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TDK-Lambda Power Supply Uses Transphorm GaN FET

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New AC-DC modules for industrial applications deliver higher efficiency, higher performance, smaller size

High voltage GaN company Transphorm has confirmed that power supply manufacturer TDK-Lambda, a group company of TDK, has released its first GaN-based AC-DC power supply.

The 504 W rated PFH500F-28 is the company's latest generation AC-DC baseplate cooled power supply module. Further, the power module is the latest Transphorm customer product to demonstrate the HV GaN advantages, increasing efficiency by 5 percent in a 28 percent smaller package over the previous PFE500F series.

The PFH500F-28 is a low-profile power module with 28 volts of output power designed for various harsh environment applications, commercial off-the-shelf (COTS) power supplies, custom fanless power supplies, traffic signaling, and more. TDK-Lambda's redesigned standard power module uses a bridgeless totem-pole power factor correction topology to optimise Transphorm's TPH3206LDG FET in the popular 8×8 PQFN package.

The development project was led by the TDK-Lambda Americas Dallas, TX team and used Transphorm's application support team throughout various phases of the three-year initiative.

“We are excited to introduce the new standard PFH series,” explained Jin He, VP of engineering at TDK-Lambda. “Our engineers diligently review new technologies that will benefit our end customers to ensure any new product we release is reliable and a notable advancement over prior models. Our decision to work with Transphorm on our first GaN AC-DC product was based largely on the power semiconductors' proven quality and reliability as well as the team's reputation for successful collaboration. Our experience was such that we've released the PFH500F-28 with our three year warranty and are in discussions with Transphorm regarding future projects.”



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