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GaN enhancement for 48V DC/DC power conversion in servers and automotive

GaN enhancement for 48V DC/DC power conversion in servers and automotive
Efficient Power Conversion (EPC) has recently introduced two new, 100V, GaN devices that are able to handle 48V server and automotive needs. I will be examining the 48V server power solutions to the processor as well as in automotive and energy storage systems (See my article Bi-directional DC/DC power supplies: Which way do we go?) bi-directional supplies, in an EDN exclusive article coming up in the near future. GaN power transistors MUST be a part of these kinds of architectures; from my point-of-view there is no better alternative. Planet Analog Read article Read more
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EPC partners with Würth Elektronik eiSos to present Trilogy of Wireless Power Transfer

EPC partners with Würth Elektronik eiSos to present Trilogy of Wireless Power Transfer
The "Trilogy of Wireless Power Transfer" consists of three parts: Basics Principles of Wireless Power Transmission, Wireless Power Transfer Systems and Applications. The first part of the book explains the basic physical principles and the different methods of contactless power transmission. Furthermore, the leading standards are presented in this part. The second part describes wireless power transfer systems, the different topologies of wireless power transmission, the right selection of transmitter and receiver coils required to increase efficiency, and the selection of transistors, for ... Read more
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It's Time to Rethink Power Semiconductor Packaging

It's Time to Rethink Power Semiconductor Packaging

When the issue invariably turns to the packaging of the power semiconductor – transistor, diode, or integrated circuit – the requests for improvement fall into six categories:

1. Can you make the package smaller?
2. Can you reduce the package inductance?
3. Can you make the product with lower conduction losses?
4. Can you make the package more thermally efficient?
5. Can you sell the product at a lower price?
6. Can you make the package more reliable?

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Powering graphics processors from a 48-V bus

Powering graphics processors from a 48-V bus
New converter topologies and power transistors promise to reduce the size and boost the efficiency of supplies that will run next-generation Artificial Intelligence (AI) platforms. In all the topologies with 48 VIN, the highest efficiency comes with using GaN devices. This is due to their lower capacitance and smaller size. With recent pricing declines in GaN power transistors, the cost comparison with silicon-based converters now strongly favors GaN in all the leading-edge solutions. Power Electronic Tips March, 2019 Read article Read more
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The Power and Evolution of GaN, Part 6: GaN Technology Adoption and Roadmap

The Power and Evolution of GaN, Part 6: GaN Technology Adoption and Roadmap
In the final installment of this series, how GaN has met the requirements to displace silicon is explored. As the adoption rate of GaN explodes, it is important to remember that, while GaN has made many advancements in just a few short years, it is still far from its theoretical performance limitations and thus there are profound improvements that can continue to be achieved. In time, the performance and cost advantages of GaN-on-silicon will result in a majority of applications currently using silicon-based devices converting to the smaller, faster, cheaper, and more reliable GaN ... Read more
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The Power and Evolution of GaN, Part 5: Building a Low Cost, High Efficiency 12 V to 1 V POL Converter with eGaN FETs and ICs

The Power and Evolution of GaN, Part 5: Building a Low Cost, High Efficiency 12 V to 1 V POL Converter with eGaN FETs and ICs
As an example of the contribution to performance GaN devices can make to one of these mainstream applications, a traditional silicon application, the 12 V – 1 V point-of-load (POL) DC/DC converter will be examined. An eGaN IC based 12 V to 1 V, 12 A load converter yielding a peak efficiency of 78% at 5 MHz with a power density of at least 1000 W/in3, all with a cost below $0.20 per watt will be shown Power Systems Design January, 2019 Read article Read more
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Why go for GaN?

Why go for GaN?
GaN technology has matured to a point where it can challenge traditional silicon technology.  Gallium nitride(GaN)-on-silicon low voltage power devices have enabled many new applications since commercial availability began in 2010. New markets, such as light detection and ranging (LiDAR), envelope tracking, and wireless power, emerged due to the superior switching speed of GaN. These new applications have helped develop a strong supply chain, low production costs, and an enviable reliability record. All of this provides adequate incentive for the more conservative design ... Read more
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The Power and Evolution of GaN, Part 4: Bringing Precision Control to Surgical Robots with eGaN FETs and IC

The Power and Evolution of GaN, Part 4: Bringing Precision Control to Surgical Robots with eGaN FETs and IC
In this series, how the superior switching speed of gallium nitride (GaN)-on-silicon low voltage power devices have enabled many new applications is being discussed. These applications are transforming industries such as light detection and ranging (LiDAR) for autonomous vehicles, envelope tracking for 5G communications and large surface area wireless power for the home and office. In this article, how GaN power devices are transforming medicine by bringing precision control to surgical robots is examined. Power Systems Design Read article Read more
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The Power and Evolution of GaN, Part 3: How to Build an Ultra-Fast High-Power Laser Driver using eGaN FETs - That Sees Farther, Better, and at a Lower Cost!

