Power

Rectifiers can cut efficiency gap with SiC diodes

17th November 2020
Mick Elliott

New Yorker Electronics has announced availability of 12 new FRED Pt Gen 5 1200 V Hyperfast and Ultrafast rectifiers from Vishay Semiconductor.

The ideal choice for soft switched and resonant high frequency converters, it features a unique combination of low conduction and switching losses.

Specifically designed to improve efficiency of PFC and output rectification stages of EV / HEV battery charge stations, booster stage of solar inverters and UPS applications, these devices are perfectly matched to operate with MOSFETs or high speed IGBTs.

The 12 new Vishay FRED Pt Gen 5 1200 V Hyperfast and Ultrafast rectifiers offer the best conduction and switching loss trade-off for devices in their class.

Ranging from 8 A up to 60 A, in single and dual-diode configurations, the Vishay rectifiers are designed to increase the efficiency of high frequency converters and hard- and soft-switched or resonant designs.

Matched to operate with MOSFETs or high speed IGBTs, they supply up to 10 % lower losses than competing silicon solutions.

They are capable of cutting the efficiency gap with SiC diodes in half and provide a cost-effective alternative for applications with frequencies in the range of 50 kHz.

Vishay FRED Pt Gen 5 offers the same forward voltage as competing solutions, while delivering up to 40-perent lower switching losses and QRR.

The case moulding compound meets UL 94 V-0 flammability rating and its terminals are matte tin plated leads, solderable per J-STD-002 and JESD 22-B102.

The parts are offered in 2L TO-220AC / TO-247AD 2L (single diode) and 3L TO-220AB / TO-247AD 3L (dual diode).

They are available in X-type hyperfast and H-type ultrafast speed classes. X-type rectifiers offer the advantage of lower Qrr. H-type devices feature lower forward voltage

The will operate at temperatures up to +175 °C

Applications include three-phase T-type PFC and output rectification stages for EV / HEV battery charging stations; booster stages for solar inverters; UPS; and welding applications

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