TI E2E support forums
TI E2E support forums
  • User
  • Site
  • Search
  • User
  • E2E™ design support >
  • Forums
    • Amplifiers
    • Audio
    • Clock & timing
    • Data converters
    • DLP® products
    • Enterprise Automation Integration
    • Interface
    • Isolation
    • Logic
    • Microcontrollers
    • Motor drivers
    • Power management
    • Processors
    • RF & microwave
    • Sensors
    • Site support
    • Switches & multiplexers
    • Tools
    • Wireless connectivity
    • Archived forums
    • Archived groups
  • Technical articles
    • Analog
    • Automotive
    • DLP® technology
    • Embedded processing
    • Industrial
    • Power management
  • TI training
    • Tech days
    • Online training
    • Live events
    • Power Supply Design Seminar
  • Getting started
  • 简体中文
  • More
  • Cancel


Search tips
Showing 7 results View by: Thread Post Sort by
    Answered
  • UCC28781EVM-053: What does Q100 in EVM do?

    Valentinas Pancerovas
    Valentinas Pancerovas
    Resolved
    Part Number: UCC28781EVM-053 Other Parts Discussed in Thread: UCC28781 Hello TI, Could you please explain how does Q100 work and what is it for? Can it be replaced with BC807-25LT1G ? https://www.onsemi.com/pdf/datasheet/bc807-16lt1-d.pdf Thank you in…
    • Resolved
    • 3 months ago
    • Power management
    • Power management forum
  • Answered
  • UCC28781-Q1: XCD and P13 pins when only DC input is used

    Valentinas Pancerovas
    Valentinas Pancerovas
    Resolved
    Part Number: UCC28781-Q1 Other Parts Discussed in Thread: UCC28781EVM-053 HI TI, We are building a board based on UCC28781EVM-053 where only DC input is used.- Does that mean we should not include the marked block, also ground the XCD signal? Thank you…
    • Resolved
    • 9 months ago
    • Power management
    • Power management forum
  • UCC28781-Q1: Transformer inductance calculation

    Valentinas Pancerovas
    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…
    • 9 months ago
    • Power management
    • Power management forum
  • Answered
  • UCC28782EVM-030: Minimum working input voltage

    Valentinas Pancerovas
    Valentinas Pancerovas
    Resolved
    Part Number: UCC28782EVM-030 Other Parts Discussed in Thread: UCC28782 , , UCC28781EVM-053 This EVM states 90Vrms minimum input voltage, what happens at lower input voltage? Can this IC be used at 60V input?
    • Resolved
    • 9 months ago
    • Power management
    • Power management forum
  • UCC28781: DC/DC isolated 30W 5V output

    Jack
    Jack
    TI Thinks Resolved
    Part Number: UCC28781 Other Parts Discussed in Thread: UCC28782 , , UCC5304 Hi, I want to design a with following specifications: Input voltage: 30V-200V (if too wide, can be made in two options, 30V - 90V, 80V - 200V) Output voltage: 5V 6A Currently,…
    • 10 months ago
    • Power management
    • Power management forum
  • Answered
  • RE: UCC28781: Voltage input range

    Ulrich Goerke
    Ulrich Goerke
    Resolved
    Hello Valentinas, Yes, the IC can be used to control a ZVS Flyback converter with a 40V-900V input range. I am assuming that this is a DC input, not AC. The IC is not connected directly to such voltages, however, it has signal inputs to which scaled signals…
    • 9 months ago
    • Power management
    • Power management forum
  • Answered
  • RE: UCC28781: Does not start up

    Ulrich Goerke
    Ulrich Goerke
    Resolved
    Hello Valentinas, Thank you for the additional information. It is going to take me a little while to analyze it all and provide some meaningful guidance. But let me address your last question first. I agree with your RDM calculation and you do have a…
    • 8 months ago
    • Power management
    • Power management forum

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

  • Ask a new question