Answered

• RE: UCC28064A: About OCP operation of UCC28064A

  

  Mike O'

  Resolved

  Hello, If the output is loaded and you trigger OCP the FETs will stop switching and the boost capacitor voltage will decrease. That is what is expected. This function is really for inrush current limiting to protect the FETs. PFC boost design are protected…

  • 8 months ago
  • Power management
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Answered

• UCC28064A: About the phase difference between channel A and channel B

  

  shibanoki.takashi

  Resolved

  Part Number: UCC28064A Tool/software: Hi We are activating interleaved PFC with "UCC28064A". When I take out the electric current of rated load, the difference between A-phase and B-phase is 180 degrees and the PFC works properly. However, when…

  • Resolved

  • 5 months ago
  • Power management
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• UCC28064A: UCC28064A: Current distortion at peak voltage and simultaneous switching #2

  

  Takahara Motoki

  Part Number: UCC28064A HI TI, I have Current distortion issue with UCC28064A at 85Vac,160W. Current distortion occurs near peak voltage. Could you give me some advice on the solution? Regards,

  • 9 months ago
  • Power management
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Answered

• RE: UCC28064A: UCC28064AEVM

  

  Mike O'

  Resolved

  Thanks for letting me know. Regards,

  • 8 months ago
  • Power management
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• UCC28064A: UCC28064A

  

  Sam Abeysekera

  TI Thinks Resolved

  Part Number: UCC28064A Hi Ulrich Ref PMP30763 Rev_C PFC Schematic.SchDoc 1. What is the purpose D14 ? is this for protection ? Please advice Regards Sam

  • over 1 year ago
  • Power management
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Answered

• UCC28064A: Question about Paralleling two UCC28064A

  

  Yunus Basegmez

  Resolved

  Part Number: UCC28064A Other Parts Discussed in Thread: UCC28070 I have a question for paralleling two UCC28064A. If we use guidelines of sluaad0, Will the total system working as 4 phase with 90 degree shift between phase or 4 phase with 180 degree shift…

  • Resolved

  • over 1 year ago
  • Power management
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• UCC28064A: Controller selection for charger design

  

  Mohammed Suffiyan

  TI Thinks Resolved

  Part Number: UCC28064A Other Parts Discussed in Thread: BQSTUDIO , BQ76952 , BQ76940 , EV2400 , Hello Team, I am new to charger development and I have a few questions to understand better about TIs ecosystem for charger development. I have previously designed…

  • 9 months ago
  • Power management
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• UCC28064A: PFC choke without the auxilary winding

  

  Mustafa Mert Sarıkaya

  Part Number: UCC28064A Other Parts Discussed in Thread: AMC1301 , Hi, According (TM)transient mode control PFC referance designs I have to use inductor with auxilary windings for ZCD pins. I want to use standart fixed inductor in the PFC design is there…

  • 9 months ago
  • Power management
  • Power management forum
Answered

• RE: UCC28064A: PMP30763 Rev_C UCC28064A

  

  Ulrich Goerke

  Resolved

  Hi Sam, Diode D2 and transistor Q11 form an external soft-start function for the UCC28064A. At start-up, when AUX_15V is low, VCC input voltage is below spec and U3 does not function. VREF is driven internally to 0V (AGND). The base of Q11 is pulled to…

  • over 1 year ago
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• UCC28064A: UCC28064A Voltage Loop Compensation

  

  D R

  TI Thinks Resolved

  Part Number: UCC28064A Hello, Do you have any further readings I could use to better understand how the equations for Voltage Loop Compensation (section 9.2.2.11) are derived? I am trying to understand the logic behind Rz, Cz, and Cp selections. Thanks…

  • over 1 year ago
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