Powering Communications

September 2020
Extremely Compact Isolated Auxiliary Supply for SiC-MOSFET Gate Driver

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Figure 1: Topology of a SiC-MOSFET half-bridge with highlighted parasitic inductances

With the increasing spread of high-voltage power semiconductor components build with silicon carbide (SiC) technology, which operate at switching frequencies above 100 kHz, the requirements for their gate control are becoming more and more demanding. Besides the bipolar, positive and negative driving voltages fo
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Date:
09/30/2020

Wireless Charging Without the Need for Digital Control

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Figure 1. AutoResonant LC tank voltage and current waveforms with square wave input at less than 50% duty cycle

Wireless charging is increasingly utilized for small size wearable devices, as it eliminates the need for cables or any exposed connectors on the device. For applications with charge current less than 10 mA, closed-loop control between the wireless charger receiver and the transmitter is not required as the po
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Date:
09/28/2020
Everything You Need to Know About Wi-Fi HaLow

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Figure 1: Wi-Fi spans several frequency bands and meets a variety of connectivity challenges (Source: Wi-Fi HaLow: Expanding Wi-Fi for IoT applications, Whitepaper by Wi-Fi Alliance)

Wi-Fi HaLow is not only the next generation of Wi-Fi to extend distances and increase battery life for Wi-Fi-connected devices, but it also represents an exciting future of wirelessly connected people and devices across the IoT.  Applications are endless, from sensors, actuators and security cameras to ho
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Date:
09/28/2020
Shielded flat-wire coil
This coil is designed for high-efficiency DC/DC converters in automotive applications. The characteristic features of this flat-wire coil with its MnZn core are its high rated current (IR 38-47 A) and a high saturation performance. At an RDC value of 0.6 to 1.1 Ω, its resistance is lower than that of comparable c
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Date:
09/27/2020
Advanced H2S protection of IGBT modules enhances lifetime
Harsh environments with critical levels of H2S can be found especially in paper production, mining, wastewater and petrochemical processing as well as in the rubber industry.H2S is the most critical corrosive contaminant for power semiconductors. During operation, IGBT modules are usually heated up to high temperature l
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Date:
09/27/2020
CoolSiC 62 mm module opens up new SiC applications
The proven 62 mm device has been designed in half-bridge topology and is based on the trench chip technology. It opens up silicon carbide for applications in the medium power range starting at 250 kW – where silicon reaches the limits of power density with IGBT technology. Compared to a 62 mm IGBT module, the
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Date:
09/27/2020
Low Voltage Automotive Buck Converter with Programmable PFM/PWM
With a fully integrated 110mΩ high-side power MOSFET and 80mΩ low-side power MOSFET, it provides high-efficiency step-down DC-DC conversion from 5V and 3.3V input rails. The converter has been developed for use in automotive applications including infotainment systems, instrumentation clusters, telematics, a
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Date:
09/27/2020
New silicon carbide power module for electric vehicles
In the past ten years, Infineon has sold more than 50 million EasyPACK modules with different chipsets for a wide range of industrial and automotive applications. At the same time, the semiconductor manufacturer has successfully established its extensive portfolio of CoolSiC products in industrial applications.
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Date:
09/27/2020
Flex Power Modules looks to grow presence in RFPA market
The organisation operates in the Radio Access Network (RAN) industry. By doing so it is growing its presence in the associated RFPA (radio frequency power amplifier) market, and broadening its range of isolated DC/DC converters for RFPA. With an ever-increasing number of countries and network operators introduci
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Date:
09/27/2020
Panel mounted voltage measurement with LEM DVC 1000 series
The DVC 1000 series offers panel mounted voltage measurement in a compact package, measuring only 29 x 51 x 89 mm, giving a total volume of only 131.6 cm3. Designed to measure a nominal voltage of 1000 VRMS, the DVC 1000 series uses an isolating amplifier, providing very high levels of isolation with a safet
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Date:
09/27/2020
High-Speed Op Amp Eliminates Oscillation from Load Capacitances
The device targets applications such as anomaly detection systems used in measurement and control equipment along with sensors that work with very small signals. The proliferation of IoT in recent years has led to a significant increase in the number of electronic components used for advanced control in a v
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Date:
09/27/2020
1U 1kW programmable DC power supplies
These new products further expand the TDK-Lambda GENESYS+ series, offering up to 1,000W output power in a choice of full or half-rack package sizes. The GENESYS+ series is ideally suited for bench-top or rack-mount equipment in a wide variety of OEM, industrial and laboratory applications. Ten models are avai
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Date:
09/27/2020
AEC-Q200-certified SMD ferrites with peak current load ratings
The respective peak-current capability of the ferrite beads is exactly specified. They are characterized by a high rated current of up to 10 A and extremely low resistances. WE-MPSA ferrite beads are available in the construction sizes 0805, 1206, 1612, 1812, 2220, and 3312 and can also in some cases be supplied
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Date:
09/27/2020
New Ranges of Film Capacitors for Green Energy and Automotive
