Fast rectifiers reduce conduction and switching losses

Six Fred Pt Gen 5 1200V hyperfast and ultrafast rectifiers released by Vishay Intertechnology are claimed to offer the best conduction and switching loss trade-off for devices in their class. The 30 and 60A rectifiers are designed to increase the efficiency of high frequency converters and of hard- and soft-switched or resonant designs.

The rectifier are matched to operate with MOSFETs or high speed IGBTs, and are optimised for PFC and output rectification stages for electric vehicle (EV) and hybrid EV (HEV) battery charging stations, booster stages for solar inverters, and UPS and welding applications.

The rectifiers offer up to 10 per cent lower losses than competing silicon devices, claims Vishay, cutting the efficiency gap with SiC diodes in half and providing a cost-effective alternative for applications with frequencies in the 50kHz range.

Both 30 and 60A rectifiers are available in the TO-247L package and in X-type hyperfast and H-type ultrafast speed classes. The 30A devices are also offered in the TO-220AC. The X-type rectifiers offer the advantage of lower QRR, while H-type devices feature lower forward voltage, reports Vishay. Both offer the same forward voltage as competing solutions while delivering up to 40 per cent lower switching losses and QRR, respectively. The components offer high temperature operation to +175 degrees C.

Device Specification Table:

Samples and production quantities of the Fred Pt rectifiers are available now, with lead times of 18 weeks for larger orders.

Vishay Intertechnology is one of the world’s largest manufacturers of discrete semiconductors (diodes, MOSFETs, and infrared optoelectronics) and passive electronic components (resistors, inductors, and capacitors). These components are used in virtually all types of electronic devices and equipment, in the industrial, computing, automotive, consumer, telecommunications, military, aerospace, power supplies, and medical markets.

http://www.vishay.com