by Akshay Mehta and Yang Zhang, systems and applications engineers, Texas Instruments DC/DC converters are often used in distributed power-supply architectures for industrial applications. Many architectures use two types of output capacitors: One has higher capacitance and higher equivalent series resistance (ESR), such as aluminum electrolytic, while the other has much lower ESR and relatively […]
Capacitors
Medical grade thin film chip capacitors for RF signal and power applications
AVX Corporation has released a new series of thin film chip capacitors specifically designed to meet the demanding performance specifications for implantable medical devices. Delivering extremely tight capacitive tolerances, exceptionally repeatable performance, and remarkably low ESR and high Q at high frequencies — including VHF, UHF, and RF bands — AVX’s new Accu-P MP Series capacitors […]
Nichicon introduces the UCH series surface mount electrolytic capacitor
Nichicon Corporation has released a new line of surface mount electrolytic capacitors called the “UCH series.” The use of a new low-resistance electrolyte and a new internal structure provides the low ESR at cold temperatures needed in today’s harsh automotive environment. There is an increasing demand for SMD capacitors in automotive control units such as […]
Choosing Ceramic Capacitors
It may seem a bit mundane but choosing ceramic capacitors can cause some problems and confusion. Ceramic capacitors have taken over from aluminum electrolytic capacitors and tantalum electrolytics in a lot of cases and even film capacitors but there are pitfalls. For example, the very low ESR (equivalent series resistance) of ceramic capacitors can cause […]
High-voltage stacked capacitors handle 5 kV
AVX Corporation, a manufacturer of passive components and interconnect solutions, has introduced a new RoHS-compliant series of high voltage, DIP-leaded stacked SMPS capacitors. Rated for 1,000–5,000V and capacitance values spanning 100pF to 15µF, the new RV Series capacitors feature low ESR and ESL, low DC leakage current, high current handling capabilities, excellent high frequency performance, […]
500-W certified for medical, industrial uses
Excelsys Technologies announces the XS500 series of high-efficiency, 500W convection-cooled AC/DC power supplies. With typical efficiency of 92%, and operating from 90-264VAC, the XS500 delivers 500W of output power without the need for forced-air cooling. Combining low-energy-loss topologies with high-efficiency design, the component temperatures within the XS500 are kept to a minimum. This results in […]
Ceramic caps for high voltages
Morgan Advanced Materials (MGAM) announces its extensive range of ceramic capacitors for high voltage DC and AC and high power radio frequency (RF) applications. MGAM’s line of high voltage ceramic capacitors includes high voltage encapsulated discs, live line capacitors, and voltage multiplier assemblies, as well as pulse power capacitors. They are ideal for laser power […]
Film caps billed as good spark killers
AVX Corporation, a manufacturer of passive components and interconnect solutions, has introduced the new FV Series AC film capacitors. Designed to provide Class X2 interference suppression, FV Series metallized polypropylene film capacitors are rated for 305Vrms and exhibit self-healing properties, high moisture resistance, high tolerance for over voltage stress, and excellent active and passive flame […]
Ceramic capacitors work to 200°C temperatures
KEMET Corporation (NYSE: KEM), a global supplier of electronic components, introduced its new High Temperature Radial Molded Multilayer Ceramic Capacitors which offer industry-leading performance in extreme environments and high temperature up to 200 degrees Celsius. These capacitors are designed specifically to withstand the severe shock and vibration conditions associated with deep-well and horizontal drilling activities, […]
Gallery: Scenes from the IEEE ECCE conference
The IEEE Energy Conversion Congress and Exposition took place last week in Pittsburgh. The clear trends based on exhibits on the show floor included a lot of interest in SiC power devices and in alternative topologies for inverters. Here are a few of the more interesting sites we encountered there. SiC on display The Center […]
