Issue link: https://resources.mouser.com/i/1505196
12 \ VISHAY Industry 4.0 and Beyond Applications • Intermediate bus converters (IBC) for 48V to 12V conversion in datacenters and servers • DC/DC converters in telecom radio units and industrial automation • Mild hybrid cars and low-speed electrical vehicles with 48V board nets Abstract With the introduction of 100V DS gallium-nitride (GAN) transistors by the Efficient Power Conversion Corporation (EPC) and Infineon, their usage in 48V systems has become increasingly popular, with their full potential being realized in applications with higher switching frequencies and power density requirements, such as DC/DC converters. This is due to the devices' virtually zero Q rr , in addition to lower electromagnetic radiation emissions and switching losses compared to silicon transistors. However, a converter´s efficiency strongly depends on taking a suitable approach to current sensing and selecting the proper energy storage inductors. In this article, we explore how high efficiency can be achieved with the use of Vishay power inductors. Topologies In any converter topology, there´s always a trade- off between design complexity, component count, voltage ratio flexibility, and solution size and efficiency. Transformer-based solutions offer high efficiency with the drawback of a relatively fixed voltage ratio, while flying capacitor converters have a high component count. Synchronous buck converters, however, have a low component count and an easily modifiable output voltage. To achieve high efficiency in these circuits, storage inductors are a key element of their design. Using Vishay Power Inductors and Current Sense Solutions in GaN DC/DC Converters