Efficiency and Reliability Enhanced with 1200 V SiC Schottky Diodes

Featuring a merged PIN Schottky (MPS) design, the latest diodes from Vishay Semiconductors are set to revolutionize switching power designs by combining high surge current robustness with low forward voltage drop, capacitive charge, and reverse leakage current. This innovative approach aims to enhance efficiency and reliability in various applications.

The newly released next-generation SiC diodes are available in a range of sizes, from 5 A to 40 A devices, housed in TO-220AC 2L, TO-247AD 2L, and TO-247AD 3L through-hole packages, as well as D²PAK 2L (TO-263AB 2L) surface-mount packages. These diodes boast a low capacitance charge down to 28 nC, thanks to their MPS structure, which incorporates backside thinned via laser annealing technology to achieve a reduced forward voltage drop of just 1.35 V.

One of the key advantages of these Gen 3 devices is their low typical reverse leakage current, which can go as low as 2.5 µA at 25 °C. This feature significantly reduces conduction losses, ensuring high system efficiency even during light loads and idling. Unlike traditional ultrafast diodes, the new diodes have virtually no recovery tail, further enhancing overall efficiency.

These cutting-edge diodes find applications in a wide range of scenarios, including AC/DC PFC and DC/DC ultra high frequency output rectification in FBPS and LLC converters for solar power inverters, energy storage systems, industrial drives and tools, and datacenters. To withstand the harsh environments of these applications, the devices are designed to operate at temperatures up to +175 °C and offer forward surge ratings up to 260 A for exceptional robustness.

For added reliability, the RoHS-compliant and halogen-free diodes have undergone rigorous testing, including higher temperature reverse bias (HTRB) testing of 2000 hours and temperature cycling testing of 2000 thermal cycles. With these features and capabilities, Vishay Semiconductors continues to lead the way in providing high-quality, efficient solutions for modern power designs.