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I need a electronic circuts for 2 v dc to 5 volt3 ampere out put

Discussion in 'Power Electronics' started by Docria, Sep 25, 2019.

  1. Docria

    Docria

    10
    0
    Sep 21, 2019
    Hi
    I want a circuts module 2vdc to 5volt dc 3ampere output .which module better ?
     
  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,191
    2,693
    Jan 21, 2010
    What is the input voltage? Are there any other requirements? What are you using it for?
     
  3. Harald Kapp

    Harald Kapp Moderator Moderator

    9,361
    1,900
    Nov 17, 2011
    My guess is the op want a dc/dc converter from 2 V to 5 V.

    @Docria : There is no better or best module without knowing what quality attributes you consider. Some modules may be small, but expensive, others may be inexpensive but big. Other modules again may be very effective but expensive, others my be comparatively ineffective (dissipate more power as waste) but cheap.

    What you are looking for is a step-up dc/dc converter module. USe your favorite search engine to find one that mathces your requirements. If you present your selection here, we may be able to give our opinion on your selection.
     
  4. Docria

    Docria

    10
    0
    Sep 21, 2019
    Thanks for your response
     
  5. Docria

    Docria

    10
    0
    Sep 21, 2019
    2.5 volt to 3 volt 6000 mah. Used for
    Charging battery
     
  6. Alec_t

    Alec_t

    2,691
    712
    Jul 7, 2015
    What is your 2.5V-3V input source? To get 5V at 3A output from a boost converter the source will have to provide about 6A. Can it do that?
     
  7. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,191
    2,693
    Jan 21, 2010
    You need to find a dc-dc boost converter capable of more than 6A. 7.5 to 10A would be best. Note that you'll need to ensure it starts at 2.5V -- some may not.

    If you went to design one, start by looking for a chip that satisfies these requirements (possibly using an external switching element).

    A problem you may face is that a switching MOSFET may require a Vgs higher than 2.5V. a possible solution is a separate boost converter to create the supply rail for your main boost converter.
     
  8. Tha fios agaibh

    Tha fios agaibh

    1,917
    601
    Aug 11, 2014
    Does your load actually need 3 amps?

    Sometimes a device lists input power requirements higher than what is actually needed.
     
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