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Super barrier rectifier reduces charger size

Posted: 14 May 2013     Print Version  Bookmark and Share

Keywords:Diodes  super barrier rectifier  SBR  SBR15U50SP5  smartphone 

Diodes Inc. has unveiled the 15A-rated SBR15U50SP5 super barrier rectifier (SBR) to meet the needs of next-generation smartphone and tablet chargers. According to the company, the device is characterised by low forward voltage and low reverse leakage. The miniature SBR has been designed to tolerate the higher current pulses and operating temperatures of low-profile, discontinuous mode flyback charger designs, added the firm.

Presenting a forward voltage of just 0.35V for a current of 10A at an ambient temperature of 90ºC, the SBR15U50SP5 ensures conduction losses are minimized, thereby increasing charger efficiency. Its low reverse leakage at higher temperatures means that blocking mode losses are also reduced, removing the risk of thermal runaway and raising reliability, Diodes noted.

The SBR’s electrical performance, combined with the low thermal resistance of the compact PowerDI-5 package, means that heat transfer is optimized, enabling much smaller, thinner charger designs to be achieved. Diodes’ proprietary PowerDI-5 package occupies a maximum footprint of only 4.05 x 6.60mm and has an off-board profile of just 1.15mm.

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