Continuous-Conduction-Mode (CCM) Totem-pole power factor correction (PFC) is a simple but efficient power converter. To achieve 99% efficiency, there are many design details that need to be taken into account. The PMP20873 reference design uses TI’s 600VGaN power stage, LMG3410, and TI’s UCD3138 digital controller. The design overview provides more details on the CCM Totem-Pole topology operation, gives the detail design considerations of the circuit, and provides magnetics and firmware control design considerations. This converter design operates at 100KHz. A soft start at AC line crossover minimizes current spike and lowers THD. The PFC Firmware measures AC current and PFC output voltage in real-time and predicts the dead time needed for the switch node to complete a full swing. The adaptive dead time control effectively minimizes both switching loss and GaN FET body diode conduction loss. A GUI is available to support parameter setting and control loop tuning.
| Output voltage options | PMP20873.1 |
|---|---|
| Vin (Min) (V) | 108 |
| Vin (Max) (V) | 305 |
| Vout (Nom) (V) | 385 |
| Iout (Max) (A) | 2.6 |
| Output Power (W) | 1001 |
| Isolated/Non-Isolated | Non-Isolated |
| Input Type | AC |
| Topology | Boost- CCM |
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
Download ready-to-use system files to speed your design process.
Test results for the reference design, including efficiency graphs, test prerequisites and more
Detailed schematic diagram for design layout and components
Detailed schematic diagram for design layout and components
Complete listing of design components, reference designators, and manufacturers/part numbers
Complete listing of design components, reference designators, and manufacturers/part numbers
Detailed overview of design layout for component placement
Detailed overview of design layout for component placement
Files used for 3D models or 2D drawings of IC components
Files used for 3D models or 2D drawings of IC components
Design file that contains information on physical board layer of design PCB
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
PCB layer plot file used for generating PCB design layout
Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Test report | PMP20873 Test Results | Jun. 12, 2017 | |
| Technical article | GaN reliability standards reach milestone | PDF | HTML | Sep. 18, 2017 | |
| Technical article | The power to innovate industrial design | PDF | HTML | Mar. 27, 2017 | |
| Technical article | The power to do even more with GaN | PDF | HTML | Mar. 25, 2017 |
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