A novel electrical measurement method of peak junction temperature based on the excessive thermotaxis effect of low current

2009 ◽  
Vol 30 (9) ◽  
pp. 094005
Author(s):  
Zhu Yangjun ◽  
Miao Qinghai ◽  
Zhang Xinghua ◽  
Han Zhengsheng
Keyword(s):  
Measurement Method ◽  
Electrical Measurement ◽  
Junction Temperature

Modeling of Stacking Fault Expansion Velocity of Body Diode in 4H-SiC MOSFET

2017 ◽  
Vol 897 ◽  
pp. 214-217 ◽  
Author(s):  
Kumiko Konishi ◽  
Ryusei Fujita ◽  
Akio Shima ◽  
Yasuhiro Shimamoto
Keyword(s):  
Electrical Measurement ◽  
Stacking Fault ◽  
Junction Temperature ◽  
Expansion Velocity ◽  
Forward Voltage ◽  
Forward Current ◽  
Before And After ◽  
Voltage Degradation ◽  
Good Agreement

We present a model to explain forward voltage degradation of body diode in 4H-SiC MOSFET, and evaluate the velocity of SF expansion. First, by using in-situ photoluminescence (PL) observation, we investigated how a stacking fault (SF) expands from a basal plane dislocations (BPD) in the 4H-SiC epitaxial layer. Second, double-diffused MOSFETs were developed and measured before and after degradation. Then, the characteristics of the forward voltage degradation were modeled by a combination of PL imaging and electrical measurement, and the calculated characteristics are in good agreement with the measured ones. Finally, we tested the SiC MOSFETs under various stress conditions and evaluated the velocity of the SF expansion by calculation. This results indicate that the velocity of SF expansion increased with increasing forward current density and junction temperature.

Review of Thyristor Junction Temperature Calculation Methods

2013 ◽  
Vol 798-799 ◽  
pp. 91-96
Author(s):  
Guang Yuan Yang ◽  
Xing Yuan Li ◽  
Yong Yin Hu ◽  
Kuan Li
Keyword(s):  
Measurement Method ◽  
Indirect Measurement ◽  
Junction Temperature ◽  
Thermal Impedance ◽  
Calculation Methods ◽  
Advantages And Disadvantages ◽  
Network Method ◽  
Numerical Calculation Method ◽  
Increasing Temperature ◽  
Made In

The thyristor has been widely used in many fields since it has been invented, and has promoted the development of the DC transmission technology rapidly. The increasing temperature of its junction may cause serious hazards. Because of this, a variety of methods that can obtain the junction temperature has been summarized in this paper, such as the indirect measurement method, the direct measurement method, the equivalent thermal impedance network method and the numerical calculation method, etc. Summaries have been made in different occasions which these methods were applied. It also compared the advantages and disadvantages of each method and pointed out the developing trends and researching directions in the future.

Research on the Test Technology of Fire Control System of Tank

2013 ◽  
Vol 694-697 ◽  
pp. 2040-2043
Author(s):  
Wei Yi Chen ◽  
Qi Xie ◽  
Yun Luo
Keyword(s):  
Control System ◽  
Measurement Method ◽  
Electrical Measurement ◽  
Measuring System ◽  
Test Scheme ◽  
Fire Control ◽  
Test Technology

Based on the test scheme and principle of armoured vehicle fire control system, proposes electrical measurement method unite gyros method to test armoured vehicle fire control system; Established the processing model of gun drifting, stability accuracy, gun transfer speed, intergrade quality; according to the gyros drifting problem, proposes drift trend arithmetic to enhancing the accuracy of measuring system.

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