• RE: UCC28064A: Distortion at high input voltage

  

  Ulrich Goerke

  Hello Hirotsugo-san, The current is distorted at 200V because of the reason that I posted 14 days ago. 200Vac input is higher than 115Vac, so the distortion is higher. At 230Vac the distortion will be worse than at 200Vac, and at 264Vac it will be even…

  • 3 days ago
  • Power management
  • Power management forum
Answered

• UCC28064A: About ZCD_B in single mode

  

  kiri yasuda

  Resolved

  Part Number: UCC28064A Tool/software: Hello. I have asked about single mode operation so far and the circuit works fine. Please let me know if there is any problem with single mode operation with the ZCD_B pin (pin 1) in the OPEN state. thanks.

  • Resolved

  • 2 months ago
  • Power management
  • Power management forum
Answered

• UCC28064A: About single mode startup

  

  kiri yasuda

  Resolved

  Part Number: UCC28064A Tool/software: Hello. The UCC28064A is continuously operated in single-phase mode to operate the PFC circuit. Look at the waveforms [ch1: FET_Vds, ch2: IL, ch3: FET_Vgs, ch4: VCin]. This shows the waveform at startup, where the…

  • Resolved

  • 3 months ago
  • Power management
  • Power management forum

• UCC28064A: UCC28064A Recommended Operating Ranges

  

  Yoon Jongkyu

  Part Number: UCC28064A Tool/software: Hello. I am waiting for your reply. Thanks. ======================================== Hello Yoon, Thank you for bringing this matter to our attention. I have notified internal management of these issues. I cannot…

  • 6 months ago
  • Power management
  • Power management forum
Answered

• UCC28064A: UCC28064A Recommended Operating Ranges

  

  Yoon Jongkyu

  Resolved

  Part Number: UCC28064A Tool/software: Hello. If you look at the datasheet of all semiconductor components, there are Absolute Maximum Rating and Recommended Operating Conditions. Also, some companies kindly include the following phrases. 1. Functional…

  • Resolved

  • 7 months ago
  • Power management
  • Power management forum

• RE: UCC28064A: Is switching expected at VINAC 0v points?

  

  Ulrich Goerke

  Hello Tom, Actually i was typing a reply to your last posting when your more recent one came in. I'm glad things are looking much better; almost "textbook" TM interleaving. I was going to suggest more filtering on CS because the in-phase…

  • 3 months ago
  • Power management
  • Power management forum
Answered

• UCC28064A: Decrease distortion near zero crossing to improve of the THD

  

  Takahara Motoki

  Resolved

  Part Number: UCC28064A Tool/software: Hi, TI, I would like to reduce distortion near the zero crossings to improve THD. I tried changing the following constants but there was no improvement. (1)Rza1=Rza2=Rzb1=Rzb2=8.2kΩ (2)Rza1=Rza2=Rzb1=Rzb2=15k…

  • Resolved

  • 3 months ago
  • Power management
  • Power management forum
Answered

• UCC28064A: About using in single mode

  

  kiri yasuda

  Resolved

  Part Number: UCC28064A Tool/software: Hello. We have designed a UCC28064A board in interleaved mode, but our customer wants a single mode design on the same board. The question is similar to the previous forum attached. The answer is that running in…

  • Resolved

  • 4 months ago
  • Power management
  • Power management forum
Answered

• UCC28064A: UCC28064A Reset Mechanism

  

  Bekir Fincan

  Resolved

  Part Number: UCC28064A Tool/software: Hi, I want to reset UCC28064A when it latches due to some kind of faults such as CS-open, TSET -open and short operation, open loop, UVLO, external disable, brownout and redundant overvoltage (HVSEN). Although I…

  • Resolved

  • 8 months ago
  • Power management
  • Power management forum
Answered

• UCC28064A: Delete Post Request

  

  user5303116

  Resolved

  Part Number: UCC28064A Tool/software: Hi, Please delete the following post e2e.ti.com/.../ucc28064a-about-the-operation-and-how-to-use-it Thank you,

  • Resolved

  • 5 months ago
  • Site support
  • Site support forum

Didn't find what you are looking for? Post a new question.