Fujitsu starts sample shipments of GaN power device

Fujitsu Semiconductor has release the MB51T008A, a silicon substrate-based, gallium-nitride (GaN) power device that features a breakdown voltage of 150 V. Sample quantities of the new product will be made available this month. The new device, which enables normally-off operations, is capable of achieving roughly one half the figure of merit (FOM) of silicon-based power devices with an equivalent breakdown voltage.

With the addition of the new product to its lineup, Fujitsu Semiconductor will be able to offer GaN devices that contribute to smaller, more efficient power supplies for a wide range of fields, from home appliances and ICT equipment to automotive applications.

The MB51T008A has a number of advantages, including: on-state resistance of 13 milliohm and total gate charge of 16 nC, which enables roughly half the FOM of silicon-based power devices with an equivalent breakdown voltage; minimal parasitic inductance and high-frequency operations through the use of WLCSP packaging; and a proprietary gate design that enables normally-off operations. The new device is ideal for high-side switches and low-side switches in DC-DC converters employed in power supplies for data communications equipment, industrial products, and automobiles.

In addition, because it supports a higher switching frequency in power supply circuits, power supplies can achieve improvements in overall size and efficiency.

Volume production is scheduled to begin in 2014.

In addition to MB51T008A, which features a breakdown voltage of 150 V, Fujitsu Semiconductor is also developing models with breakdown voltages of 600 V and 30 V, thereby helping to enable enhanced power efficiency in a wide range of product areas.


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