This reference design is a high-density and high-efficiency, 5kW power factor correction (PFC) converter implemented with TI high-performance Gallium Nitride (GaN) power switches. A peak system efficiency of 99.2% with an open-frame power density of 120W/in3 was measured. The power stage uses a two-phase totem pole PFC in a brand new zero current detection (ZCD) based control mechanism. The new control method operates with variable frequency and maintains zero voltage switching (ZVS) over all operating conditions. The control is implemented with a TMS320F280039C high-performance microcontroller and the LMG3527R030 GaN field effect transistor (FET) with integrated ZCD sensing. The operating frequency range of the converter is approximately between 100kHz and 800kHz.
| Output voltage options | PMP23475.1 |
|---|---|
| Vin (Min) (V) | 180 |
| Vin (Max) (V) | 265 |
| Vout (Nom) (V) | 400 |
| Iout (Max) (A) | 12.5 |
| Output Power (W) | 5000 |
| Isolated/Non-Isolated | Non-Isolated |
| Input Type | AC |
| Topology | Boost- PFC |
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
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Test results for the reference design, including efficiency graphs, test prerequisites and more
Detailed schematic diagram for design layout and components
Complete listing of design components, reference designators, and manufacturers/part numbers
Detailed overview of design layout for component placement
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Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| Test report | GaN-Based 5kW Two-Phase Totem-Pole PFC Reference Design with Zero Current Detection | PDF | HTML | Mar. 06, 2025 |
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