Evaluation platforms help pick SiC components in power conversion circuits. Xuning Zhang, Levi Gant, Littelfuse, Inc. The quest for greener energy production and consumption has put a premium on high-efficiency power circuitry. In that regard, many modern power supplies and converters operate at much higher voltages that allow use of lower currents to minimize I2R […]
Semiconductor
Ultra-thin bus switches save board space
Diodes Incorporated announced that its family of quad- and dual-channel are now available in an ultra-thin QFN (UQFN) package. The UQFN package makes it easier for OEMs to increase PCB density and reduce product dimensions when developing PC notebooks and tablets as well as networking and telecommunications equipment. Discrete logic devices, such as bus multiplexers […]
Get ready for SiC-GaN combo power transistors
Researchers in Sweden have come up with a way of putting gallium-nitride transistor structures on a silicon-carbide substrate that potentially lowers the ON resistance of power FETs by an order of magnitude below that of commercial devices available now. The scientists hail from Sweden’s Linköping University and SweGaN, a spin-off company from materials science research […]
Researchers find ways to integrate GaN power circuits onto ICs
This year’s IEEE International Electron Devices Meeting (December 7-11, 2019) played host to presentations describing advances in gallium-nitride technology that may lead to smaller, more integrated power circuitry such as single-chip switching power supplies and more efficient power transistors. The IEDM is considered one of the premier technical conferences for developments in semiconductor and integrated […]
SiC FETs feature RRS(on) below 10 mΩ for high efficiency, low losses
Four new SiC FETs deliver RDS(ON) levels as low as 7 mΩ, delivering unprecedented levels of performance and efficiency for use in high-power applications such as electric vehicle (EV) inverters, high-powered dc/dc converters, high-current battery chargers and solid-state circuit breakers. Of the four new UF3C SiC FET devices, one is rated at 650 V with […]
Surface-mount current sensors handle up to 400 A
Allegro MicroSystems announced significant ease-of-use enhancements to its popular high current fully integrated ACS772/3 current sensor “CB” package family. These industry-leading, automotive-grade high voltage isolation current sensors already provide economical and precise solutions for both AC and DC current sensing up to 400A. Building on that leadership and deep customer-understanding, Allegro’s new surface-mount leadform option for […]
High-temperature thyristors handle up to 250 Vrms
Five new series of high-temperature Alternistor TRIAC switching thyristors are designed for use as semiconductor switches in appliances and equipment powered by line AC voltages up to 250 VRMS. Available in five compact, surface-mount and through-hole packages, these components expand the Littelfuse TRIAC product line by making high 150°C maximum junction temperature devices available in […]
Ultra-high-efficiency 4-A two-input power mux targets IoT apps
The GLF74130 input Power Mux IC offers significant efficiency improvement over traditional diode-based solutions. The tiny (1.27×1.67-mm) Wafer Level Chip Scale Packaged (WLCSP) Mux provides automatic/manual selection between two 1.5 to 5.5-V input power sources with up to 4.5 A continuous output current. The device’s small footprint and industry-leading combination of low RON (20 mΩ), […]
TRIAC thyristors offer high-temp switching for IoT smart home applications
Littelfuse announced an additional five series of high-temperature Alternistor TRIAC switching thyristors. The thyristors are designed for use as semiconductor switches in appliances and equipment powered by line AC voltages up to 250VRMS. Available in five compact, surface-mount and through-hole packages, these components expand the Littelfuse TRIAC product line by making high 150°C maximum junction […]
Power Electronics Top Talks in August 2019 on EDABoard.com
Peer-to-peer, engineer-to-engineer questions and answers from the EDABoard.com engineering community around power electronics. Click the “Read more” link and follow the entire conversation and maybe add your two cents by logging in to EDAboard.com 1 minute vs. 1-second isolation voltage test – Some offline transformers are spec’d for 3750vac for 1second (3mA). Some are spec’d […]
