• UCC28750-CALC: UCC28781-Q1 decrzpted simulation Model for Symetrix

  

  Oscar Liborio

  TI Thinks Resolved

  Part Number: UCC28750-CALC Other Parts Discussed in Thread: UCC28781-Q1 Hello, Do we have a decrypted version of the Model which cis compatible with symetrix for the UCC28781-Q1? PS. I could selected the right device on the drop list so I have picked…

  • 2 months ago
  • Processors
  • Processors forum

• UCC28781-Q1: Low Input Voltage Range Startup vs. Minimum Operating Voltage Offline Flyback Converters

  

  Eric Lewis

  TI Thinks Resolved

  Part Number: UCC28781-Q1 Other Parts Discussed in Thread: UCC28781 Hi, Looking at wide voltage AC/DC supply based around the UCC28781. Reviewed some E2E threads on custom operating voltages. UCC28781: Voltage input range - Power management forum…

  • 2 months ago
  • Power management
  • Power management forum

• UCC28781-Q1: UCC28781

  

  vinayak lele

  Other Parts Discussed in Thread: UCC28781-Q1 , UCC28782 , UCC28781 Tool/software: Hi, I am designing isolated DC to DC converter for EV 2w/3w automotive application with following specification. Electrical: DC-DC Converter (72V to 12V) Input Voltage…

  • over 1 year ago
  • Power management
  • Power management forum

• UCC28781-Q1: Calculating VBUR target voltage VBUR_tgt

  

  Ashlesh Bhat

  TI Thinks Resolved

  Part Number: UCC28781-Q1 Other Parts Discussed in Thread: UCC28781 , UCC28782 Hello, I am going through the design steps in the datasheet of UCC28781-Q1 to design a AC - DC converter. But I am stuck at VBUR calculations in 8.2.2.4 which says "The…

  • over 2 years ago
  • Power management
  • Power management forum
Answered

• UCC28781-Q1: Component purpose question

  

  Valentinas Pancerovas

  Resolved

  Part Number: UCC28781-Q1 Can R37, R38, R20 be replaced by a single 19.6k resistor? What purpose do D11 and D12 serve? What consequences will occur if they were to be removed? Thanks

  • Resolved

  • over 2 years ago
  • Power management
  • Power management forum

• UCC28781-Q1: Max Power Conversion possible with UCC28781

  

  Vaibhav Chandra

  TI Thinks Resolved

  Part Number: UCC28781-Q1 Other Parts Discussed in Thread: UCC28781 , , UCC28782 Hello, Pout <400W is possible to achieve with UCC28781 IC, with Single stage PFC Forward converter? Is Simulation model available for this IC? Thanks

  • over 3 years ago
  • Power management
  • Power management forum

• UCC28781-Q1: EN/Dis function implementation

  

  Valentinas Pancerovas

  TI Thinks Resolved

  Part Number: UCC28781-Q1 What would be the best way to implement this without damaging the IC?

  • over 2 years ago
  • Power management
  • Power management forum

• UCC28781-Q1: Transformer inductance calculation

  

  Valentinas Pancerovas

  TI Thinks Resolved

  Part Number: UCC28781-Q1 Other Parts Discussed in Thread: UCC28781EVM-053 , Hello TI, We are doing calculations on a design that should have 650-900Vin and 68V 0.6A output. I have never seen transformers with inductance in 10mH range. Is our calculation…

  • over 2 years ago
  • Power management
  • Power management forum
Answered

• UCC28781-Q1: Depletion mosfet at >1kV

  

  Valentinas Pancerovas

  Resolved

  Part Number: UCC28781-Q1 Other Parts Discussed in Thread: UCC28C56EVM-066 , UCC28781 It seems that >1kV depletion nmos costs a fortune, therefore i am looking for other possible solutions. Maybe a zener to drop 30V via high voltage resistors? Problem…

  • Resolved

  • over 2 years ago
  • Power management
  • Power management forum
Answered

• UCC28781-Q1: Feedback signal before vs after CM choke

  

  Valentinas Pancerovas

  Resolved

  Part Number: UCC28781-Q1 Other Parts Discussed in Thread: TL431 Hello TI, Would it be a good idea to place the voltage feedback signal "VOUT" after the L403? Currently its at before the CM choke but it complicates the polygon pours + spreads the noisy…

  • Resolved

  • over 2 years ago
  • Power management
  • Power management forum

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