The world is now facing an energy crisis, and paying high attention to the solution of optimizing the energy efficiency. As a consequence, the development of WBG (Wide-Band-Gate)becomes one of major subject, including enhancing the generation efficiency from solar and wind power, speeding up charging time of EV(Electric VehicleValidation), and making high power efficiency in high performance computing. Meanwhile, to effectively secure the quality of products, high-level reliability validation and tests are necessary. DEKRA iST was invited to share “Reliability Solution & Challenge for WBG Component in EV ” in “WBG Components Technology and Future Application Seminar” which was held on March 10th in NTUH International Convention Center by Industrial Development Bureau and EETimes.

Max Chen, Manager of DEKRA iST Component Engineering Department, started his speech from analyzing the application and trends of WBG semiconductor in EV industry. The market growth of next-generation power semiconductor includes Silicon Carbide (SiC)and Gallium Nitride(GaN)is expected to reach nearly 20% annually. For SiC, there’re several advantages including low resistance, high-speed operation and high-temperature operation, etc. Therefore, the power components made of this material also contain great benefit of operating temperature, voltage, frequency, power range and energy consumption.

Along with the flourish development of EV industry, the update of automotive standards becomes faster than before. Thus, when product or device  comes to design verification stage, the methods of reliability validation should be followed up base on choosing the appropriate international standard for each product. For automotive components, the most common standards are AEC-Q101 and AQG 324. AEC-Q101 is defined by Automotive Electronics Council (AEC) for stress test standards and test methods for discrete semiconductor components; AQG 324 is developed by German automotive OEMs, European Center for Power Electronics(EPEA)work group and ZVEI for the qualification of power electronic converter unit(PCU) power modules in vehicles.

IOL(Intermittent Operating Life)test

SOA(Safe Operating Area)test

As an experienced expert in reliability field, Max shared the features and methods of 3 key reliability tests based on the 2 standards above, which are RTH(Thermal resistance)test、IOL(Intermittent Operating Life)test and SOA(Safe Operating Area)test. Moreover, DEKRA iST provides one-stop service for validation, including special high-voltage board design, power component parameter measurement, HTRB, HTGB, H3TRB, TST and other automotive reliability tests.

To complete our PROBLEM SOLVED mission for validation, DEKRA iST team also provides professional consultation service. 
For any problem about validation, please feel free to email us.