This reference design is a 3.6kW, single-phase, 3-level flying cap totem-pole bridgeless power factor correction (PFC) converter targeting modular hardware system common redundant power supply (M-CRPS) servers. The PFC operates at continuous conduction mode (CCM) with peak efficiency of 99%. The power stage is followed by a baby boost converter, which helps to greatly reduce the size of the bulk capacitor. This design also includes e-meter functionality with 0.5% accuracy using AMC1306 as a current sensing device, eliminating the need for external power metering ICs. An alternative low- cost current sensing option using TMCS1133 is also provided in this design. The LMG3522 top-side cooled GaN device with integrated driver and protection, enables higher efficiency and reduces power supply size and complexity. The TMDSCNCD28P55X C2000™ real-time microcontroller is used for all the advanced controls including PFC control and e-metering.
| Output voltage options | PMP41166.1 |
|---|---|
| Vin (Min) (V) | 90 |
| Vin (Max) (V) | 265 |
| Vout (Nom) (V) | 385 |
| Iout (Max) (A) | 9.35 |
| Output Power (W) | 3599.75 |
| 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 overview of design layout for component placement
Complete listing of design components, reference designators, and manufacturers/part numbers
Files used for 3D models or 2D drawings of IC components
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
Detailed schematic diagram for design layout and components
Includes TI products in the design and potential alternatives.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Test report | 3.6kW 3-Level Flying Cap Totem-Pole Bridgeless PFC Reference Design | PDF | HTML | Mar 19, 2026 |
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