Dell has adopted gallium nitride (GaN) for the first time, and selected Navitas GaNFast technology to replace old, slow silicon chips. The PA901 is a dual-output fast charger with 90W available via USB-C for high-power laptop charging, plus an extra 10W via USB-A to simultaneously charge a smartphone. The adapter unleashes Dell ExpressCharge™ for a quick boost of up to 35% in just 15 minutes and will charge the Dell Latitude up to 80% in under an hour.
Two NV6117 GaNFast power ICs are used in the Dell adapter; one for the critical conduction mode (CrCM) boost power factor correction circuit (PFC), and one for the DC-DC quasi-resonant (QR) flyback. A combination ‘PFC+QRF’ control IC (NCP1937) is used from On Semiconductor. The adapter was designed and built by Chicony Power Technology, headquartered in Taipei with support from local Navitas application engineering.
See the press release here: Dell Adopts Navitas GaNFast Technology for Laptop Fast Charger – Navitas (navitassemi.com)