News Article

Transphorm Releases Second Totem Pole Eval Board


2.5 kW board features Microchip’s DSP tech and new SuperGaN Gen IV D2PAK FET in swappable daughter card for quick access to different power levels

GaN power company Transphorm has announced the expansion of its design tools using digital signal processing technology from Microchip Technology.

The TDTTP2500B066B-KIT is a 2.5 kW AC-to-DC bridgeless totem pole power factor correction (PFC) evaluation board. It pairs Transphorm's SuperGaN FETs with Microchip's dsPIC33CK digital signal controller (DSC) board, which includes pre-programmed firmware that can be easily customised per end application requirements. Use of the new board enables faster development of data centre and broad Industrial power supplies.

The TDTTP2500B066B-KIT is available off-the-shelf with a daughter card using Transphorm's latest SuperGaN Gen IV device, the TP65H050G4BS—a 650 V SMD SuperGaN FET in a TO-263 (D2PAK) offering a typical on-resistance of 50 milliohms.

The new board also introduces an advanced feature to increase its usability: swappable daughter cards housing Transphorm's GaN devices. As a result, design engineers can also evaluate the TP65H070LDG/LSG GaN devices with a 72 milliohm on-resistance through the use of a second optional daughter card—the TDHB-65H070L-DC—sold separately. This daughter card is a drop-in replacement for the 50 milliohm FET card.

As with the first SuperGaN/Microchip DSC evaluation board (the 4 kW TDTTP4000W066C-KIT), the 2.5 kW board is backed by access to Microchip's worldwide technical support team for firmware development assistance.

“Our continued collaboration with Transphorm delivers innovative power electronics solutions for the growing GaN power conversion market,” said Joe Thomsen, vice president of Microchip's MCU16 business unit. “Microchip is heavily invested in leading technological change through smart integrated solutions. The performance and flexibility of our digital signal processors are a perfect fit for the demanding requirements of GaN-based power conversion applications.”

Microchip's dsPIC DSCs are supported by a set of embedded design tools created to empower developers, even those with limited expertise. These tools provide intuitive graphic user interfaces for device initialisation in Microchip's free MPLAB® X Integrated Development Environment. The software tools are complemented by a full line of programmer, debugger and emulator accessories.

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