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Showing 127 results View by: Thread Post Sort by
    Answered
  • LMR33640: LMR33640 Inverting Buck-Boost: IC Fails at 0.3A Load, FB Pin Drops to 0V

    Shreya  Hiremath
    Shreya Hiremath
    Resolved
    Part Number: LMR33640 Hi Team, I am using the LMR33640 in an inverting buck boost configuration (as per datasheet reference design). Design Details: Input Voltage: 10V DC Output Voltage: -5V DC Target Output Current: up to 1A Inductor: 10uH, 5A…
    • Resolved
    • 3 months ago
    • Power management
    • Power management forum
  • LMR33640: Generate Negative Power Supply from LMR33640

    Seongtaek Cho
    Seongtaek Cho
    TI Thinks Resolved
    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…
    • 7 months ago
    • Power management
    • Power management forum
  • LMR33640: Clarification on Output Voltage Behavior – LMR33640ADDAR

    Banupriya K
    Banupriya K
    Part Number: LMR33640 Dear Team, We are using the LMR33640ADDAR part in our device with a recommended output voltage of 12 V. Could you please clarify the expected output behavior if the input supply is reduced to 9 V? Specifically, we would like to…
    • 4 months ago
    • Power management
    • Power management forum
  • LMR33640: Generating -40V from a positive voltage input

    Alberte Garcia
    Alberte Garcia
    TI Thinks Resolved
    Part Number: LMR33640 Other Parts Discussed in Thread: LMR38010 , LMR38020 Hello, we are currently designing the power for a board where we need to generate -40V from a positive voltage. The current consumption will be around 30-40 mA. Ideally, we would…
    • 2 months ago
    • Power management
    • Power management forum
  • LMR33640EVM: Could you please provide the design files for the LMR33640 demo board?

    YM S
    YM S
    TI Thinks Resolved
    Part Number: LMR33640EVM Other Parts Discussed in Thread: LMR33640 Could you please provide the design files for the LMR33640 demo board? Thank you!
    • 18 days 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…
    • over 1 year 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…
    • 8 months 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
    • 8 months ago
    • Power management
    • Power management forum
  • LMR33640: I entered a request for LMR33640DDDAR for a quantity of 222 units, the system rounded the quantity to a standard pack (SPQ)

    Eran Hass
    Eran Hass
    TI Thinks Resolved
    Part Number: LMR33640 Hello Support, How are you? I placed a request for LMR33640DDDAR for a quantity of 222 units, the system rounded the quantity to a standard package (SPQ) This is intentional behavior by TI, TI does not sell partial quantities — it…
    • 1 day ago
    • API solutions
    • API solutions 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
    • over 1 year ago
    • Simulation, hardware & system design tools
    • Simulation, hardware & system design tools forum
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