TI E2E support forums
TI E2E support forums
  • User
  • Site
  • Search
  • User
  • E2E™ design support >
  • Forums
    • Amplifiers
    • Audio
    • Clock & timing
    • Data converters
    • DLP® products
    • 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 98 results View by: Thread Post Sort by
  • UCC28911: How to disable UCC28911

    Aki Li
    Aki Li
    TI Thinks Resolved
    Part Number: UCC28911 Customer used UCC28911 for the aux power for the AC-DC PSU. Now they were required to shut down UCC28911 if there was external power supply at the output. Thus, they needed to find a way to disable UCC28911 when required, like MCU…
    • 4 months ago
    • Power management
    • Power management forum
  • RE: UCC28911: issue of PMP10676

    Hely Zhang
    Hely Zhang
    Hi, Sean and Mike, I am now designing a 15V/300mA high voltage buck with UCC28911, same topology as PMP10767, now it can only output 145mA at less than 80VDC input voltage, if I increase input voltage to >80VDC, then output voltage will drop, and keep dropping…
    • 1 month ago
    • Power management
    • Power management forum
  • Answered
  • UCC28911: Intermittent Operation

    WB
    WB
    Resolved
    Part Number: UCC28911 Hello, UCC28911 is used as follows: VIN: 270V ~ 370VDC VOUT: 14V/100mA x3 secondary outputs Lp = 3.3mH Lk = 31uH NPA = 5.51 NPS = 6.96 Schematic is attached. An Intermittent Operation is observed where the chip will work for a minute…
    • Resolved
    • 3 months ago
    • Power management
    • Power management forum
  • RE: UCC28911: Stops switching

    Mike O'
    Mike O'
    Hello, The circuit is most likely shutting down due to OCP, OVP or input under voltage fault. The following link will bring you to an application note that describes what the issues with this fault sensing and how to resolve. https://www.ti.com/lit/pdf…
    • 4 months ago
    • Power management
    • Power management forum
  • Answered
  • UCC28911: Vbrownout voltage

    Takeshi Sasaki
    Takeshi Sasaki
    Resolved
    Part Number: UCC28911 Hi team, Referring to the application note of snva750, the Vbrownout = 43V at the equation (1). Could you give me comment on how to derive the value as 43V? The lowest input voltage looks to be came from 85Vac, and the datasheet…
    • Resolved
    • 6 months ago
    • Power management
    • Power management forum
  • RE: UCC28911: The maximum output current capability for HV Buck with UCC28911

    Gabriel Xu
    Gabriel Xu
    One more questions about valley switch mechnisam. Below diagram is capture from UCC28911 datasheet. Base on my understanding, when VDS drop nearby zero means MOSFET turn-on, and I marked three turn on cycle with red circle. I don't understand what the…
    • 9 months ago
    • Power management
    • Power management forum
  • Answered
  • UCC28911: Offline switcher buck design

    Prithvi Raj Narendra1
    Prithvi Raj Narendra1
    Resolved
    Part Number: UCC28911 Other Parts Discussed in Thread: UCC28700-Q1 , UCC28700 We are developing a cost sensitive device that would be powered from a 48V/60V Lithium battery pack in an electric vehicle. Overall the main components of the device would have…
    • Resolved
    • 11 months ago
    • Power management
    • Power management forum
  • UCC28911: Can this part be used at an input of up to 600V?

    Lauren Mayfield
    Lauren Mayfield
    TI Thinks Resolved
    Part Number: UCC28911 Other Parts Discussed in Thread: LM5021 Hi team, The parameters indicate that Vinmax=450V, but I could not see a confirmation of the limitation in the datasheet. Is there any reason someone could not use this device up to 600V ? …
    • over 1 year ago
    • Power management
    • Power management forum
  • UCC28911: Non-insulated design capable of output 2.5W (5V, 0.5A)

    Y.Ottey
    Y.Ottey
    TI Thinks Resolved
    Part Number: UCC28911 Other Parts Discussed in Thread: UCC28730 , UCC28910 Dear TI Team Our customers are looking for reference designs and devices that meet the following conditions: ・ AC85 ~ 264V input ・ 5V 0.5A output ・ Non-insulated type I searched for…
    • over 1 year ago
    • Power management
    • Power management forum
  • Answered
  • UCC28911: Low output voltage

    Kuramochi Tadahiko
    Kuramochi Tadahiko
    Resolved
    Part Number: UCC28911 Hi, My customer is considering using UCC28911 because they require small solution. Conditions are below; VIN=AC100V VOUT=2V IOUT=600mA Do you think that UCC28911 can output 2V? If no, what is the cause of the lower voltage limit…
    • Resolved
    • over 1 year ago
    • Power management
    • Power management forum
>

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

  • Ask a new question
About TI
Company News & events Investor relations Corporate citizenship Careers Contact us
Quick links
TI E2E™ design support forums Customer support center Packaging Quality & reliability TI university program myTI FAQ
Buying
Ordering resources Ordering help & FAQs BOM & cross reference tool Quick add to cart Authorized distributors
Connect with us

Texas Instruments has been making progress possible for decades. We are a global semiconductor company that designs, manufactures, tests and sells analog and embedded processing chips. Our products help our customers efficiently manage power, accurately sense and transmit data and provide the core control or processing in their designs.

Cookie policy Privacy policy Terms of sale Terms of use Trademarks Website feedback

© Copyright 1995-2021 Texas Instruments Incorporated. All rights reserved.