This reference design is a 3.6kW, single-phase, 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) at AC peak where inductor current is high, and operates at triangular conduction mode (TCM) with zero-voltage switching (ZVS) at AC low area where the inductor current is low, achieving both high efficiency and high-power density. The power stage is followed by a baby boost converter, which helps to 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. This design works with the LMG3427R30 gallium nitride (GaN) device, which has an integrated zero-current detection (ZCD) circuit for TCM control. The F28003x C2000™ real-time microcontroller is used for all the advanced controls including PFC control and e-metering.
| Output voltage options | PMP23537.1 |
|---|---|
| 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
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| Type | Title | Date | ||
|---|---|---|---|---|
| Test report | 3.6kW CCM-TCM Multimode Controlled Totem-Pole Bridgeless PFC Reference Design | PDF | HTML | Mar. 14, 2025 |
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