What Is A Super Junction MOS? What‘s The Use!

时间： 2024-05-19 来源：LXMICRO Official Website

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Super junction MOS,COOlMOS,MOS transistor,Super junction MOSFETs

Super junction MOS, also known as COOlMOS, is a MOS transistor designed using a novel super junction structure on the basis of ordinary MOS. Super junction MOSFETs are mainly used in high voltage situations such as 500V, 600V, 650V, and above.

What are the advantages of super junction MOSFETs?

Compared with traditional VDMOS, super junction MOSFETs have the characteristics of low conduction resistance, fast switching speed, small chip size, and low heat generation. Generally speaking, the resistance of a super junction MOSFET with the same current and voltage specifications is only about half of that of a traditional VDMOS, and the device's on and off speeds are reduced by more than 30% compared to traditional VDMOS. These characteristics can enable super junction MOSFETs to have better temperature rise and efficiency performance when replacing traditional VDMOS. Generally speaking, after using super junction MOSFETs, the power efficiency can increase by 1-2 percentage points. At the same time, super junction MOSFETs can also be integrated and packaged with driver ICs, significantly reducing product volume.

Super junctions have smaller junction capacitance, and for super junction devices, a decrease in resistance can bring significant benefits, such as lower conduction loss or smaller chip size at the same RDS (on). In addition, a decrease in chip area will result in lower junction capacitance, gate, and output charges, which can reduce dynamic losses. In low-voltage trench or planar MOSFETs, it is usually necessary to consider using higher junction capacitance as a concession condition to reduce RDS (on). In the case of super junction technology, the degree of concession is minimal. The charge balance mechanism can simultaneously reduce RDS (on) and device junction capacitance, making it a win-win solution.

Guangdong Lingxun Microelectronics Co., Ltd. is a high-tech company that focuses on the research and development, production, sales, and integration of power semiconductor devices. The company can continuously innovate and design product applications and provide customers with high-quality and reliable power device products and comprehensive technical support.

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