Rectifier increases efficiency of LED drivers

A super barrier rectifier from Diodes Incorporated has been designed to increase the efficiency of offline LED drivers for applications such as LED light bulbs, ballasts, signage and street lighting.

The SBR1U400P1 rectifier has a forward voltage some 25 per cent lower than standard p-n diode alternatives.

This 1A, 400V rated part suits both bridge, with a 120VAC input, and buck stages of driver circuits.

The rectifier's typical ultra-low forward voltage of less than 0.65V for a current of 1A at 125C means a reduction in power consumption is now possible for a range of offline LED driver circuits.

It is provided in the company's own PowerDI123 package for heat dissipation.

The SBR1U400P1 also has a high-speed switching performance with a maximum reverse recovery time of just 85ns (If=0.5A, Ir=0.5A, Irr=0.25A).

The rectifier exhibits a soft recovery and removes ringing, resulting in an overall reduction in electrical noise generation.

The SBR1U400P1 super barrier rectifier from Diodes Incorporated is priced at USD0.08 (GBP0.05) each in 10,000-piece quantities.

A 200V version, the SBR1U200P1, will also be released, priced at USD0.075 each in 10,000-piece quantities.

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