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Transphorm, ON Semi debut GaN power devices

18 Mar 2015  | Primit Parikh

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Transphorm, in partnership with ON Semiconductor, unveils two 600V gallium nitride (GaN) cascode transistors and a 240W reference design at the Applied Power Electronics Conference (APEC) 2015.

This introduction comes after the announced partnership between Transphorm, Transphorm Japan and ON. The TPH3202PS (ON Semi equivalent: NTP8G202N) and TPH3206PS (ON Semi equivalent: NTP8G206N) are offered in a TO-220 package for easy circuit board integration, and on-resistances of 150mΩ and 290mΩ.

"At last year's APEC 2014, the Transphorm booth displayed evaluation boards using our 600V TO-220HEMTs. At this year's show we're excited to announce complete GaN-specific reference designs with ON Semiconductor," said Primit Parikh, president and co-founder of Transphorm. "With our partner, ON Semiconductor, we are providing complete reference design platforms and tools that enable designers to take advantage of GaN's benefits while greatly accelerating their design cycles and reduce time to market."

The two-stage evaluation board NCP1397GANGEVB (Transphorm equivalent: TDPS250E2D2) is offered as a complete reference design so that customers can implement GaN cascode transistors in their power designs. The evaluation board is representative of a production power supply that has been re-designed for smaller size and higher performance systems, and it highlights the capability and potential of GaN transistors in this power range.

The boost stage delivers 98 per cent efficiency and utilises the NCP1654 power factor correction controller. The LLC DC-DC stage uses the NCP1397 resonant mode controller to offer 97 per cent full load efficiency. This performance is achieved while running at 200+kHz and is also able to meet EN55022 Class B EMC performance.

The Transphorm GaN HEMT devices are in mass production at Fujitsu Semiconductor group's CMOS-compatible, 150mm wafer fab in Aizu-Wakamatsu, Fukushima, Japan. The large-scale, automotive-qualified facility, which provides exclusive GaN foundry services for Transphorm and its partners, will allow expansion of Transphorm's GaN power device business to meet a growing customer demand.

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