800V MOSFET fits low-power SMPS applications

Article By : Infineon Technologies

The 800V CoolMOS P7 series offers up to 0.6% efficiency gain, which translates into 2°C to 8°C lower MOSFET temperature.

Based on the superjunction technology, Infineon Technologies' 800V MOSFET focuses on flyback topologies which are typically found in applications like adapter, LED lighting, audio, industrial and auxiliary power.

A perfect fit for low-power SMPS applications, the 800V CoolMOS P7 series offers up to 0.6% efficiency gain. This translates into 2°C to 8°C lower MOSFET temperature compared to the CoolMOS C3 or to competitor parts tested in typical flyback applications. This new benchmark results from a combination of optimised device parameters: including the reduction of more than 50% in Eoss and Qg, as well as a reduced Ciss and Coss. The further improved performance enables higher power density designs through lower switching losses and better DPAK R DS(on) products. Overall, this helps customers to save BOM costs and reduce assembly efforts.

Ease-of-use of is an intrinsic feature designed into this product family. The integrated Zener Diode significantly improves ESD ruggedness, thus reducing ESD related production yield losses. The MOSFET is easy to drive and to design-in due to its V(GS)th of 3V and the smallest V GS(th) variation of only ±0.5V. This combination allows for lower driving voltage and lower switching losses. Additionally, it helps to avoid unintentional operation in the linear region.

The family of 800 V CoolMOS P7 MOSFETs will be available in twelve R DS(on) classes and in six packages to fully address the needs of target applications. Products with R DS(on) of 280mΩ, 450mΩ, 1400mΩ and 4500mΩ can be ordered now.

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