25 V, 35 V and 63 V are the DC links of inverters for 48-volt systems.
MEGACAP Type MLCCs with high capacitance and low ESR
The new series of vertically stacked MEGACAP Type MLCCs that combine high capacitance and low ESR. The new CA series offers rated voltages from 25 V to 1000 V and covers a capacitance range from 20 nF to 150 µF. The new MLCCs are available with C0G, X7T, X7S, and X7R temperature characteristics. Thanks to their high capacitance values, the new capacitors are suitable for the resonant circuits of wireless and plug-in charging systems, for example, for industrial vehicles and robots. They can also be used in smoothing and decoupling applications in industrial equipment.
The MEGACAP Type MLCCs feature metal lead frames attached to the electrode ends of the components to protect against board flexure cracks and solder cracks from thermal shocks. The metal material of the terminal has also been optimized to lower the ESR and achieve a higher ripple current capability. In order to enable a low profile with increased capacitance, TDK has adapted its MEGACAP stack design so that the MLCC elements are stacked side by side. The vertically stacked design enables stacks with three or even more elements. Hybrid joints between the metal terminals and the MLCC are both soldered and clamped to prevent the individual MLCC elements from falling out of the lead frame at the increasingly higher reflow temperatures.
Aluminum electrolytic capacitors with higher performance
The EPCOS B43743*/B43763* series of aluminum electrolytic capacitors with screw terminals features a 40 percent higher ripple current capability than the previous series of the same size.
The 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 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.
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.