Development and testing of semiconductor power devices

In recent years, the manufacturing links of global semiconductor power devices have shifted to my country at a relatively rapid rate. At present, my country has become the world's most important semiconductor power device packaging and testing base. Such as IDM (Jilin China Microelectronics, China Resources Microelectronics, Hangzhou Silan Microelectronics, BYD, Zhuzhou CRRC Times Semiconductor, Yangzhou Yang Jie, etc.); modules (Jiaxing Star, Nanjing Yinmao, CRRC Yongdian, etc.) Xi’an Weiguang, Hubei Taiji, Ningbo Daxin, etc.); Design (Qingdao Jiaen, Wuxi Ziguang, Shanghai Luxin, Zhejiang Tianyi, Shenzhen Xinneng, Chengdu Senwei, etc.); OEM (Shanghai Huahong, Wuhu TusHoldings, Shenzhen Founder Microelectronics, SMIC, etc.); Test category (Taiwan Guankui, Shaoxing Hongbang, Xi'an Yien, Hangzhou Reliability Instrument Factory, Shaanxi Sanhai, Xi'an Qingyun, etc.);
with domestic semiconductor power devices With the emergence of the trend of globalization and the rising demand in downstream application fields, China’s semiconductor power device industry contains huge development opportunities, especially in new energy (automotive, photovoltaic, industrial control), new materials, biology, high-end equipment manufacturing, smart grid, The development of industries such as rail transit, wind power generation, and a new generation of information technology are all inseparable from the support of semiconductor power devices. Semiconductor power devices with thyristors, MOS, IGBT, and third-generation semiconductor devices as the core are developing rapidly.
While the semiconductor power device industry is advancing by leaps and bounds, the corresponding testing industry has also developed rapidly. From the design, research and development, production, later use, and product maintenance of semiconductor power devices, corresponding electrical parameter tests are required. I can't help but wonder, why do semiconductor devices need to be tested? Which parameters should be tested specifically? After consulting relevant information, the editor got the following information and shared it with everyone.
1. What kind of testing is required for the device?
Static parameter test: The most basic test item, which can simply evaluate the performance of the device. Various static parameters provide users with a very intuitive reference basis for reliable selection of devices. At the same time, it plays a vital role in the detection of power devices in inverters, welding machines, and rail transit.
Recommended corresponding equipment: EN-2005 series, EN-3020
Dynamic parameter test: The excellent dynamic parameter determines the switching performance of the device. Usually we hope that the switching speed of the power semiconductor device is as high as possible, the switching process section, and the loss is small. However, in practical applications, there are many parameters that affect the switching characteristics, such as the reverse recovery parameters of freewheeling diodes, the existence of gate/drain, gate/source and drain/source capacitance, and gate charge. It is very important to test such parameters. The switching characteristics determine the switching loss, power density, device stress and electromagnetic compatibility of the device. Directly affect the performance of the converter. Therefore, it is extremely important to accurately measure the switching performance of power semiconductor devices.
Recommended corresponding equipment: EN-6500A, EN-1230A Limit
capacity test: such as surge current test, avalanche energy test.
Inrush current refers to the peak current or overload current that is much larger than the steady-state current generated at the moment the power is turned on or when the circuit is abnormal.
Avalanche tolerance means that when a large reverse attenuation bias is applied to the junction of the semiconductor, the flow of electric field attenuation current will cause avalanche attenuation. At this time, the energy absorbed by the device is called avalanche tolerance.
Recommended corresponding equipment: ENL3010, ENX2020A Aging
reliability life test: In order to ensure the durability of the product, that is, the life of the product. Semiconductor power device manufacturers will do a series of reliability tests before the product is finalized to ensure the long-term durability of the product. Such as HTRB-high temperature and high pressure reverse bias test, HTGB-high temperature grid bias test, H3TRB-high temperature and high humidity reverse bias test, HV-H3TRB high pressure, high temperature and high humidity reverse bias test, PC-power cycle test, etc.
Recommended corresponding equipment: ENX2020C, ENX2020D, ENX2020E, ENG1220
2. Why do I need to test the new device I just bought before it has been used?
Semiconductor devices may generate large electrostatic voltage due to friction during the manufacturing, storage, transportation and assembly processes. When the device is in contact with these charged objects, the charged objects will discharge through the pins of the device, causing the device to fail .
Damage problems during transportation and operation: the transportation, loading, unloading, handling, and assembly of devices are likely to cause mechanical damage to semiconductor devices and integrated circuits.
Storage and custody problems: improper storage and custody is also an important reason for the reduction of reliability of components (such as: the temperature and humidity of the storage warehouse are out of range).
Inferior product doping: bad suppliers will be in consideration of economic benefits, doping unqualified products, which are shoddy (refurbished devices and second-hand devices flooding the market)
Inspection of returned repair parts: semiconductor devices as the core product Secondary screening, inspection, and maintenance when returning to the factory.
I will share it briefly today. The above content is only my personal opinion. If there is any mistake, please guide.
For semiconductor device testing equipment or testing service requirements, please contact Xi'an Yien Electric: 15249202572. We will provide you with comprehensive services!