The Phase-14 reliability report presents the results of testing eGaN devices to the point of failure, providing the information to identify intrinsic failure mechanisms of the devices.
Efficient Power Conversion (EPC) has published a report on gallium nitride (GaN) reliability and the use of physics-based models to project eGaN device lifetime.
EPC’s Phase-14 Reliability Report documents the strategy used to achieve a remarkable field reliability record. The rapid adoption of GaN devices in diverse applications calls for the continued accumulation of reliability statistics and research into the fundamental physics of failure in GaN devices. The Phase-14 Reliability Report presents the strategy used to measure and predict lifetime based upon tests that force devices to fail under various conditions. This information can be used to create more robust and higher performance products for applications such as lidar for autonomous cars, robotics, security, drones, high power density computing, and satellites, to name just a few.
This report presents the results of testing eGaN devices to the point of failure, which provides the information to identify intrinsic failure mechanisms of the devices. By identifying these intrinsic failure mechanisms, deep knowledge of the behavior of a device over time, temperature, electrical or mechanical stress can be developed and used to create physics-based models that accurately project the safe operating life of a product over a more broad set of operating conditions.
This report is divided into eight sections, each dealing with a different failure mechanism:
Section 1: Intrinsic failure mechanisms impacting the gate electrode of eGaN devices
Section 2: Intrinsic mechanisms underlying dynamic RDS(on)
Section 3: Applying the physics-based model to common real-world use cases
Section 4: Safe operating area (SOA)
Section 5: Testing devices to destruction under short-circuit conditions
Section 6: Custom test to assess reliability over long-term lidar pulse stress conditions
Section 7: Mechanical force stress testing
Section 8: Thermo-mechanical stress
“The release of EPC’s Phase-14 reliability report represents the cumulative experience of millions of devices and five generations of technology to lead to a deeper understanding of the behavior of GaN devices over a wide range of stress conditions,” said Dr. Alex Lidow, CEO and co-founder of EPC.