650V GaN chip has 800V peak operation for 500W chargers

February 10, 2021 // By Nick Flaherty
650V GaN chip has 800V peak operation for 500W chargers
The NV6128 650V integrated GaN power chip from Navitas Semiconductor is aimed at compact 500W chargers

Navitas Semiconductor has launched a 650V integrated gallium nitride GaN power chip with peak 800V operation for 500W chargers.

The NV6128 GaNFast power IC is a monolithic integration of FET, drive and logic in a 6 x 8 mm PQFN package for high-power mobile and consumer power designs. The 70 mOhm NV6128 represents a 66 percent increase in current capability over the previous version with a proprietary, integrated cooling pad on the package for high-efficiency, high-density power systems.

“GaNFast power ICs have been broadly adopted by tier-1 names like Lenovo, Dell, OPPO and Xiaomi for fast-charging mobile adapters up to 200W, with over 13,000,000 shipped and zero failures,” said Gene Sheridan, CEO and co-founder of Navitas. “With the higher-power NV6128, we extended the effective power range to 500W for the consumer market and look beyond that to multi-kW data center, eMobility and new energy applications.”

The NV6128 is rated at 650V for nominal operation with a high, 800V peak capability for robust operation during transient events. The GaN gate is fully protected and the whole device rated at an industry-leading electrostatic discharge (ESD) specification of 2kV.

“Compared to current tier-1 OEM laptop adapters using silicon in traditional diode rectification and boost PFC topologies at 50-70kHz, the GaNFast NV6128 enables a modern high-speed totem-pole architecture and complete 300W solutions at over 1.1W/cc. That’s up to three times smaller and lighter with existing 200kHz control. When you crank up the speed to MHz+, you get another major step-increase in power density," said Dan Kinzer, Navitas CTO/COO and co-founder. “It’s a night and day comparison.”

The NV6128 is aimed at 200W to 500W power applications such as all-in-one PCs, TVs, game consoles, eMobility chargers for eScooters and eBikes as well as higher power gaming laptops.

Next: GaN pricing


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