Constructed with an aluminum canister design, both the C44U-M and C44P-R power film series address the increasing demand for high-power conversion systems in green energy and industrial applications. These capacitors also support power conversion in en-ergy storage systems, IGBT and wide bandgap (WBG) semiconduct
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Date:
09/27/2020
ROHM and LEADRIVE Establish Joint Laboratory
SiC power devices have been adopted increasingly in onboard vehicle chargers and DC/DC converters. These devices provide several advantages compared to silicon-based power devices such as IGBTs. One key benefit: significantly lower losses during both switching and conduction along with being able to operate at hi
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Date:
09/27/2020
SIGA Broadens Wound Components Capability
The move follows SIGA’s acquisition of the business and assets in February of Wolverhampton-based Stabilised Transformers Limited. Their current transformer capability includes open or enclosed types of dry transformers and inductors, and extends through double wound and auto wound components, toroidal wound
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Date:
09/27/2020
Würth Elektronik extends its WE-CBA product family
The SMDs are AEC-Q200 qualified as part of Würth Elektronik's automotive electronics portfolio. WE-CBA features high-quality Ni-Sn electrodes, a very high current carrying capacity up to 6 A, and operating temperatures from -55 to +125ºC. The ferrites, which are available in various specifications, are ideally
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Date:
09/27/2020
Power transformer maker relies on Yokogawa power analyzer
Founded in 1959, SEA supplies high-value assets which are expected to provide a return over decades. Quality, durability, safety and reliable performance are therefore key characteristics that customers are looking for when they specify a new transformer or reactor. Transformers play a crucial role in the transmission
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Date:
09/27/2020
Dev Kit Combines Wireless Power and Data Transmission
Although it was already possible to transfer data from the receiver device to the charging station, bidirectional data transfer can now be combined with the charging process. During wireless power transmission, the device and charging station exchange data through amplitude and frequency modulation. Würth Elekt
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Date:
09/27/2020
Small, low-power 3D magnetic sensor opens up new designs
With an 87 percent smaller footprint and 46 percent less height than previous comparable products, the sensor opens up new design options. Due to the small WLB-5 package (1.13 mm x 0.93 mm x 0.59 mm) and its low current consumption of 7 nA in power-down mode, the new magnetic sensor is also suitable for use
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Date:
09/27/2020
Upgrade to DesignSpark Mechanical 3D CAD modelling software
Version 5.0 offers new features, enhancements and customisation options that have been developed following feedback from users. The new release coincides with the 10-year anniversary of DesignSpark. Developed in conjunction with Ansys Inc., the leading provider of flexible and affordable 3D modelling software
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Date:
09/27/2020
Silicon power transistors with wide bandgap-like performance
The claim is made by developer Search For The Next (SFN). The first devices to use Bizen are members of the QJT (Quantum Junction Transistor) family which will include three parts rated at 1200V/75A, 900V/75A and 650V/32A, available in the industry-standard TO247 or TO263 power MOSFET packages. Of extreme signif
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Date:
09/22/2020
Alliance Memory's 1.8V, 3V SPI NAND Flash Memory Solutions
To meet the growing demand for serial peripheral interface (SPI) NAND flash memory products in the automotive, industrial, communications, and consumer electronics markets, Alliance Memory announced the new AS5F series of 1.8V to 3V devices with densities from 1Gb to 8Gb and high-speed clock frequencies up to 12
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Date:
09/21/2020
Front-End Power Supplies for Server, Network Applications
Bel Power Solutions announced the TET2200 Series, 2200 W power supplies that bring Titanium level efficiency to servers, storage and networking equipment. With AC-DC power-factor-corrected (PFC) and high voltage DC-input variants, TET2200 Series power supplies provide a main output of 12 VDC for powering intermediate bu
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Date:
09/18/2020
TTI Stocks Amphenol 12G MCX Connectors for Broadcast
TTI, Inc., carries a wide selection of Amphenol RF's high-frequency MCX connectors. Amphenol RF's line of high-frequency MCX connectors are designed to support data transfer rates of up to 12Gbps enabling the transmission of high resolution uncompressed video signals. These connectors provide 4K and Ultra-HD
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Date:
09/14/2020
DDR5 Data Buffer for High-Performance Cloud Service Apps
Renesas Electronics Corporation announced a new high-speed, low-power DDR5 data buffer for data center, server, and high-performance workstation applications. Advancements over the past few years in real-time analytics, machine learning, HPC, AI, and other memory and bandwidth-hungry applications have fuel
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Date:
09/09/2020
Broadband LTE/LPWA Antenna for CAT-M & NB-IoT Applications
AVX Corporation released a new embedded, universal broadband, LTE/LPWA antenna (1004795) as a standard, off-the-shelf solution designed for maximum versatility. Compatible with all major worldwide wireless carriers and a variety of common communications protocols, the new antennas meet steadily increasing cross-market dem
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Date:
09/08/2020
Low-cost DC-DC converter ranges
They all focus on a simple and effective design approach which is unique to those Traco Power Products. By innovative engineering we have come up with an electrical design which minimizes component and labor costs. Key focus of those designs was to maximize the amount of automatization of the manufacturing process.
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Date:
09/07/2020
What are the advantages of SiC-based designs and how can you implement them?

