Low voltage HEMT family in easy-to-use flip chip QFN packaging

Innoscience Technology has revealed a new range of low-voltage discrete HEMTs in FCQFN packaging. Rated at 40V, 100V and 150V, the 'flip chip' formatting makes it straightforward for engineers to use.

Dr Denis Marcon, general manager, Innoscience Europe, comments: "We still also offer all our discrete devices in wafer scale packages, which are beneficial for some module users, however, the new FCQFN devices are easy to mount on PCBs using standard assembly equipment and processes."

40V-rated FCQFN devices are obtainable with an on-resistance value of 4.3mOhm (3mm x 4mm chip size). 100V HEMTs are offered with RDS(on) ratings of 2.8mOhm (3mm x 5mm) and 1.8mOhm (4mm x 6mm), while the 150V-rated parts measuring 4mm x 6mm are available with 3.9mOhm and 7mOhm RDS(on).

The 40V parts using the company's latest GaN processes achieve industry-leading performance with best-in-class FOM values for Qgg*Ron and Idss*Ron.

The parts low drain and gate leakage currents allow them to be utilised in mobile markets and direct-battery-connected applications. Other applications include USB Type C buck-boost converters in laptops. Also, with its latest generation process, the company maintains very tight control of the epitaxy, resulting in a uniform threshold voltage and on-resistance and a very high wafer yield.

Due to their low on-resistance, 100V devices suit DC-DC conversion at power levels of up to 2kW. Power levels up to 8kW can be achieved when used in parallel configuration.

The new 150V targets industrial applications, including solar installations. They have been developed to be very rugged, so they do not need the industry-standard 80% derating to be applied (i.e. they are rated at 100% of their voltage). All the new 40V, 100V, and 150V HEMTs have been tested to exceed JEDEC and the GaN-specific JEP 180 standards.

One last important point to highlight is that the 1.8mOhm 100V HEMTs are pin-for-pin compatible with the new 3.9mOhm and 7mOhm 150V parts as they are all packaged in FCQFN 4mm x 6mm: this allows great design flexibility.