Taking advantage of the high performance of eGaN® FETs, Rompower Energy Systems has announced a reference design for a tiny, 65 W, 94% efficient AC/DC power adaptor for laptops and other mobile devices.
TUCSON, Az. – June 2017 – Rompower Energy Systems, an internationally recognized research and development company in the field of power conversion, announces the availability of technology for an extremely small, highly efficient AC/DC power adapter. In the quest for higher power density, the efficiency of the adapter is critical in order to decrease the heat dissipation. The reference design is measuring just 3.19 cubic inches in size, this adapter provides 65 W of power at greater than 94% efficiency over the entire input voltage range (90 Vac – 264 Vac). The adapter has a power density of 20 W/in3. This high efficiency means that the device runs cooler than standard AC/DC adapters.
At the core of this adapter is a synchronous rectifier circuit using 150 V, 7 mohm EPC2033 eGaN® FETs from Efficient Power Conversion Corporation (EPC). Power transistors fabricated using gallium nitride (GaN) technology are higher performing than traditional silicon power devices and, in this power conversion application, these eGaN FETs provide an 80% reduction in the driving power, a 25% reduction in on resistance, and 5% less power dissipation all in a very small, 3.19 cubic inch package.
According to Ionel “Dan” Jitaru, founder and President of Rompower, “We are quite proud to have made this breakthrough in size and performance for such an important product, the AC/DC adaptor. With its small size, it will ease the burden of users having to carry a large, clumsy adapter, while enjoying its energy savings and high efficiency.”
Alex Lidow, CEO and co-founder of EPC, commented that, “It is well known in the industry that due to its superior performance at lower costs, GaN is now the material of choice where small size and high performance are essential. This is certainly the case in the highly efficient, extremely small Rompower AC/DC adapter. This innovative reference design, using GaN devices, will become an industry benchmark for its small size and high performance.”
For more information about this AC/DC reference design, contact Ionel “Dan” Jitaru at (520) 326-8401 or by email at [email protected]
About Rompower Energy Systems, Inc.
Rompower Energy Systems is an internationally recognized research and development Company in the field of power conversion. The primary goal of this engineering firm is to develop new technologies designed to meet the needs of the power conversion industry. Rompower has licensed technologies and provides engineering services worldwide to customers in areas such as high-density and high efficiency DC-DC and AC-DC converters, power conversion for electric and hybrid vehicles and industrial power. Rompower has pioneered several trends in power conversion such as soft-transition technologies, full integrated multilayers PCB planar magnetic, synchronized rectifications and recently soft switching through timed energy injection which let to power conversion efficiencies above 99% for multiple kilowatt DC-DC Converters.