The Power and Evolution of GaN, Part 3: How to Build an Ultra-Fast High-Power Laser Driver using eGaN FETs - That Sees Farther, Better, and at a Lower Cost!
In the first article in this series, how gallium nitride (GaN)-on-silicon low voltage power devices have enabled many new applications, such as light detection and ranging (LiDAR), envelope tracking, and wireless power was discussed. In this article, more detail on one of these leading applications, LiDAR, will be explored. How GaN is being used to make LiDAR systems that see farther, with higher resolution, and at lower cost will be shown. Power Systems Design Read article Read more
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Gallium nitride is the silicon of the future

Gallium nitride is the silicon of the future

Last week, Anker debuted a tiny new power brick, crediting its small size with the component it uses instead of silicon: gallium nitride (GaN). It’s the latest example of the growing popularity of this transparent, glass-like material that could one day unseat silicon and cut energy use worldwide.

The Verge
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Building the Smallest and Most Efficient 48 V to 5 - 12 V DC to DC using eGaN FETs and ICs

The Power and Evolution of GaN – Part 2 of 6 part series

Building the Smallest and Most Efficient 48 V to 5 - 12 V DC to DC using eGaN FETs and ICs
With the power architecture transition from a 12 V to a 48 V bus power distribution in modern data centers, there is an increased demand to improve 48 V power conversion efficiency and power density. In this context, DC-DC converters designed using eGaN® FETs and ICs provide a high efficiency and high power density solution. Additionally, with the advent of 48 V power systems in mild-hybrid, hybrid and plug-in hybrid electric vehicles, GaN transistors can provide a reduction in size, weight, and Bill of Materials (BOM) cost. Power Systems Design Read article Read more
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GaN-Based VRM Hybrid Converter Achieves 95% Efficiency for 48V to 1-2V/10A Power Conversion

GaN-Based VRM Hybrid Converter Achieves 95% Efficiency for 48V to 1-2V/10A Power Conversion

With the emergence of the 48V bus architecture, a new hybrid converter using gallium nitride (GaN) transistors can be employed which achieves a peak efficiency that exceeds 95% and with 225W/in3 power density. Of great interest for data center applications, where light load efficiency is critical for energy savings, the converter efficiency is kept higher than 90% down to a 20% load.

PowerPulse
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GaN-on-Silicon Power Devices: How to Dislodge Silicon-Based Power MOSFETs

GaN-on-Silicon Power Devices: How to Dislodge Silicon-Based Power MOSFETs
Gallium nitride (GaN) power transistors designed for efficient power conversion have been in production for seven years. New markets, such as light detection and ranging, envelope tracking, and wireless charging, have emerged due to the superior switching speed of GaN. These markets have enabled GaN products to achieve significant volumes, low production costs, and an enviable reliability reputation. All of this provides adequate incentive for the more conservative design engineers in applications such as dc-dc converters, ac-dc converters, and automotive to start their evaluation process. ... Read more

The Power and Evolution of GaN

The Power and Evolution of GaN
Gallium nitride(GaN)-on-silicon low voltage power devices have enabled many new applications since commercial availability began in 2010. New markets, such as light detection and ranging (LiDAR), envelope tracking, and wireless power, emerged due to the superior switching speed of GaN. These new applications have helped develop a strong supply chain, low production costs, and an enviable reliability record. All of this provides adequate incentive for the more conservative design engineers in applications, such as dc–dc converters, ac–dc converters, and automotive to start their evaluation ... Read more
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Designing LiDAR and more into Autonomous E racing

Designing LiDAR and more into Autonomous E racing

The reason eGaN FETs (and now ICs) are used in all the LiDAR systems for autonomous cars, and now autonomous race cars, is that they enable much higher resolution (due to extremely short laser pulses), faster image speed (due to short laser pulses), and the ability to see greater distances with high accuracy (due to fast laser pulses at very high current).

Planet Analog
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