Comparing Trench and Planar Schottky Rectifiers
White Paper Overview
Discrete power diodes and rectifiers used in an asynchronous switch mode power supply (SMPS) play a decisive role in the efficiency, reliability and electromagnetic emission of the complete system. A new generation of Trench Schottky rectifiers combines low switching losses and leading thermal performance.
The new parts up to 100 V and 20 A recently released by Nexperia offer low forward voltage and very low Qrr to enable better efficiency at high switching speeds. Additionally, they provide a wide safe operating area (SOA), delivering an extra safety margin and reducing the risk of thermal runaway.
This white paper provides an in-depth look at:
- The differences between planar and Trench Schottky technology
- How the SOA advantage of Nexperia's Trench Schottky rectifiers prove useful in applications where higher ambient temperatures have to be tolerated
- The impact of the lower Qrr of Trench Schottky on the efficiency of a 48V/12V switch-mode converter
- Why maximum efficiency of switch-mode power converters starts with choosing the right diode technology