Transphorm’s 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 customized per end application requirements. Use of the new board enables faster development of Data Center and Broad Industrial power supplies.
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.
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 initialization in Microchip’s free MPLAB® X Integrated Development Environment. The software tools are complemented by a full line of programmer, debugger and emulator accessories.
Technical Specifications
– 650 V 50 mΩ SuperGaN FET (TP65H050G4BS)
– Input voltage: 85 VAC to 265 VAC, 47Hz to 63Hz
– Input current: 18 Arms; 1250 W at 115VAC, 2500 kW at 230 VAC
– Output voltage: 390 VDC ± 5 VDC (programmable)
– Deadtime: programmable
– PWM frequency: 66kHz
– Power factor: > 0.99
The board is designed around Microchip’s dsPIC33CK digital power plug in module (PIM) to control the PFC powertrain, with the following pre-programmed PIM features:
– Microchip’s AEC-Q100-qualified dsPIC33CK256MP506 digital signal controller
– 100 MIPS for fast deterministic performance in time-critical control applications
– Dual Flash Panels – to enable live update of code while power supply is running
– High analog integration for reduced BOM costs and minimum system size
– PWMs with 250 ps resolution
Firmware updates for the dsPIC33CK PIM will be available for download from Microchip’s website.
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.
Availability
The TDTTP2500B066B-KIT is available through Digi-Key and Mouser.
