Delta Electronics Uses Transphorm’s GaN FETs

Transphorm Inc.and Delta Electronics reported that the power supply unit (PSU) of Delta Electronics’ newest innovation comes from the use of Transphorm’s high-voltage (HV) GaN FETs. Delta’s latest 80Plus Platinum 800 Watt power supply unit now also offers a backup lithium-ion battery. So, in the case of a power outage at a data center, the PSU’s battery will keep connected servers running for one minute, long enough for a proper power down sequence.

Delta says that the use of gallium nitride (GaN) field effect transistors (FETs) from Transphorm enabled it to reduce the power system size by 25 percent, allowing for battery inclusion within the PSU form factor. The company chose to use HV GaN devices to meet new product reliability and power density objectives. Additionally, Delta chose the HV GaN FETs to sought to repurpose its existing PSU design, a standard PFC continuous-conduction mode (CCM) boost converter.

Transphorm offers information on recommended design methods along with evaluation kits for AC to DC and DC to DC applications at various power ratings, on the company’s Design Resources page at