GaN Systems announced the availability of its 50 W wireless power amplifier, a small size, low cost, and high-efficiency evaluation board ideal for wireless power transfer and charging applications. It is targeted for lower power applications in industrial and consumer markets for items such as power tools, IoT devices, handheld terminals, medical devices and household […]
Power Components
Power Electronics Top Talks in March 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 VFD to control 3-phase AC induction motor – I want to control the speed of a woodcutter that is equipped with […]
Foil-on-ceramic current-sense resistors offer values down To 2.5 mΩ
The CSRF Series utilizes foil-on-ceramic technology to achieve low values in small chip sizes. The 0.25-W rated CSRF0402 – HP, for example, is available in resistance values from 20 mΩ down to 2.5 mΩ. TCR ranges from ±400 ppm to ±200 ppm are possible depending on resistance value with tolerances as low as 1%. This […]
EMC filters minimize earth leakage currents
The re-engineered and improved the EPCOS LeaXield active leakage current filter is able to minimize earth leakage currents in converter-based drive systems. LeaXield is designed for applications in variable-speed drives such as those in machine tools, pumps, compressors, conveyance systems, and other pluggable devices. In these systems aggregate earth leakage currents can cause RCDs (residual […]
Ultra-precision current-sense chips feature resistance range to 80 mΩ
The CSSH2512 from Stackpole is an all metal current sense chip resistor capable of precision tolerances as low as 0.5% and TCR as low as 15 ppm. The resistance range for the 3-W 2512 size chip has been expanded and now spans from 0.5 mΩ up to 80 mΩ. The high precision combined with the […]
Planar transformers optimized for 200-700 kHz apps
Premier Magnetics announces its PM-PTxxx Series of frequency-optimized planar transformers. The new line, offering models with ratings to 250W, are designed for forward converter, full/half bridge and active clamp applications utilizing switching frequencies between 200 KHz and 700 KHz. Proprietary layout techniques for the circuit board windings result in optimization of transformer impedance and interwinding […]
100-V GaN power transistors target uses in 48-V dc-dc converters
The EPC2052 is a 100-V GaN transistor with a maximum RDS(on) of 13.5 mΩ and a 74-A pulsed output current for high-efficiency power conversion in a tiny 2.25-mm2 footprint. Applications demanding higher efficiency and power density no longer have to choose between size and performance. The EPC2052 measures just 1.50×1.50 mm (2.25 mm2). Despite the […]
Working with higher voltages, Part 1: Voltage boosters
Whether for efficiency or due to the device physics, many applications require voltages ranging in the tens, hundreds, or even thousands of volts; the circuits which produce these voltages start with basic charge pumps and extend to voltage multipliers with simple schematics but many subtleties. Lower-voltage circuitry is the trend, with ICs and designs operating […]
What you need to know about buzzers – reviewing the basic types and technologies
Bruce Rose, Principal Applications Engineer, CUI Inc A buzzer can provide a cost-effective yet intuitive aspect to the user interface of a wide variety of products, such as a home appliance, security panel, door-entry system or computer peripheral. Usually, the choice is between either a magnetic or piezoelectric type. It should be an easy decision, […]
GaN power transistors cover 3.5-A to 11-A range
The GS-065 low current (3.5 A to 11 A) transistor line, developed for sub-1k W power applications, is targeted for consumer level power supply products such as ac adapters for gaming and workstation laptops, TV power, LED lighting, wireless power systems, and appliance motor drives. This new transistor line leverages GaN Systems’ technology leadership in […]