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Overview
| Topology | Power Factor Correction |
Description
This reference design is a 4-kW CCM totem-pole PFC with F280049/F280025 control card and LMG342x EVM board. This design demos a robust PFC solution, which avoids isolated current sense by putting the controller's ground in the middle of a MOSFET leg. Benefitting from non-isolation, AC current sense can be implemented by high-speed amplifier OPA607, helping to realize reliable over-current protection. In this design, efficiency, thermal image, AC drop, lighting surge and EMI CE are fully validated. With completed test data, this reference design shows the maturity of totem-pole PFC with C2000 and GaN and is a good study platform for high efficiency products' PFC stage design.
Features
- Maximum power: 4000-W @ 200-V to 277-V nominal
- Peak efficiency: >= 99.1% ; power factor : ~0.999-Current sensing by non-isolated high-speed amplifier
- Single phase CCM totem pole with TI Gen2 daughter card
- Compatible with TMS320F28004x/F28002x digital controllers
- FSI communication port included
Typical applications
- Air conditioner outdoor unit
- Industrial, Dual digital controllers for primary & secondary side control, Single digital controller with primary side control
- Network PSU with 48V output, Server PSU with 12V output & digital control (<=1kW), Server PSU with 12V output & digital control (>1kW)
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | VR(V (AC)) | Safety Class | dV/dt(V/µs) | DF @ 1 kHz(%) | RISO | Pitch(mm) | L(mm) | W(mm) | H(mm) | Packaging | L(µH) | IRP,40K(A) | ISAT,30%(A) | RDC typ.(mΩ) | fres(MHz) | VOP(V) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WCAP-FTX2 Film Capacitors, Across the mains, 1.2 µF | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-FTX2 Film Capacitors | Capacitance1.2 µF | Rated Voltage275 V (AC) | Safety ClassX2 | Rate of Voltage Rise130 V/µs | Dissipation Factor0.1 % | Insulation Resistance8.33 GΩ | Pitch27.5 mm | Length31 mm | Width13 mm | Height22 mm | PackagingBulk | – | – | – | – | – | – | MountBoxed THT | ||||
 | WE-MAPI SMT Power Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-MAPI SMT Power Inductor | – | – | – | – | – | – | – | Length2.5 mm | Width2 mm | Height1 mm | – | Inductance10 µH | Performance Rated Current0.9 A | Saturation Current @ 30%1.7 A | DC Resistance733 mΩ | Self Resonant Frequency25 MHz | Operating Voltage80 V | MountSMT |