Transporm and TDK Lambda expand AC-DC GaN power module series

     TDK Lambda, a leading power supply manufacturer and a group company under TDK, has expanded its GaN based PFH500F product line. PFH500F-12 and PFH500F-48 are the second and third modules in TDK's 500 watt AC to DC (AC-DC) power supply series, providing 12V and 48V output voltages respectively. Like the previous generation of 28V PFH500F-28 based on GaN, these two latest power products bring GaN advantages to terminal applications, including a 13% reduction in device package size and a 6% increase in efficiency. Compared with the existing 12V and 48V silicon based modules PFE500SA-12 and PFE500SA-48 of TDK Lambda, the superposition of these advantages increases the power density by 38%.

     The PFH500F series uses Transpharm's 72m Ω, 8x8 power square flat pin less package gallium nitride field effect transistor (PQFN GaN FET) (TP65H070LDG). The high power density of these power transistors enables TDK to cool GaN power supplies through thin substrates. This advantage also enables TDK to produce more compact and compact power modules, which can support a wide range of industrial applications operating in harsh environments. Such applications include COTS power supply, customized fanless power supply, 5G communication, laser, digital signage/display, signaling, etc.

     The 12V and 48V PFH500F modules were designed by the TDK Lambda Americas team in Dallas, Texas, and both deployed a totem pole bridgeless power factor correction (PFC) configuration. The design of the flagship 28V GaN power supply took about three years. Later, TDK's engineering team modified the original model and introduced the two latest models within one year.

     Jin He, vice president of engineering of TDK Lambda Americas, said: "After carefully considering the wishes and needs of customers, TDK decided to launch the GaN based PFH500F product line. In addition, what our customers need is a reliable power supply system that can be used for stable applications with high failure costs. Relying on Transpharm's GaN products, we are confident that we will be able to provide power supply units (PSUs) with smaller and smaller size and higher performance requirements To achieve this goal and stimulate innovation in terminal systems. "