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Discrete power semiconductors play an important role in modern energy supplies. Electrical energy is transported and distributed over wide distances using alternating current (AC). Wind and water turbines but also traditional power stations generate such AC current. Photovoltaic (PV) plants and battery storage systems operate in contrast at direct current (DC) levels. The growing fleet of electric cars can be used as a huge "virtual" energy store: During sunny or windy days, when a lot of excessive energy is available, EVs connected to public charging piles can collect that energy in their batteries. At home and connected to the private wall box, the electricity can be used by the owner or fed back into the mains.

But how does it work? On common electricity mains, bridge rectifiers are used to convert AC into DC. Silicon Carbide (SiC) MOSFETs create from such DC rails high frequent PWM signals, which then are transferred via transformers to the required battery level. SiC Schottkys rectify again that high frequent signal into a DC power output. As such, excessive energy can be stored in the on-board batteries. When it comes to feeding back the electricity to the mains, a similar concept is used to transfer the DC energy from the battery into the AC line.

Diotec Semiconductor AG is a global manufacturer of discrete semiconductor components, headquartered in Germany with over 50 years of experience. Extensive know-how and in-house production from front-end to back-end enables Diotec to offer a wide range of products at short delivery times and competitive prices. With own facilities in Germany, Slovenia, India and China, Diotec is committed to satisfying customers with excellent products and a high level of service.

The production range includes state-of-the art power semiconductors like Bridge, High Voltage and Superfast Efficient Rectifiers, Zener, Schottky, TVS and ESD Diodes, Small Signal Devices, Voltage and Shunt Regulators, MOSFETs and IGBTs. Among the latest developments are automotive qualified Power MOSFETs in small sized QFN packages for battery management systems (BMS), SiC MOSFETs in the high efficient TO-247-4L with Kelvin Source for power inverters, and low forward voltage drop bridge rectifiers for energy saving power conversion.