TI E2E support forums
TI E2E support forums
  • User
  • Site
  • Search
  • User
  • E2E™ design support >
  • Forums
    • Amplifiers
    • API solutions
    • 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
  • TI training
    • Tech days
    • Online training
    • Live events
    • Power Supply Design Seminar
  • Getting started
  • 简体中文
  • More
  • Cancel
Power management

Power management

Power management forum

  • Mentions
  • Tags
  • More
  • Cancel
  • Ask a new question
  • Ask a new question
  • Cancel
Texas Instruments (TI) Power management support forum is an extensive online knowledge base where millions of technical questions and solutions are available 24/7. You can search power management IC content or ask technical support questions on everything from linear and DC/DC switching regulators to battery management and LED drivers. Find the right solution for your circuit design challenges by using our TI E2E™ support forums that are supported by thousands of contributing TI experts.
Frequent questions
  • [FAQ] Why is there leakage current on pins when the UCD90xxx is not powered up?

    Sam
    Sam
    Other Parts Discussed in Thread: UCD90120A , UCD9090 , UCD90160A , UCD90160 , UCD90240 , UCD90320U , UCD90120 , UCD9090A , UCD90124 , UCD90124A , UCD90320 The UCD90xxx device has an internal ESD diode to protect on all IO pins and MON pins. When the UCD90xxx…
    • over 3 years ago
    • Power management
    • Power management forum
  • [FAQ] Is an RC filter needed for a V33A rail? UCD90xxx

    Sam
    Sam
    Other Parts Discussed in Thread: UCD90120A , UCD9090 , UCD90160A , UCD90160 , UCD90240 , UCD90320U , UCD90120 , UCD9090A , UCD90124 , UCD90124A , UCD90320 V33A supplies power to voltage reference and ADC blocks inside the device. A large ripple on V33A…
    • over 3 years ago
    • Power management
    • Power management forum
  • [FAQ] Are pulldown resistors needed on EN pins? UCD90xxx

    Sam
    Sam
    Other Parts Discussed in Thread: UCD90120A , UCD9090 , UCD90160A , UCD90160 , UCD90240 , UCD90320U , UCD90120 , UCD9090A , UCD90124 , UCD90124A , UCD90320 Pulldown resistors on EN pins are needed in some situations. When the UCD90xxx device is in reset…
    • over 3 years ago
    • Power management
    • Power management forum
  • [FAQ] What are the states of IO pins when the UCD90xxx is under reset? UCD90xxx

    Sam
    Sam
    Other Parts Discussed in Thread: UCD90320U , UCD90320 , UCD90240 , UCD90120A , UCD9090 , UCD90160A , UCD90160 , UCD90120 , UCD9090A , UCD90124 , UCD90124A All IO pins of the UCD90320U, UCD90320, and UCD90240 devices are Hi-Z state. For the rest of the…
    • over 3 years ago
    • Power management
    • Power management forum
  • [FAQ] Are the decoupling capacitors needed on MON pins? UCD90xxx

    Sam
    Sam
    Other Parts Discussed in Thread: UCD90120A , UCD9090 , UCD90160A , UCD90160 , UCD90240 , UCD90320U , UCD90120 , UCD9090A , UCD90124 , UCD90124A , UCD90320 Decoupling capacitors on MON pins are recommended. MON pins are ADC channels. There is no internal…
    • over 3 years ago
    • Power management
    • Power management forum
  • [FAQ] Can the RESET pin be used to sequence off rails? UCD90xxx

    Sam
    Sam
    Other Parts Discussed in Thread: UCD90120A , UCD9090 , UCD90160A , UCD90160 , UCD90240 , UCD90320U , UCD90120 , UCD9090A , UCD90124 , UCD90124A , UCD90320 No. Unlike analog devices, RESET pin of the UCD90xxx resets its digital core abruptly. All GPIO…
    • over 3 years ago
    • Power management
    • Power management forum
  • [FAQ] Is the PMBus connector for the Fusion GUI still required if a PMBus host is already available on the board? UCD90xxx

    Sam
    Sam
    Other Parts Discussed in Thread: UCD90120A , UCD9090 , UCD90160A , UCD90160 , UCD90240 , UCD90320U , UCD90120 , UCD9090A , UCD90124 , UCD90124A , UCD90320 Although it is optional, it is always recommended to have a PMBus connector to connect the Fusion…
    • over 3 years ago
    • Power management
    • Power management forum
  • [FAQ] Are there any application notes for margining function? UCD90xxx

    Sam
    Sam
    Other Parts Discussed in Thread: UCD90120A , UCD9090 , UCD90160A , UCD90160 , UCD90240 , UCD90320U , UCD90120 , UCD9090A , UCD90124 , UCD90124A , UCD90320 Yes. TI has provided the following application notes to design voltage margining: • Design Voltage…
    • over 3 years ago
    • Power management
    • Power management forum
  • [FAQ] When does the UCD90xxx start rail margining?

