Two-Phase Interleaved Power Factor Correction Converter with Power Consumption Metering

This design is a digitally controlled two-phase interleaved 700W power factor correction converter with added power metering capabilities. The power factor correction converter's two 180° phase-shifted boost power stages use a C2000™ Piccolo™ microcontroller, which also monitors line and neutral voltage waveforms for power metering functions. This design is able to achieve 97% efficiency and 1.5% THD (full load) with a power factor greater than 0.98. This design is an excellent choice for offline applications and AC/DC power supplies by minimizing power losses in the power stage, mitigating the reliability impact of harmonic distortion, and providing near-peak power factors.

characteristic

• ● Full digital control of double interleaved PFC power converter topology
• ● 95 VAC to 265 VAC universal input
• ● 400 VDC bus output operation up to 700 watts
• ● Power factor at 200 KHz switching frequency is 0.99, THD at full load is 1.5%
• ● Supports power monitoring including rectified input voltage, RMS input voltage, RMS input power and input line frequency
• ● Full-featured evaluation board includes software, hardware design files, quick-start graphical interface and step-by-step documentation.

Note: The software for this board is available in the controlSUITE™ software package. Please download controlSUITE from https://www.ti.com/tool/controlsuite . Once installed, navigate to "High Voltage Interleaved PFC Kit" under the "Development Tools" -> "Digital Power" section.