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Showing 111 results View by: Thread Post Sort by
  • LMR33640: Generate Negative Power Supply from LMR33640

    Seongtaek Cho
    Seongtaek Cho
    Part Number: LMR33640 Hello, I want to generate -12V using the LMR33640. I built a PCB using the attached circuit diagram. U25 is an LMR33640. However, if U25 is installed, a short circuit occurs. Removing U25 works fine. Is there something wrong with…
    • 1 day ago
    • Power management
    • Power management forum
  • LMR33640: EN Pin Voltage Level When Using LMR33640 in Inverting Configuration

    Conor
    Conor
    TI Thinks Resolved
    Part Number: LMR33640 Tool/software: Hi, We are currently designing a negative power supply using the TI LMR33640, and we would like to confirm the appropriate voltage levels for the EN pin when used in an inverting buck-boost configuration. We…
    • 10 months ago
    • Power management
    • Power management forum
  • LMR33640: Design support requirement for LMR33640ADDAR

    Banupriya K
    Banupriya K
    TI Thinks Resolved
    Part Number: LMR33640 Dear Team, This is Banupriya from iWave Systems. We are using the LMR33640ADDAR in our device to generate a fixed 5 V output voltage. And additionally we require the fixed 12 V output voltage (11.4 V is also acceptable) with 12…
    • 10 days ago
    • Power management
    • Power management forum
  • Answered
  • LMR33640: positive to negative 4A..Output...

    Rice,Lee
    Rice,Lee
    Resolved
    Part Number: LMR33640 I've designed a circuit that converts a +8.8V positive voltage supply to a -6.0V negative voltage supply. I have some questions. 1. Is it possible to supply 4A of negative voltage? 2. Are there any issues with the current circuit…
    • Resolved
    • 27 days ago
    • Power management
    • Power management forum
  • Answered
  • LMR33640: Webench power designer issues

    Mark Lawday
    Mark Lawday
    Resolved
    Part Number: LMR33640 Tool/software: Hi, Is anyone else having problems with Webench power designer? If I try to log into my account, to retrieve my saved designs, I'm taken straight back to the 'Create new power design' page. If I try to create…
    • Resolved
    • 8 months ago
    • Simulation, hardware & system design tools
    • Simulation, hardware & system design tools forum
  • LMR33640: Inverting Buck-Boost +12v to -5v

    Stian Blåsberg
    Stian Blåsberg
    TI Thinks Resolved
    Part Number: LMR33640 Tool/software: Hi all, I am trying to recreate the inverting buck-boost converter with the lmr33640 as shown in application note "Working With Inverting Buck-Boost Converters", snva856b. But i am having a hardtime getting no negative…
    • 9 months ago
    • Power management
    • Power management forum
  • Answered
  • LMR33640: Clarification needed on if/when an external schottky diode is needed

    Matt Calvo
    Matt Calvo
    Resolved
    Part Number: LMR33640 Tool/software: Hey Buck Regulator Team, I have a customer working on a new power supply design with the LMR33640 and we were hoping you could help to clear something up. In Section 9.2 depicted below, the Typical Application…
    • Resolved
    • 6 months ago
    • Power management
    • Power management forum
  • Answered
  • LMR33640: +/- Step-down Output with Sepic Design

    User4699
    User4699
    Resolved
    Part Number: LMR33640 Tool/software: Dear Experts Greetings from Istanbul. I need advice abouth my An inverting and non-inverting step-down output design. Due to my limited pcb space and component count I need to get both + and - output from a single…
    • Resolved
    • over 1 year ago
    • Power management
    • Power management forum
  • LMR33640: Fly-Buck Converter with inverting power supply Problem

    User4699
    User4699
    TI Thinks Resolved
    Part Number: LMR33640 Other Parts Discussed in Thread: LMR36520 , Tool/software: Dear Experts, Greetings from Istanbul. I am currently having a problem to my Non-Isolated Buck (Fly-Buck) both inverting and non-inverting Converter My aim is to generate…
    • 8 months ago
    • Power management
    • Power management forum
  • Answered
  • LMR33640: IBB pspice simulation

    Hiroyasu Koike
    Hiroyasu Koike
    Resolved
    Part Number: LMR33640 I downloaded LMR33640D reference design and tried IBB simulation. But the result was different from the attached image. (VOUT was ramped up, not ramped down) Do you know why?
    • Resolved
    • over 1 year ago
    • Power management
    • Power management forum
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