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DC/DC converter

I'm working on a power supply project. I have some doubts about the architectures, the advantages and disadvantages of a modular conversor and discrete conversor . What should I consider?

  • What type of power supply are you designing?  Do you have some specifications that your design needs to meet?  This will determine what is the best route to go.

    We have a power quick search at power.ti.com that will help you find the right solution.  It returns both integrated power solutions as well as discrete converters.

    Chris Glaser

    Texas Instruments

    ________________________________

    Find answers to common questions in the LPDC App Note Index

     

  • In reply to Chris Glaser:

    I am designing a power supply to a processing board. The converter needs to step down 5V/28W.. It can be a non-isolated converter.

    We are in doubt whether we use a modular or discrete converter. The machine must support military standards.

    Can you tell me the advantages and disadvantages of each solution?  We need to know wich design is better to military aplications.

    Thanks

  • In reply to Eduardo Melara:

    What is the input voltage? Is it DC or AC? Line frequency?

  • In reply to CWilson:

    input voltage 5v

    Its a DC/DC converter

  • In reply to Eduardo Melara:

    What is your output voltage?
    Output power = 28W. 

  • In reply to CWilson:

    From 5w to 20w for each converter

  • In reply to Eduardo Melara:

    Sorry, that doesn't make sense. Please fill in:

    Input voltage [V]:
    Output voltage [V]: 
    Output power [W]: 

  • In reply to CWilson:

    Input voltage [V]: 5v
    Output voltage [V]: 3.3v
    Output power [W]:  10w

  • In reply to Eduardo Melara:

    The power quick search returns a lot of results for this standard configuration.  I would highlight the TPS54318 and TPS84620 as a discrete solution and a modular solution that fill your requirements.

    Modular solutions are simpler and easier to design.  This is good if you have limited design resources or a limited design time.  A discrete solution requires carefully following the datasheet's design equations and making a good layout.  This is more difficult for non-power supply engineers and can be done incorrectly.

    I encourage you to look through the various devices that the power quick search returns and see which meet your exact application requirements.

    Chris Glaser

    Texas Instruments

    ________________________________

    Find answers to common questions in the LPDC App Note Index

     

  • In reply to Eduardo Melara:

    Eduardo Melara

    From 5w to 20w for each converter

    Do you then mean:

    Input voltage:

    From 5V to 20V
    Output voltage: 3.3V
    Output power: 10W 

    ??? ??? ???

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