Power Semiconductors

February 2021
Power Supply Includes an Enhanced 10 Channel Output
Lumina Power has announced the release of the new 10 Channel LPS series general purpose high-current, high-voltage power supplies for the Electroplating and Specialty Markets. "The new LPS Power Supply offers short lead times and is a response to marketplace demand for enhanced capability in applicati
. . . Read More
Date:
02/12/2021

Keysight, Transphorm Power Reference Design Lowers Costs
Keysight Technologies, Inc. and Transphorm, Inc. have announced the availability of a new power supply reference design that enables engineers to identify and correct design errors before building hardware, thereby lowering product costs and speeding time to market. Switched-mode power supplies provide greater e
. . . Read More
Date:
02/10/2021
Titanium Efficiency 3.2kW Power Supply for OCP, Datacenters
Bel Power Solutions announced the expansion of their portfolio to include the TET3200-12-069RA, a 3200 W Titanium efficient AC-DC front-end power supply that can convert up to 277 VAC into a main output of 12 VDC for powering intermediate bus architectures (IBA) in high performance and high reliability servers, ro
. . . Read More
Date:
02/04/2021
50V, 400V, 500V Output Programmable Power Supplies for EVs
TDK Corporation announces the introduction of 50V, 400V and 500V output models to the TDK-Lambda GENESYS+ series of programmable DC power supplies. With output power levels of 5kW, 10kW and 15kW in 1U, 2U and 3U high 19” rack-mount packages, the new G50, G400, G500, GSP50, GSP400 and GSP500 models are fully co
. . . Read More
Date:
02/03/2021
Switch Node Layout Considerations for EMC

Click image to enlarge

Figure 1: MPQ4430 Buck Converter Example

The circuit node is where one or more power semiconductor switches (such as a MOSFET or diode) connect to a magnetic energy-storing device (such as an inductor or transformer winding). The switching signals of this circuit node contain fast-switching dV/dt voltages and dI/dt currents that can easily couple onto surr
. . . Read More
Date:
02/01/2021
iCoupler Technology Benefits GaN Transistors in AC/DC Designs

Click image to enlarge

Figure 1. Typical AC/DC power supply for telecom and server applications

Highly efficient AC/DC power supplies are key to the evolution of the telecom and datacom infrastructure, as power consumption grows rapidly due to hyperscale data centers, enterprise servers, or telecom switching stations. However, the power electronics industry has reached the theoretical limit of silicon MOS
. . . Read More
Date:
02/01/2021
Enhancing Efficiency by Reducing Converter Stages and RON

Click image to enlarge

Figure 1: RON is a product of the cumulative resistances from the drain to the source of a MOSFET device

The latest ICs sport faster processors, denser memories/storage, and a wealth of features while increasing reliability and proving lower power usage. Moving to lower processor nodes and relying on lower operating voltages enable these enhancements without dramatically increasing die area, cost, and the need for
. . . Read More
Date:
02/01/2021
Fixed Ratio Converters Boost Battery Powered Systems

Click image to enlarge

Figure 1: To make EVs and charging stations compatible, independent of whether they use the same voltage, the power delivery network uses a Vicor non-isolated fixed-ratio bus converter module (NBM) to convert either 800V to 400V or 400V to 800V at 6kW. This high-efficiency, high-density, scalable solution enables EVs of different battery voltages to utilize the same charging stations

Fixed-ratio convertershave power density, efficiency and flexibility attributes that can enable higher-performing power delivery networks (PDNs). This is true even when faced with wide-output-voltage-range power sources, such as batteries or renewable energy sources. Unlike more popular, mainstream regulated DC
. . . Read More
Date:
02/01/2021
The Speed at Which Power is Changing for Industry 4.0

Click image to enlarge

Figure 1. The key technologies driving the 4th industrial revolution are impacting the power supply industry in more ways than ever before. How will power designers respond?

Industry 4.0’s impact will dramatically change the world in the same way the preceding industrial revolutions did, only this time automation, artificial intelligence and process power will lead the way. We have already witnessed sci-fi-like innovation in a wide range of industries, from healthcare and telecom to
. . . Read More
Date:
02/01/2021
A Push-Pull Topology for DC-DC Converter 12 V EV Applications

Click image to enlarge

Figure 1. A push-pull converter helps to streamline an isolated power supply design in 12V EV applications.

DC-DC converters are employed in many high voltage applications such as ultra-capacitor energy banks, motor drives, high voltage battery systems and solar inverters. They’re one of the fundamental blocks of a power electronic design and are used to ‘condition’ voltage from one level to another – either to
. . . Read More
Date:
02/01/2021
When to Use Single vs. Dual DC/DC Buck Regulators

Click image to enlarge

Figure 1: Input current and ripple with in phase switching (red) and out-of-phase switching (blue)

There are trade-offs to make when choosing between a single output regulator and a dual output regulator. In this article, I will discuss the advantages of both and highlight when to use one or the other, using the single 6-A TPS543620 output DC/DC regulator and dual 6-A TPS541620 output DC/DC regulator from Texa
. . . Read More
Date:
02/01/2021
Accelerate Your USB Power Delivery Battery Charger Designs

Click image to enlarge

Figure 1. USB Type-C and USB Power Delivery are bringing the conveniences of fast data transfer and charging to portable devices

In devices operated by high-capacity 2S batteries, USB Power Delivery (PD) is a boon as it enables fast charging that gets these products back in operation with little downtime (Figure 1). Also, many applications that previously used AC-DC barrel adapters are migrating to USB PD for convenience and standardization
. . . Read More
Date:
02/01/2021
End of the Winter Blues
Welcome to the February issue of PSD. It has felt a longer than normal winter here in Scotland under lockdown, but both the winter and the lockdown seem to be coming to an end, albeit it little bit more slowly for the latter. With vaccines starting to become widely available, hopefully we can get back into our of
. . . Read More
Date:
02/01/2021
The Object of Power is Power
In our February Editorial Call, we stated that “no topic is more central to our publication than power supplies.” And it’s never been more true. It’s our raison d'être. Our purpose. Our mission statement. And it defines us as a brand. Combine that with magnetics and you truly have one of the most e
. . . Read More
Date:
02/01/2021