Gallium Nitride Transistor Solutions

The all-in-one workstation is getting sleeker and lighter with every new model. One of the key enablers to this trend are lighter and small form-factor power converters, typically achieved by switching the power converter at a high frequency. High frequency switching leads to smaller and lighter passive components such as transformers, inductors and capacitors. A key impediment for high switching frequency operation is the switching & driving losses of the traditional silicon MOSFETs. GaN HEMTs (Gallium Nitride-High Electron Mobility Transistor) offer low gate charge and on-resistance compared to the traditional MOSFETs enabling high frequency power conversion.

The video below presents ON Semiconductor GaN Transistor solutions with the (882-9834) NTP8G202N and (882-9843) NTP8G206N devices.

A 240 W reference design is available, providing a complete solution for a 12 V / 20 A all-in-one computer power supply using GaN HEMTs as the switching devices.  

Devices also utilized in the design include:

• NCP1654 PFC Controller (786-6526) , (121-6379) , (162-9513) and (786-6529)
• NCP1397 High Performance Resonant Mode Controller (786-6494) , (162-9506) , (121-9843) , (786-6504) and (161-0883)
• NCP4304 Synchronous Rectification Controller (776-0743) , (162-1002) , (162-0106) , (821-5275) , (821-5272) and (121-7957)