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Figure 1 Technology positioning – Si, SiC and GaN

The global trends - such as digitalization and energy efficiency - that have emerged and accelerated in the past few years pose new challenges to the manufacturers as well as the semiconductor market. Developing power semiconductor devices that contribute to highly efficient power management systems is on the ag
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Date:
09/03/2020
Energy-Efficient Design for mmWave-enabled NOMA-UAV Networks

Illustration of the mmWave-enabled NOMA-UAV network.

Non-orthogonal multiple access (NOMA) and millimeter-wave (mmWave) are two crucial techniques of 5G to meet the explosive capacity demands. On the other hand, UAVs deployed as aerial base stations are potential to provide ubiquitous coverage and satisfy users' multifarious requirements due to their flexibility and
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Date:
09/02/2020
Stackpole Improves Thick Film Resistor Power Ratings
Electronic devices that require downsizing or increased functionality may utilize high power surface mount resistors to accomplish this. High power surface mount chip resistors utilize materials designed for the higher temperatures associated with higher power levels. Stackpole's RMCP series is a thick film techno
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Date:
09/02/2020
The First ESCC QPL Approved Polymer Electrolytic Capacitors
AVX Corporation is the first manufacturer qualified to supply polymer electrolytic multianode capacitors for use in European Space Agency (ESA) programs. The company’s well-proven TCS Series COTS-Plus Solid Polymer Electrolytic Multianode Chip Capacitors, which are manufactured at the ESA-qualified AVX Czech Re
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Date:
09/01/2020