    Sam
    Sam
    Other Parts Discussed in Thread: UCD90120A , UCD9090 , UCD90160A , UCD90160 , UCD90240 , UCD90320U , UCD90120 , UCD9090A , UCD90124 , UCD90124A , UCD90320 The UCD90xxx only starts the margining when the desired rails reach its POWER_GOOD threshold and…
    • over 3 years ago
    • Power management
    • Power management forum
  • [FAQ] Does the UCD90xxx family support voltage margining?

    Sam
    Sam
    Other Parts Discussed in Thread: UCD90240 , UCD90120A , UCD9090 , UCD90160A , UCD90160 , UCD90320U , UCD90120 , UCD9090A , UCD90124 , UCD90124A , UCD90320 Yes. The UCD90xxx family employs a PWM method to do voltage margining. Compared to the DAC method…
    • over 3 years ago
    • Power management
    • Power management forum
<>

View FAQ threads
  • Tags
  • RSS
  • More
  • Cancel
  • Answered

    BQ2970: Battery protection design not working 0 Locked

    1476 views
    1 reply
    Latest over 5 years ago
    by WM5295
  • Suggested Answer

    LMZM23600: Output voltage too low 0 Locked

    491 views
    9 replies
    Latest over 5 years ago
    by Jimmy Hua
  • Suggested Answer

    BQ21040: when I switched the input to 25V, I broke the BQ21040, When the input voltage is 30V, what is the test condition? 0 Locked

    228 views
    2 replies
    Latest over 5 years ago
    by Nick Brylski
  • Answered

    BQ27421-G1: Fuel Gauge Reading/Writting 0 Locked

    284 views
    3 replies
    Latest over 5 years ago
    by Andy Liu (BMS)
  • Suggested Answer

    TPS3808: About delay time with CT pin @TPS3808 0 Locked

    293 views
    1 reply
    Latest over 5 years ago
    by Michael_DeSando
  • Suggested Answer

    TPS4H160-Q1: Best High Side Switch for 24V/1A 0 Locked

    547 views
    1 reply
    Latest over 5 years ago
    by Anthony P Pham
  • Suggested Answer

    LM3880 0 Locked

    270 views
    1 reply
    Latest over 5 years ago
    by yihe
  • Suggested Answer

    LM3880: LM3880 0 Locked

    271 views
    1 reply
    Latest over 5 years ago
    by yihe
  • Not Answered

    ZU19EG reference design 0 Locked

    178 views
    1 reply
    Latest over 5 years ago
    by LeonardEllis
  • Suggested Answer

    BQ40Z80: Parameter setting : Enable permanent failures PF A . Why does TI technical reference does not recommend Enable any of failure mode( QIM, OTF,COVL,SOT,SOC,SOCC,SOV,SUV) ? Is there an issue with the IC function? 0 Locked

    389 views
    7 replies
    Latest over 5 years ago
    by JDo872
  • Not Answered

    TI Library version details 0 Locked

    225 views
    3 replies
    Latest over 5 years ago
    by Kevin Allen18
  • Answered

    BQ4050: LED Display, Auto Start of FETs, SMB Bus connection 0 Locked

    476 views
    3 replies
    Latest over 5 years ago
    by Andy Liu (BMS)
  • Answered

    LM74670-Q1: Replacement from diode bridge for low voltage (AC24V) input 0 Locked

    413 views
    6 replies
    Latest over 5 years ago
    by Karikalan Selvaraj
  • Suggested Answer

    LM25180: I can't get it to function properly 0 Locked

    1018 views
    4 replies
    Latest over 5 years ago
    by Timothy Hegarty
  • Suggested Answer

    BQ20Z655-R1: Similar new device with exactly the same host communication 0 Locked

    179 views
    1 reply
    Latest over 5 years ago
    by Rushi_Dalal
  • Suggested Answer

    Gate driver for Cuk Converter 0 Locked

    886 views
    4 replies
    Latest over 5 years ago
    by Youhao Xi
  • Suggested Answer

    CCS/LM34936: PD charge fail on 5370 of Dell and Y9000K of Lenovo 0 Locked

    363 views
    8 replies
    Latest over 5 years ago
    by Garrett Roecker
  • Answered

    TPS7A85: Shottky Diode for reverse current protection 0 Locked

    442 views
    3 replies
    Latest over 5 years ago
    by JCHK
  • Answered

    BQ24650: BQ24650RVAT: Maximum Charge Current 0 Locked

    665 views
    10 replies
    Latest over 5 years ago
    by Jeff F
  • Not Answered

    LM5155: parameter design to improve loop stablity 0 Locked

    164 views
    1 reply
    Latest over 5 years ago
    by Garrett Roecker
<>