New Family of 100V Trench Schottky Rectifier Diodes for Increased Efficiency and Power Density

STMicroelectronics has introduced the new 100V trench Schottky rectifier diodes that boost efficiency in power converters operated at high switching frequencies. There are 28 variants in the new family, with eight current ratings from 1A to 15A, and multiple surface-mount packages, in industrial and automotive grades. The industrial-grade parts target applications such as miniature switched-mode power supplies and auxiliary power supplies for telecom, server, and smart-metering equipment. In automotive, typical uses include space-constrained applications such as LED lighting, reverse-polarity protection, and low-voltage DC/DC converters.

These diodes significantly reduce the rectifier losses, with superior forward-voltage and reverse-recovery characteristics that enable increased power density with high efficiency. The forward voltage is 50-100mV better than in comparable planar diodes, depending on current and temperature conditions. Simply changing to these devices can increase the efficiency by 0.5%. When combined with ST’s flyback and buck-boost converters, such as the VIPer controllers and HVLED001A offline LED driver, the 100V trench Schottky rectifiers fulfill the active-components bill of materials for switched-mode power supplies. All are supported in ST’s eDesign Suite Rectifier Diodes Simulator, which helps to select the rating and footprint, simulate waveforms, and estimate power efficiency.

Features

• High junction temperature capability

• Low forward voltage drop

• Low recovery charges

• Reduces conduction, reverse and switching losses

• Avalanche tested

• Flat packages

Applications

• LED lighting

• Reverse battery protection

• Low voltage DC-DC converters

• Auxiliary power supply

• Switched-mode power supply (SMPS)

Availability & Pricing

All devices are in production now. Pricing starts at $0.107 for the 1A STPST1H100ZF in SMD123 Flat.