Bridgeless Power Factor Correction Converter
Texas Instruments
Description
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.
End equipment reference diagrams
| Application area | End equipment |
|---|---|
|
https://www.ti.com/solution/rack-server-psu-with-48v-output#referencedesigns |
|
|
https://www.ti.com/solution/server-psu-with-12-v-output#referencedesigns |
Features
Full digital control of bridgeless PFC power converter95 VAC to 265 VAC input voltage range400 VDC bus output operating up to 300 WFull load efficiency greater than 93% and power factor of 0.98 at 50% or greater loadC2000™ Piccolo™ TMS320F28035 MCU is the digital controller: operating the bridgeless PFC power converter at a PWM frequency of 200 KHzFully-functional evaluation board includes software: hardware design files: quick start graphical interface and step-by-step documentationNOTE: Software for this board is located inside the controlSUITE™ software package. Download controlSUITE at ti.com/controlsuite. Once installed: navigate to High Voltage Bridgeless PFC Developers Kit" under the Development Tools -> Digital Power section. "
Applications
- Rack & server PSU with 48-V output
- Server PSU with 12-V output
Product categories
- Arm-based microcontrollers
