A few simple techniques can boost the efficiency of modern PoE designs. Charlie Ice • Silicon Labs The latest Power over Ethernet (PoE) technology delivers enough power to meet the needs of today’s WiFi6 routers, IoT gateways, and 5G small cells. PoE now delivers up to 71 W of power over standard Ethernet cables. At […]
Power Electronic Tips
Liquid cooling for precise temperature control
Electronics that generate a lot of heat in a small volume often benefit from swapping a cooling fan for a system based on a liquid coolant. Greg Ducharme • Laird Thermal Systems The specific heat of water is higher than the specific heat of air—about 4,200 J/kg°C vs. 1,005 J/kg°C. This is another way of […]
Autonomous wireless charging keeps robots running
Buck-boost regulators efficiently power wireless charging stations for mobile robots. Logistics, delivery and inspection industries increasingly rely on mobile robotic fleets. These fleets have become large enough that their users are trying to find ways of recharging them that don’t rely on human operators. One means of automating the robotic charging process is through use […]
Formula E powertrains, fast charging and regen – Virtual Roundtable (part 2 of 2)
Moderated by Jeff Shepard Moderated by Jeff Shepard, EE World has organized this “virtual roundtable” bringing together experts in Formula E racing technology to share with you their experience and insights into powertrains, fast charging, regenerative braking, and potential technology crossovers between Formula E and conventional electric vehicles. Joining us for this virtual roundtable are: […]
HIgh-voltage superjunction MOSFETs tailored for resonant supply topologies
For SMPS designs in industrial applications, recent technology trends include the need for high efficiency and power density as well as increased bus voltages. This triggers the need for power devices with 650 V breakdown voltage. With its 650 V CoolMOS CFD7 product family Infineon Technologies AG meets these demands. The devices are best suited for […]
Small coiled metal-alloy power inductors boast high saturation current, high permeability, low resistance
Würth Elektronik announced WE-MAPI, one of the world’s smallest coiled metal-alloy power inductors. It is characterized by a high saturation current, high permeability, and low resistance. The most important area of applications for the WE-MAPI range are high-performance DC/DC converters with a high efficiency for switching frequencies of up to 20 MHz. New additions to […]
4-channel, ultra-low TVS optimized for high-speed line protection
Alpha and Omega Semiconductor Limited introduced the AOZ8S212UD4, AOZ8S321UD4, and AOZ8S306BD4, a series of Transient Voltage Suppressor (TVS) for high-speed line protection using the best-in-class low capacitance TVS platform. The new products are ideal for Electrostatic Discharge (ESD) protection for laptops, televisions, and other electronic devices. The low capacitance TVS series is optimized for high-speed line protection including […]
Navigating new safety standards for power supplies
More stringent requirements are scheduled to soon emerge from standards bodies that will affect a wide range of manufactured equipment. Sebastian Fischer, Andreas Flũhlern • Traco Electronic AG Standards committees are working on a new, common standard for safety requirements governing audio/video, information and communication technology–the IEC/EN/UL 62368-1. The first version of IEC 62368-1 was […]
Formula E batteries, software and technology transfer – Virtual Roundtable (part 1 of 2)
Moderated by Jeff Shepard EE World has organized this “virtual roundtable” bringing together experts in Formula E racing technology to share with you their experience and insights into batteries, software, and potential technology crossovers between Formula E and conventional electric vehicles. Joining us for this virtual roundtable are: Masayasu Yoshida (MY), Vice President, Automotive Systems […]
Silicon half-bridge driver ganged with GaN transistors for faster charging
STMicroelectronics has unveiled MasterGaN, the world-first platform embedding a half-bridge driver based on silicon technology along with a pair of gallium-nitride (GaN) transistors. The combination will accelerate the creation of next-generation compact and efficient chargers and power adapters for consumer and industrial applications up to 400W. GaN technology enables these devices to handle more power even as […]