SiC MOSFETs demonstrate switching and reliability improvements
Silicon carbide (SiC) MOSFETs from ON Semiconductor are claimed to have improve power density with switching and reliability performances.
For demanding applications where power density, efficiency and reliability are key considerations, ON Semiconductor says existing silicon switching devices can be replaced with the 650V SiC MOSFETs in electric vehicles (EVs), on-board chargers (OBCs), solar inverters, server power supplies, telecomms and uninterruptible power supplies (UPS).
Qualified for automotive, to AECQ101, and industrial grades, the 650V NVBG015N065SC1, NTBG015N065SC1, NVH4L015N065SC1 and NTH4L015N065SC1 MOSFETs are based upon a new wide bandgap material that provides superior switching performance and improved thermals when compared to silicon, claims ON Semiconductor. This results in improved efficiency at the system level, enhanced power density, reduced EMI and reduced system size and weight.
The new generation of SiC MOSFETs employ a novel active cell design combined with advanced thin wafer technology enabling best in class figure of merit Rsp (Rds (on) area) for 650V breakdown voltage. The NVBG015N065SC1, NTBG015N065SC1, NVH4L015N065SC1 and NTH4L015N065SC1 are claimed to have the lowest Rds (on) (12 mOhm) in the market in D2PAK7L and To247 packages. This technology is also optimised around energy loss figure of merits, optimising performance in automotive and industrial applications. An internal gate resistor (Rg) allows more flexibility in eliminating the need to slow down devices artificially with external gate resistors. Higher surge, avalanche capability and short circuit robustness all contribute to enhanced ruggedness that delivers higher reliability and longer device lifetimes.
The MOSFETs are all surface mount and available in industry standard package types including TO247 and D2PAK.
ON Semiconductor supplies semiconductor-based solutions, offering a comprehensive portfolio of energy efficient, power management, analogue, sensors, logic, timing, connectivity, discrete, SoC and custom devices. The company’s products help engineers solve design challenges in automotive, communications, computing, consumer, industrial, medical, aerospace and defence applications.
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