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 […]
Capacitors
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 […]
Digital multiphase controllers, smart power stages optimized for IoT infrastructure systems
Renesas Electronics Corporation announced its 2nd generation of 15 new digital multiphase controllers and six smart power stages that support 10A up to 1000A+ digital computing loads for advanced CPUs, FPGAs, GPUs, and artificial intelligence (AI) ASICs addressing IoT infrastructure systems. The ISL6822x, ISL6823x, RAA2282xx digital multiphase controllers, and ISL993xx, RAA2213xx smart power stages expand […]
And the LEAP Gold for Power Electronics goes to…Cornell Dubilier
The winners of the 2020 LEAP Awards (Leadership in Engineering Achievement Program) were announced last week in a digital ceremony, with products across 12 categories, including embedded computing, power electronics, and test and measurement. Critical to LEAP’s success is the involvement of the engineering community. No one at WTWH Media selected the winners. Instead, our […]
Why electrolytic capacitors blow up
Electrolytic capacitors have a reputation for failing spectacularly when mistreated. Leland Teschler • Executive Editor Pop open a common LED bulb and you’ll often find an electrolytic capacitor occupying a place in the input from the ac line. Though illumination-grade LEDs generally have lifetimes exceeding 10,000 hours, the electrolytic caps in their base may not […]
Capacitors for power converter output filtering
Capacitors are found throughout switch mode power converters. The first FAQ in this series of three articles looked at the X and Y safety capacitors used in the input filtering section. The second article looked inside the power converter and considered dc link capacitors as well as energy storage and pulse power capacitors. This final […]
Automotive-qualified MLCCs handle noise decoupling tasks
TDK Corporation has developed new products in its CGA series of multilayer ceramic capacitors (MLCC) for automotive applications, achieving world-class capacitance* of 22μF in 2012 size (2.0 x 1.25 x 1.25 mm) and 47μF in 3216 size (3.2 x 1.6 x 1.6 mm). Volume production began in September 2020. Advanced driver-assistance systems (ADAS) are becoming […]
DC link, energy storage, and pulse power capacitors
The first article in this three-part FAQ series reviewed safety capacitors (sometimes called high-frequency bypass capacitors), primarily for filtering electromagnetic interference (EMI) on the input of mains-connected power converters such as power supplies, battery chargers, and motor drives. This FAQ moves deeper inside the various types of power converters and will consider DC link capacitors, […]
Safety capacitors for EMI filtering and voltage isolation
This is the first article in a three-part FAQ series on capacitors used in power-handling applications. This article will consider safety capacitors for filtering electromagnetic interference (EMI, also called radio frequency interference, RFI) on ac power lines, for antenna coupling, and for providing voltage isolation in DC/DC converters. Part two will look into “DC link, […]
