Energy Efficiency

May 2021
ROHM Launches
ROHM Semiconductor announced its “Environmental Vision 2050” program, which will contribute to achieving a sustainable society by 2050. In addition to pursuing zero carbon emissions (zero CO2 emissions), ROHM will promote business activities in harmony with the natural cycle to protect biodiversity ba
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Date:
05/21/2021

Advanced Model to Improve Safety of Next-Generation Reactors

Pebble-bed reactors use passive natural circulation to cool down, making it theoretically impossible for a core meltdown to occur.

When one of the largest modern earthquakes struck Japan on March 11, 2011, the nuclear reactors at Fukushima-Daiichi automatically shut down, as designed. The emergency systems, which would have helped maintain the necessary cooling of the core, were destroyed by the subsequent tsunami. Because the reactor could no
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Date:
05/21/2021
PSDcast – The U.S. Ranks Very Low in the Battery Supply Chain

CEO of Almonty, Lewis Black

A recent report put China atop the list of the lithium-ion battery raw material supply rankings, with 80% of global refining capacity for raw materials needed for batteries. While the U.S. comes in at a rather paltry 15th.
Date:
05/20/2021
A gate driver solution for EMI mitigation without compromise

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It is not just efficiency that benefits from faster switching. There are further advantages, including a reduced BoM, and as efficient designs give off less heat, they don’t require such large heatsinks, leading to smaller and cheaper system solutions. However, high switching speeds have a downside that can of
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Date:
05/18/2021
DC-DC Demonstration Board Powered by GaN FETs
EPC announces the availability of the EPC9137, a 1.5 kW, two-phase 48 V – 12 V bidirectional converter that operates with 97 % efficiency in a very small footprint. The design of this demonstration board is scalable; that is, two converters can be paralleled to achieve 3 kW or three converters can be paralleled to
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Date:
05/11/2021
Server / Telecom - Si and WBG solutions: Part 3 of 4 Editorial Series Sponsored by Infineon; Towards Efficient, Reliable, and Cost-Effective Power Supply Units for 5G Telecom Rectifiers Applications Using Wide-Bandgap Semiconductors

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Figure 1: Key features required for AC-DC SMPS in the latest generation of telecom applications

The 5G spectrum has been released in several countries worldwide and already in commercial use. 5G is accelerating and promises to change our lives thanks to large bandwidth, massive connection, and ultra-low latency. On top of this network evolution, we need to consider the advancements in the so-called mobile ed
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Date:
05/07/2021
Dead Lithium Batteries Could Undergo Unique Recycling Process

American Resources Corp. and Purdue University have teamed to advance an environmentally safer method that recycles rare-earth metals to advance clean energy electronic technologies used in hard disk drives, electric vehicles, wind turbines and other electronics.

American Resources Corp., a socially responsible supplier of high-quality raw materials, announced Thursday (May 6) an expansion of its existing sponsored research program with Purdue University. The agreement will focus on advancing the purification of critical and rare-earth elements ("REEs"). The partnership builds on
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Date:
05/07/2021
Server / Telecom - Si and WBG solutions: Part 2 of 4 Editorial Series Sponsored by Infineon; How to Reap the Benefits of  Wide-Bandgap Semiconductors in Server Applications

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Figure 1: Comparison of temperature dependency of the on-state resistance for different semiconductor technologies, such as Infineon’s CoolMOS™, CoolSiC™, and CoolGaN™

The emergence of cloud-based internet services, artificial intelligence, and cryptocurrency has initiated a strong growth of processing power in data centers worldwide. Since the data centers have also been facing rising electricity and real estate prices, there is a clear trend towards highly efficient and co
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Date:
05/06/2021
When the Greek God Aeolus Meets the Norse Goddess Skadi!

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Figure 1 – Wind-farm Markbygden 1101 up-North Sweden deploying more than 1100 wind turbines (Picture: PRBX / Courtesy of Svevind AB Markbygden 1101)

Although solar is getting a large amount of attention, wind turbines are stealthily and rapidly gaining market share. In less than 10 years wind turbines have become more efficient and more powerful, with the latest generation units being almost as high as the Eiffel Tower and able to deliver 13 megawatts of po
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Date:
05/03/2021
Server / Telecom - Si and WBG solutions: Part 1 of 4 Editorial Series Sponsored by Infineon; Innovative Silicon Solution for Highest PFC Efficiency

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Figure 1: Circuit diagram of the proposed solution using CoolMOS™ in a half-bridge configuration

Introduction As a result of the pandemic that lately has had a significant impact on our lives, communication networks became a crucial part of critical social infrastructure. To achieve the required server capacities and fast connectivity and address the challenges of this unprecedented situation and, highly
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Date:
05/03/2021
The Next Revolutionary Step for Low Power

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Figure 1. Simplified circuit of the active clamp flyback (ACF) topology

Introduction It is estimated that 4 billion chargers and adapters are produced globally every year. They charge our mobile phones, tablets, wearables, and the myriad of other consumer electronic goods we consume continuously. The cost of the adapter is undoubtedly a significant consideration for original equipme
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Date:
05/01/2021