UCD3138: question about bridgeless totem pole pfc with ucd3138

Hello Liwei,

The UCD3138x controllers can be used in many different PFC topologies. We currently showcase 6x PFC topologies on 4x UCD hardware. A comparison between the different bridgeless topologies can be found on our Bridgeless Topologies video (https://www.ti.com/video/6123653129001).

Relevant UCD3138x Documentation:

• General PFC
  • "PFC THD Reduction and Efficiency Improvement by ZVS or Valley Switching": https://www.ti.com/lit/an/slua644/slua644.pdf
  • "UCD3138 PFC Tuning": https://www.ti.com/lit/an/slua709/slua709.pdf 
  • "Using the UCD3138PFCEVM-026": https://www.ti.com/lit/ug/sluu885c/sluu885c.pdf 
  • "PFC using peak current-mode control": https://www.ti.com/lit/an/slyt838/slyt838.pdf 
  • "Reduce Electrical Stresses in a PFC Stage during an AC Drop Test with UCD3138": https://www.ti.com/lit/an/slua768a/slua768a.pdf 
  • "A novel charge-mode control algorithm for PFC": https://www.ti.com/lit/an/slyt850/slyt850.pdf 
  • "Increase PF by digitally compensating for PFC EMI-capacitor reactive current": https://www.ti.com/lit/an/slyt673/slyt673.pdf 
  • "THD Reduction of DCM PFC with UCD3138": https://www.ti.com/lit/an/slua764/slua764.pdf 
• Single Phase PFC
  • "Designing a UCD3138 Controlled Single Phase PFC": https://www.ti.com/lit/an/slua708/slua708.pdf 
• Interleaved PFC
  • Evaluating UCD3138 in Interleave PFC or Bridgeless PFC": https://www.ti.com/lit/an/slua677/slua677.pdf  "
  • Designing a UCD3138 Controlled Interleaved PFC": https://www.ti.com/lit/an/slua712/slua712.pdf
  • "Digital current balancing for an interleaved boost PFC": https://www.ti.com/lit/an/slyt517/slyt517.pdf 
• Bridgeless PFC
  • "Evaluating UCD3138 in Interleave PFC or Bridgeless PFC": https://www.ti.com/lit/an/slua677/slua677.pdf  
  • "Designing a UCD3138 Controlled Bridgeless PFC": https://www.ti.com/lit/an/slua713/slua713.pdf 
• TTPL PFC
  • "Are you ready for Totem-pole PFC?": https://www.ti.com/lit/ta/ssztc16/ssztc16.pdf

Additionally, you can also view this E2E post: https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1417043/ucd3138-does-ucd3138-have-the-algorithm-about-pfc-with-a-bridgeless-totem-pole

The firmware for the single-phase, interleaved and bridgeless PFC firmware is available on the UCD PFC EVM firmware (https://www.ti.com/tool/UCD3138FW-PFC). We do have UCD3138 firmware available for the PMP20873 TTPL PFC. Please reach out to your local FAE for more information.

Regards,

Jonathan Wong