600V GaN FET supports applications up to 10kW

Claimed to double power density in industrial and telecomms applications, the LMG341x family of high-voltage GaN FETs has been announced by Texas Instruments.

The 600V GaN FETs of 50 and 70-mOhm power stages support applications from sub 100W to 10kW. The FETs enable designers to create smaller, more efficient and higher-performing designs compared to silicon FETs in AC/DC power supplies, robotics, renewable energy, grid infrastructure, telecomms and personal electronics applications.

The LMG341x family devices provide an alternative to traditional cascade and standalone GaN FETs by integrating functional and protection features to simplify design, says TI. This enable greater system reliability and optimisation of the performance of high-voltage power supplies. With integrated current limiting of up to 100 nanoseconds and over-temperature detection, the devices protect against unintended shoot-through events and prevent thermal runaway. System interface signals enable a self-monitoring capability.

TI’s integrated GaN power stage doubles power density and reduces losses by 80 per cent compared to silicon MOSFETs, explains TI. Each device is capable of fast, 1MHz switching frequencies and slew rates of up to 100V/nanoseconds.

The family of GaN FETs is backed by 20 million hours of device reliability testing, including accelerated and in-application hard switch testing.

The LMG3410R050, LMG3410R070 and LMG3411R070are available now in 8.0 x 8.0mm split-pad, quad flat no-lead (QFN) packaging.

Visitors to the Texas Instruments stand C4-131 at electronica (13 – 16 November at Messe Munchen, Germany) will see a 10kW cloud-enabled grid link demonstration, jointly developed by TI and Siemens. The demonstration uses TI’s LMG3410R050 600V GaN FET with integrated driver and protection, enabling engineers to achieve 99 per cent efficiency and up to 30 per cent reduction in power component size compared to a traditional silicon design.

Texas Instruments is a semiconductor design and manufacturing company that develops analogue integrated circuits (ICs) and embedded processors.


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