Transphorm partners with Weltrend Semiconductor to introduce gallium nitride system-level packaging devices

     Transphorm, a leading global supplier of gallium nitride (GaN) power semiconductors, and Weltrend Semiconductor, a global leader in integrated circuits for adaptor USB-C PD controllers, announced a collaboration to launch a 100-watt USB-C PD power adapter reference design. The reference design circuit uses the system-level package (SiP) SuperGaN power control chip WT7162RHUG24A, developed jointly by the two companies, to achieve 92.2% efficiency in a quasi-resonant flyback (QRF) topology.

     This reference design is the second QRF Topology USB-C PD adapter control board from Weltrend Semiconductor to use the WT7162RHUG24A. Earlier this year, Weltrend Semiconductor released a 65-watt adapter control circuit. Using the same SuperGaN SiP for both adapter panels, customers are able to achieve economies of scale with a 100 watt product design at a better cost than competing solutions. This also shows that the 65-watt SuperGaN SiP also meets the performance and thermal requirements of the 100-watt design.

     Philip Zuk, Transphorm's senior vice president of Business Development and marketing, said: "Gallium nitride-based integrated circuits can simplify design, the idea is great, but it has to be 'integrated', it has to be a single integrated device with the necessary controller inside the package. This is where Weltrend Semiconductor and Transphorm's SuperGaN SiP come in. Our system-level packages are simple, normally closed solutions that do not require protection of circuits, drivers or external controllers. In addition, the same SiP is also available for 65-watt and 100-watt power adapters. Products and solutions with these highlights truly demonstrate the comprehensive performance benefits and robustness inherent in gallium nitride. Currently, this is only possible with Transphorm's SuperGaN platform."

     Wayne Lo, Vice President of Marketing at Weltrend Semiconductor, said: "With our growing market share in the AC-DC power supply market, it is important for us to ensure that we provide the best and most practical solutions to the market. At present, the power adapter market is constantly innovating to take advantage of the attractive performance advantages of gallium nitride materials, and it is our job to ensure that customers can benefit from these advantages - not only in terms of technology, but also in terms of a better and more comprehensive return on investment (ROI). A SiP that meets the physical design requirements of the adapter while working with different models across the entire adapter family is a win-win for Weltrend Semiconductor, Transphorm, and our customers. This newly released 100-watt reference design is a strong demonstration that our technology can be competitive in the lower end of the market, and this is only the beginning of the future."