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  ACGUY

  • 2 months ago
  • Power management
  • Power management forum

  UCC256301: Operation at light load

  • Resolved

  Part Number: UCC256301 Hello E2E, Please see the attached file. At light load, the switching timing
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  Benjamin Lough

  • 1 month ago
  • Power management
  • Power management forum

  RE: UCC256301: Fail ! unable to work properly

  Hi Eilision, You cannot apply voltage directly to VCC as this would interfere with the HV startup function wanting to charge up VCC to 26V before switching begins and would fail to start up. But if you apply the external voltage to the anode of D11...
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  louie li

  • 4 months ago
  • Power management
  • Power management forum

  UCC256301: old version 500W LLC EVM request

  TI Thinks Resolved

  Part Number: UCC256301 Dear engineer, I saw a UCC256301 500W LLC EVM DESIGN GUIDE months before in TI.com , which has no PFC and supply +-42V. I Need that pdf file for designing. Can you provide me with it? Thanks! Regards, Louie,
• 

  Nick52556

  • 5 months ago
  • Power management
  • Power management forum

  UCC256301: Bring-up Debug Sequence? No FB voltage

  TI Thinks Resolved

  Part Number: UCC256301 I am trying to bring up a UCC256301 LLC circuit. I am wanting to do so "softly" so it doesn't explode if something is wrong. But it seems like the AC circuitry needs to be present to get the zero cross waveforms to...
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  Goran Djogo

  • 7 months ago
  • Power management
  • Power management forum

  UCC256301: current control during soft start?

  TI Thinks Resolved

  Part Number: UCC256301 We are considering an application of the resonant controller UCC256301 for a HV capacitor charger. The capacitor charger will have LLC resonant converter topology. My questions: 1) Can UCC256301 control primary current of...
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  neguse gebremikael

  • 10 months ago
  • Power management
  • Power management forum

  UCC256301: UCC256301

  • Resolved

  Part Number: UCC256301 Is there TI design calculator spreadsheet for UCC25630x, in my case UCC25631
• 

  aash mohd

  • 8 months ago
  • Power management
  • Power management forum

  UCC256301: LLC resonant

  TI Thinks Resolved

  Part Number: UCC256301 hi, I am new to LLC resonant bridge convertor design . I am confused to how control current and voltage individually for example at time t0 , i want a voltage say 44V and current 30A and at time t1 , i want voltage say 54V...
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  Anup_Shetty

  • 9 months ago
  • Power management
  • Power management forum

  UCC256301: LLC Resonant converter for variable power supply design

  • Resolved

  Part Number: UCC256301 Can we design a variable power supply with the help of LLC Resonant
• 

  Benjamin Lough

  • 8 months ago
  • Power management
  • Power management forum

  RE: UCC256301: X-capacitor discharge feature getting turned on while input voltage still present

  Hi Aleksey, What I normally do is compare the resonant current to the ISNS waveform and make sure there isn't significant phase shift between the two waveforms. If there is excessive bypass capacitance the ISNS waveform will be significantly delayed...
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  Matthias Klein

  • 11 months ago
  • Power management
  • Power management forum

  UCC256301: Fail ? I become not 100V

  TI Thinks Resolved

  Part Number: UCC256301 Hello! I have a problem with the circuit. The circuit does not transmit the voltage correctly. I assume it is due to the resonant circuit? Does anyone have pictures of measurements on VCR? Is it a sign of the incorrectly parameterized...

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