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Power Supplies & Magnetics

March 2020
Trends in Electromagnetic & Magnetic Components

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Figure 1 - Complete 3D CAD tool suites offer capability to create production level drawings

For many designers these magnetic and electromagnetic components are considered very “low tech”. The reality is, however, that much technology and know-how is applied to designing and constructing these passive components: moving their capability inexorably forward. Technological developments - energy
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Date:
03/30/2020
Powering Processors and FPGAs with the New TDK µPOL

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Figure 1: A typical ‘power tree’ for a Xilinx Zynq 7 device

Minimising power consumption is a high priority and in digital devices, it is directly related to voltage swing and data rates. Consequently, supply voltages have steadily reduced from 5V to sub-1V with sub-sections of devices having separate supply rails: processor cores between 0.56V to 0.88V on next generation 7n
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Date:
03/30/2020
Selecting a Power Supply for Operation on Three-Phase Input

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Figure 1: Delta configuration

Power supplies with a rated output of greater than 2,500W often require, or have an option for, a high voltage three phase AC input. A load of 3,000W, for example, operating from a single phase 230Vac input will consume 13A (3000W / 230V = 13A). The same load operating from a 400Vac three phase input will draw jus
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Date:
03/30/2020

FPGA Power System Management

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Figure 1. One possible FPGA power tree: a high voltage input supply (for example, 12 V, 24 V, or 48 V) is stepped down to an intermediate voltage bus feeding the POL regulators that power the FPGA

