The choice of a TOLL reduces the size compared to a QFN, explained Stephen Oliver, Navitas Semiconductor’s vp of corporate marketing and investor relations. “It runs cooler than a QFN and has fused pins for thermal capability, with keys on the pins for mechanical robustness and thermally advanced packaging,” he explained.
The power ICs integrate GaN power and drive, with control, sensing and protection. They are also believed to be the first in the industry to be covered by a 20-year warranty.
The initial 650/800V exceeds conventional continuous voltage protection, added Oliver. The initial GaNSafe offering covers 35mΩ-98mΩ and addresses 1,000W-22,000W.
For operation at high temperatures and long duration conditions, such as solar inverters, which are on rooftops for 20 years or more, the ICs integrate regulated gate drive control with zero gate source loop inductance for high speed (2MHz) switching to maximise application power density. There is also high speed short circuit protection, with autonomous ‘detect and protect’ within 50ns, whic is four to five times faster than using separate discrete devices, said Oliver.
There is also electrostatic discharge (ESD) protection of 2kV, compared to zero for discrete GaN transistors, and an increased voltage capability of 650V continuous, and 800V transient to protect during extraordinary application conditions.
The TOLL package has just four pins and programmable turn-on and turn-off speeds (dV/dt) to simplify EMI regulatory requirements.
The four-pin package is surface mount includes two programmable resistor pins to regulate turn-on and turn-off speeds to simplify EMI protection. The package is certified to PC-9701 mechanical reliability standard. AEC testing is currently underway with results expected mid-2024.
GaNSafe is available immediately to qualified customers. Mass production is expected to begin early Q4 2023.
Reference designs, with EMI testing, thermal and efficiency for data centres are also available.
Following sampling to selected customers, Navitas has announced that Chinese car manufacturer, Geely, which has a controlling stake in Lotus and a minority stake in Daimler, will produce vehicles using GaNSafe from 2025.
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