Tomasz Rybicki’s Post

Thank you for sharing.

Dear colleagues from the R&D and purchasing departments, Are you looking for Flying Capacitors in PV Booster stages. We have something special for you. One of the well-established key requirements in solar inverters is their high efficiency. But also, their costs, size and weight are subject to continuous improvements. One approach to better fulfil all these demanding requirements simultaneously is the use of multilevel topologies. The main advantages of switching between multiple voltage levels are lower voltage stress for the semiconductors and lower ripple stress for the power chokes. This means that lower-voltage semiconductors can be used, which are typically cheaper. Lower ripple stress for the chokes makes smaller and thereby lighter and cheaper choke designs possible. The flying capacitor topology is a multilevel topology, that is an interesting choice especially for (but not limited to) the booster stage of a solar inverter. As its name implies, it needs a capacitor as a key element. All information can be found under the link below: https://lnkd.in/g5mJjhd4 If you have any questions, let me know. I would be happy to answer them.

Dear colleagues from the R&D and purchasing departments, We are proud to announces the new EPCOS B43659 series of snap-in aluminum electrolytic capacitors. This is the next generation of ultra-compact general-purpose components for voltages of 450 V (DC) featuring an extremely high CV product. It provides the same features and serves the same applications as the previous series; however, the B43659 is much more compact. In case sizes of only 22 mm x 25 mm to 35 mm x 50 mm (D x H), these components achieve capacitances ranging from 140 µF to 1030 µF. In addition to the standard versions with 2 terminals, versions with 3 terminals are also available to ensure correct installation. Essential performance features include a high ripple current capability of up to 7.01 A (120 Hz, +60 °C) and a service life of at least 2000 h at a maximum operating temperature of +105 °C. Accurate lifetime calculation under application-specific conditions is quick and easy with the web-based AlCap Tool (https://lnkd.in/eicjZm2s). Due to their high reliability and compact size, these RoHS-compliant aluminum electrolytic capacitors can be used in a wide range of applications, such as switched-mode power supplies, frequency converters, uninterruptible power supplies (UPS), medical equipment, and solar inverters. Features & Applications Main applications: Power supplies Frequency converters Uninterruptible power supplies Medical equipment Solar inverters Not for automotive applications unless otherwise specified Main features and benefits: Extremely high CV product, ultra-compact High reliability High ripple current capability Versions with 3 terminals to ensure correct insertion RoHS-compliant All information can be found under the link below: https://lnkd.in/dJGYaBdr If you have any questions, let me know. I would be happy to answer them.

Dear colleagues from the R&D and purchasing departments. We would like to introduce new types of the EPCOS InsuGate series (B78541A). These compact SMT transformers with high working voltage are suitable for gate driver applications for IGBTs and MOSFETs in e-mobility (qualification according to AEC-Q200 as well as according to AQG vibration profile) and in industrial electronics. The components with a MnZn ferrite core are designed for operating frequencies of 100 kHz to 500 kHz and operating temperatures of -40 °C to +150 °C. Depending on the type, the transformation ratios of the windings are 1:1.08 (B78541A2467A003) or 1:1.07:0.6 (B78541A2492A003). With a low coupling capacitance of only 4 pF, the SMT transformers are also suitable for use with SiC or GaN semiconductors. Combining the highly resistive plastic material with a CTI ≥ 600 and the special coil design, shorter clearances and creepage distances are possible compared to conventional insulated or potted components, despite the dimensions of only 13.85 x 10.5 x 9.2 mm (L x W x H). The UI7 platform, for example, offers creepage distances between primary and secondary windings of >9.2 mm. With a partial discharge extinction voltage of at least 840 V (peak voltage) and AC high voltage testing at 3 kV (50 Hz, 1 s), the 2 g lightweight components meet IEC 61558 for reinforced insulation for working voltages up to 300 V (AC) or 700 V (DC) for basic insulation. This is sufficient for many industrial and automotive applications. The new UI7 family includes two reference models to allow possible winding configurations for forward and push-pull topologies with the appropriate number of outputs. Features & Applications Main applications fields:   ·        Switched power supplies (bridge topologies) ·        Gate driver circuits ·        Isolated DC-DC converters ·        Galvanically isolated single-channel IGBT driver ICs   Main features and benefits:   ·        Compact dimensions 13.85 x 10.5 x 9.2 mm (L x W x H) ·        Surface mountable (SMT) ·        Clearance and creepage distances 8.14 mm and 9.2 mm respectively ·        Low coupling capacitance of 4 pF (typical) ·        Qualified according to AEC-Q200 and AQG vibration profile   All information can be found under the link below:   https://lnkd.in/d-kusgYG If you have any questions, let me know. I would be happy to answer them.