One key factor: Determining the nuances of how capacitors handle expected ripple currents. Sam G. Parler, Jr., P.E. Cornell Dubilier Examine a dc link capacitor’s ac ripple current and you’ll realize it arises from two main contributors: the incoming current from the energy source and the current drawn by the inverter. Of course, capacitors cannot […]
Capacitors
Hybrid lithium-ion supercaps deliver up to 220 F at 3.8 V
Cornell Dubilier Electronics introduces two new series of Hybrid LIC Supercapacitors in response to the growing need for ultra-high capacitance values at higher operating voltages. The new VMF and VPF Series operate at 3.8 WVDC with capacitance values up to 220 Farads. The higher voltage results in increased energy density. With nearly eight times the energy density and a […]
Emerging applications for switched capacitor power conversion
Switched capacitor (SC) technology is often associated with on-chip filters and amplifiers or low-power and low-voltage power conversion such as charge pumps for wearables, Internet of Things (IoT) and similar battery-powered devices. That is changing. Today, SC power conversion is being developed for higher-power and higher-voltage industrial, electric vehicle and power grid applications such as […]
What are switched capacitor filters, amplifiers and integrators?
Switched capacitors (SCs) are highly-versatile circuit elements that can be used to provide various functions, ranging from micro-scale implementations embedded in integrated circuits (ICs) or designed into wearables and other small devices, to a variety of power conversion applications, up to grid-scale systems. This FAQ series will explore the versatility of switched-capacitors. Following this initial […]
How to shrink size and boost performance with low inductance electrolytic capacitors
By Suzana Jankuloska, Aluminum Electrolytic Product Manager at KEMET Corp Electrolytic capacitors optimized for low internal inductance can help reduce the cost of industrial power-conversion applications while increasing efficiency, performance, and reliability. As the automation of manufacturing and assembly processes continues to become more widespread, driven by emerging trends such as Industry 4.0 and the […]
High-temp, high-ripple current capacitor yields long life
New Yorker Electronics has announced the release of the new Vishay BC Components 190 RTL Aluminum Capacitors for increased design flexibility and board space in high-temperature applications. The new Automotive Grade miniature aluminum electrolytic capacitors offer high ripple currents up to 3.36A, operating temperatures to +125°C, and up to 6,000 hours of usable life. […]
Eval board helps evaluate 100-V high-speed, GaN half-bridges
GaN Systems announced a new 100V High-Speed, Half-Bridge Evaluation Board (GS-EVB-HB-61008P-ON) in collaboration with ON Semiconductor (OnSemi), a world-leading supplier of power semiconductor ICs. Available now through distribution partners, this high-performance solution is developed for existing and new PCB designs and allows power electronics designers to easily evaluate GaN for growing 48V market applications, including non-isolated step-down converters, non-isolated […]
Hybrid aluminum-polymer capacitors optimized for automotive, Industrial Apps
KEMET announces the launch of three hybrid aluminum polymer capacitor series: A780, PHA225, and PHH225. These AEC-Q200 qualified capacitors offer a combination of highly conductive polymer technology and liquid electrolytic material in a hybrid design, resulting in an outstanding electrical performance for automotive and industrial applications. This launch aligns with the growing vehicle electrification product […]
Modular capacitor concept simplifies dc link applications
ModCap is a modular capacitor concept for dc link applications. The newly developed power capacitors are available for rated voltages of 1,100 to 2,300 V and cover a 365 to 2,525 µF capacitance range. The rated currents between 105 and 180 A are type-conditioned with all types designed for 5-kA recurrent pulse currents. The maximum permitted hot spot temperature is […]
Aluminum electrolytic caps feature high CV product, high ripple current capability
TDK Corporation presents the new EPCOS aluminum electrolytic capacitor series B43647* with snap-in terminals. Thanks to their outstandingly high CV product, they are ideal for highly compact solutions in power electronics. The capacitors are designed for a maximum operating temperature of 105°C; at a rated voltage of 450 V DC and maximum ripple current, they […]
