This design is a digitally controlled, bridgeless, 300W, power factor correction (PFC) converter. The distinguishing characteristic of a bridgeless PFC converter is that it eliminates the need for a diode bridge at the input. This reduces power losses that normally occur in a diode bridge and, as a result, improves overall system efficiency. For this design, a C2000™ Piccolo™ TMS320F28035 microcontroller (MCU) is the digital controller for the PFC converter, controlling the two boost power stages that comprise the bridgeless PFC converter. By operating the stages alternatively during the positive and negative half cycles of the AC mains voltage, the Piccolo MCU implements both the AC-to-DC rectification as well as power factor control. This design achieves full load efficiency greater than 93% and power factor of greater than 0.98 at 50% or greater load.
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Detailed schematic diagram for design layout and components
Complete listing of design components, reference designators, and manufacturers/part numbers
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.
CAUTION: This equipment operates at high voltages and currents which can result in hazardous electrical shock. Please make sure you understand and follow all necessary safety precautions prior to purchasing and operating.
TMDSHVBLPFCKIT is a DIMM100 controlCARD based motherboard evaluation module (...)
| Type | Title | Date | ||
|---|---|---|---|---|
| Application note | Digitally Controlled Bridgeless Power Factor Correction (BL PFC) using C2000 MCU (Rev. A) | PDF | HTML | Oct. 29, 2020 | |
| User guide | Digitally Controlled BL PFC Converter Quick Start Guide | May 27, 2014 |
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