New power semiconductors for UPS / SMPS and DC-DC converters

Littelfuse has added two new ranges to its expanding power semiconductor portfolio: the MBR Series Schottky barrier rectifiers (standard Schottky) are the latest devices based on silicon Schottky diode technology; the DUR Series ultra-fast rectifier provides ultrafast switching speed. Both series are designed to meet the general requirements of commercial and industrial applications. The Schottky Barrier Rectifiers are popular with designers because of their extremely fast switching speed, very low forward voltage drop, low leakage and high junction temperature capability; similarly, the DUR Series Ultrafast Rectifier is popular with designers because of their ultrafast switching speed with very low reverse recovery time (TRR), high blocking voltage (up to 1200V) and low leakage, and low forward voltage drop, which makes it possible to minimize power loss and increase efficiency during converter operation. Their higher junction temperature capability and low leakage provide higher reliability in harsh, high temperature environments. Typical applications for MBR Series Schottky Barrier Rectifiers include uninterruptible power supplies, high frequency switch-mode power supplies and DC-DC converters, as well as use as free-wheeling diodes and polarity protection diodes. The DUR Series Ultrafast Rectifier addresses those applications, and can also be used as anti-parallel diodes for high frequency switching devices such as IGBTs. Other applications include inductive heating/melting and ultrasonic cleaners and welders. “The MBR Series and DUR Series represent important new additions to the growing Littelfuse power semiconductor portfolio,” said Corey Deyalsingh, director of power control semiconductors, Littelfuse. “I’m confident they will help us add depth to our power semiconductor product offerings and expand our applications coverage.”