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POWER SUPPLY

Category: Hardware
Product Number: LTC4416
Hello, I would like to find a component which can convert me from 12V (battery voltage) to +5V and -5V with a consumption of 2.25W. 
Thank you for your helps

Regards

 
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  • FormerMember
    0 FormerMember

Hello,

You can use LTPowerCAD to search for ICs that suits your design: LTpowerCAD | Analog Devices

You can also search through the website: Switching Regulators | Analog Devices & Inductorless (Charge Pump) DC/DC Converters | Analog Devices

  • Hi,

    After using one of your link  Switching Regulators | Analog Devices

       

    I can find a component who can suit me 'ADP5074' but I'm not sure about these applications : 

      

    I don't use anything in these recommendations. In my application, I just need to drop a voltage to 5V (or-5V) from a battery voltage of +12V. So I don't know if the link called : Switching Regulators | Analog Devices is fit for my research.   

    Thank you for your more explanation.

    Regards

    Yann DO
     

  • FormerMember
    0 FormerMember in reply to 206_RC

    You should check the charge pump section or find an LDO that will suit your application.

    For the ADP5074, those applications are where it is most used but not limited to it.

    Regards,

    Jhun

  • Reply
    • FormerMember
      0 FormerMember
    in reply to 206_RC

    You should check the charge pump section or find an LDO that will suit your application.

    For the ADP5074, those applications are where it is most used but not limited to it.

    Regards,

    Jhun

    Children in reply to 206_RC

    What you need are two regulators:

    One is a buck/step down regulator which will produce a positive output voltage (12V to 5V).

    Another is an inverting buck boost regulator which will produce the negative output voltage (12V to -5V).

    In order to ease up the design process, you can download LTPowerCAD to help you design the converters you need.

    I suggest you study first what a DC-DC converter is before you start designing.

    However, for ease of design, you can also order a micromodule which is an almost complete design, you would just need some capacitors for the module.

    Familiarize yourself first on the words that are emphasized above.

    Regards,

    Jhun

  • Thank you for your explanations. I'll look closely at the emphasized words.
    Regards

    Yann DO

  • After installing the 'LTPowerCAD' I have a windows (see below). I don't know what is mean 'Frequency Fsw/Max. Height ?'

    And for the type what suits me the most

    And for the optional 

    what should i tick ?

    Thank you for your helps

    Regards

  • FormerMember
    0 FormerMember in reply to 206_RC

    Please read below documentation on the site: LTpowerCAD | Analog Devices

    And as I said, please familiarize yourself first on DC-DC converters. It should be discussed there the concepts including what a switching frequency is. The height should not matter unless you have a connstraint. It just means the maximum height of the device you are required to use.

  • please familiarize yourself first on DC-DC converters

    Yes I understand but I'm trying and I don't see anywhere in LTPowerCAD. How can I select this section DC/DC converter ? it's somewhere other than LTPowerCAD ?

    Thank you for your helps

    Regards

  • The height should not matter unless you have a connstraint.

    No problem but the other parameters Converter Type ? Optional Features ? And how can I access the DC/DC converter tab ?

  • FormerMember
    0 FormerMember in reply to 206_RC

    Monolithic, umodule, and controllers are all used for DC-DC converter applications. It differs on component count, and applications.

    Read the documentation so you'd understand. And be familiar with converters. You won't understand anything there if you're not familiar with dc-dc converters.

  • FormerMember
    0 FormerMember in reply to 206_RC

    You can use the IC below and be familiar with this.

    LTM4655 (Rev. B) (analog.com)

  • LTM4655 (Rev. B) (analog.com)

    Thank you, of course I'll read but how to find this component with search parameters under LTPowerCAD ?