Since the 1980s, FPGA resources, speed, and efficiency have improved rapidly, making FPGAs the go-to solution for a wide variety of computing and processing applications, especially when production volume doesn’t justify application-specific integrated circuit (ASIC) development costs. FPGAs have advanced to
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Date:
03/30/2020
The APEC That Could've Been
The worst collateral damage of COVID-19 is the decimation of global commerce, and trade shows have been hit especially hard – tough to practice “social distancing” with a few thousand people (or more) clustered together. And one of the most unfortunate victims of this new, quarantined reality was the 2020 Ap
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Date:
03/30/2020
UnitedSiC Announces New Global Partnership with Digi-Key
The new partnership willprovide Digi-Key customers with worldwide, 24-hour availability of UnitedSiC’s Silicon Carbide product portfolio - including the only standard gate drive SiC devices currently in the market.   Yalcin Bulut, VP of Global Sales and Marketing at UnitedSiC, said: “This partnership focuses
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Date:
03/19/2020
OptiMOS™ IPOL voltage regulators with COT engine
      This product family is designed for today’s server, base station and telecom (operating at 85˚C ambient temperature) and storage applications requiring both high efficiency and high density. The IR3887M is the smallest 30 A device on the market. Fusing Infineon’s latest FET gene
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Date:
03/19/2020
KEMET Introduces Automotive Metal Composite Power Inductors
The MPXV product offering enhances the company’s METCOM range and is AEC-Q200 qualified for use in the automotive sector.   The new power inductors provide efficient power conversion while minimizing Electromagnetic Interference (EMI) and are ideal for use in DC to DC switching power supplies for t
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Date:
03/19/2020
Expanded High Power Portfolio for Industrial Applications
Bel Power Solutions announced the expansion of their high power portfolio with the TXP4000 Series, a maximum 4000 W AC-DC power supply suitable for industrial, process and control, railway and machinery applications. The TXP4000 Series of AC-DC converters employs a PFC front-end stage and an isolated DC-DC sta
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Date:
03/19/2020
Shielded Inductors Meet High-Current Density Requirements
Bourns, Inc., announced the addition of nine new series to its SRP series power inductor line. These new Model SRP inductor families are designed to meet high current and low radiation requirements in a small form factor. Bourns' latest inductors feature a coil that is wound with either round or flat wire completely pre
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Date:
03/16/2020
30W High Power Density DC/DC Converter Series URB_YMD-30WR3
This new series URB_YMD-30WR3 comes in 1x1 inch standard package and its power density increased by 50.4% compared to 2x1 inch package products with the same output power. Besides, this URB_YMD-30WR3 series features 18-75V ultra wide input voltage range and operating temperature range of -40℃ to +85℃. Protectio
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Date:
03/13/2020
PCIM Europe 2020 Postponed till July
COVID-19 has claimed another victim – on Friday, PCIM Europe 2020 was officially postponed. The good news is that PCIM will be delayed (until July 28-30) instead of cancelled. And the decision was almost entirely out of the show organizers’ hands. German Health Minister Jens Spahn recently called for
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Date:
03/13/2020
RS Components adds STMicroelectronics’ surge suppression range
Designed to handle 8/20µs and 10/1000µs voltage transients and protect circuits and equipment from power surges, the ST portfolio of Electrical Over-Stress (EOS) TVS Flat devices includes industrial and automotive grade devices. Delivering a lower cost per watt ratio, the portfolio of TVS Flat package variants ar
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Date:
03/12/2020
XP Power launches 20W & 40W PCB mount AC-DC power supplies
Complementing the previously released 3W, 5W and 10W models, the VCE20 and VCE40 series provide 20 and 40 Watts of power respectively and offer an encapsulated version as well as a lower cost open frame version, both of which are suited to PCB mounting. The compact (VCE20 – 63.5mm x 30.5mm x 21.8mm / VCE40 - 85.0mm
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Date:
03/12/2020
Flex adds telecom version to BMR480 DC-DC converters
The converter, called the BMR480 0113/034, provides an extended input voltage range below 40Vin, as required for telecom power conversion applications. It is optimized for a wider input voltage range of 36Vin to 60Vin, compared to the standard converters in the BMR480 series. The new version also has an output volt
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Date:
03/12/2020
Schaffner EMC products available on the EPLAN Data Portal
EPLAN is a powerful information source for global design engineering. The data portal offers customers shared by Schaffner and EPLAN benefits from the integration of device data and CAD which can be used digitally and efficiently in design engineering. EPLAN is a powerful planning tool that is used as a worldwide standa
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Date:
03/12/2020
600 V CoolMOS PFD7 series provides ultra-high power-density
The devices are suitable for ultrahigh power-density designs such as chargers and adapters as well as for low-power drives and specific lighting applications. Robustness and reliability gains together with increased efficiency, minimized switching losses and improved thermal behavior make this product fami
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Date:
03/12/2020
IEC 63171-6 published: Standard industrial interface for SPE set
On January 23, 2020 the international standard for Single Pair Ethernet interfaces in industrial applications was published with IEC 63171-6. The editor is the IEC committee SC 48B copper connectors. The mating face standard IEC 63171-6 T1 Industrial Style was the first standard submitted by HARTING to SC 48B for
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Date:
03/12/2020
RS Components adds Isabellenhütte precision power resistors
Produced using two different proprietary manufacturing technologies known as ISA-Plan and ISA-Weld, Isabellenhütte’s current-sense resistors meet stringent criteria with regard to thermoelectric voltage, long-term stability and inductance that allow electronics designers to optimise power use on PCBs more e
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Date:
03/12/2020
100 V Rated Voltage for 1005-Size Automotive Multilayer Ceramic Capacitors
The capacitor comes in a 1.0 x 0.5 x 0.5 mm package and features a rated voltage of 100 V and a capacitance of 0.01 μF.   We have sophisticated the materials and process technologies nurtured by us to improve rated voltage to 100 V compared to our conventional product UMR105 B7103KV (1.0 x 0.5 x
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Date:
03/12/2020
TAIYO YUDEN Creates 105°C Capable Lithium Ion Capacitor
The new capacitor has an increased operating temperature limit of 105°C Example applications for this newcapacitor include peak assistance and backup power supply in servers, drive recorders, and smart meters. When the product is used at 3.5 V, the upper limit of the operating temperature can reach +105°C,
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Date:
03/12/2020
OptiMOS Source-Down 25 V power MOSFET in PQFN package
The Source Down is the new industry standard packaging concept. The first wave of power MOSFETs launched in this new package is the OptiMOS TM 25 V in a PQFN 3.3x3.3 mm. The device sets a new industry benchmark in MOSFET performance, reducing on-state resistance (R DS(on)) and offering superior thermal management c
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Date:
03/12/2020
MOSFET Driver for Synchronous Rectification
The driver is designed for AC-DC rectification circuits in general consumer applications, notebooks, and USB adapters. The APR348 is capable of driving the external MOSFET in both high-side and low-side secondary-side synchronous-rectifier configurations. This flexible and efficient device supports secondar
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Date:
03/12/2020
APEC 2020 Cancelled over Coronavirus Concerns
For the first time in 35 years, the show won’t go on for the Applied Power Electronics Conference. On Tuesday, show organizers and sponsors decided to cancel APEC 2020. We all know why – the COVID-19 coronavirus has already claimed South by Southwest (SXSW),
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Date:
03/10/2020
SiC MOSFET Gate-Driver Design for Efficiency and Reliability

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Figure 1. A large driver source current is needed to charge gate capacitances quickly. Source: ON Semiconductor TND6237/D

Silicon carbide power MOSFETs are moving closer to approximate price parity with conventional silicon MOSFETs or IGBTs. Their key advantages are lower RDS(ON) and reduced switching losses, breakdown voltages comparable to IGBTs, and greater temperature capability. These give designers of power-conversion systems su
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Date:
03/02/2020
Gearing Up for APEC
Across the Atlantic this month, all the talk is about APEC, the first real show of the year to focus on the power industry. This year, the event will take place in New Orleans, which should bring a touch of French Quarter sparkle to the event. However, in the Ernest N. Morial Convention Center the focus will be
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Date:
03/02/2020
Wide Band-Gap Semiconductors in the Big Easy
It’s that time of year again – no, not the one where weird relatives stink up the joint and some fat guy zips around the world with magical caribou. I’m talking about APEC. The big one. The crown jewel. The World Series of power. And with it comes arguably the hottest topic in our fair industry – wide ba
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Date:
03/02/2020