• Join
  • Sign In with my.TI Login
Texas Instruments
  • Products
  • Applications
  • Tools & Software
  • Support & Community
  • Sample & Buy
  • About TI
Sample & Purchase Cart Sample & Purchase Cart
  • Search
  • Advanced
TI E2E™ Community
  • Support Forums
  • Blogs
  • Groups
  • Videos
  • 简体中文
  • More ...
TI Home » TI E2E Community » Support Forums » Power Management » /etc... Power » /etc... Power Forum » DC/DC converter
Share
/etc... Power
  • Forum
  • E2E Wiki
Options
  • Subscribe via RSS

Forums

DC/DC converter

This question is answered
Eduardo Melara
Posted by Eduardo Melara
on Feb 27 2012 13:16 PM
Prodigy125 points

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?

DC/DC converter modular discrete
Report Abuse
  • Reply
You have posted to a forum that requires a moderator to approve posts before they are publicly available.
All Replies
  • Chris Glaser
    Posted by Chris Glaser
    on Feb 27 2012 15:38 PM
    Guru59025 points

    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.

    Report Abuse
    • Reply
    You have posted to a forum that requires a moderator to approve posts before they are publicly available.
  • Eduardo Melara
    Posted by Eduardo Melara
    on Feb 28 2012 05:25 AM
    Prodigy125 points

    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

    Report Abuse
    • Reply
    You have posted to a forum that requires a moderator to approve posts before they are publicly available.
  • CWilson
    Posted by CWilson
    on Feb 28 2012 06:13 AM
    Expert1730 points

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

    Report Abuse
    • Reply
    You have posted to a forum that requires a moderator to approve posts before they are publicly available.
  • Eduardo Melara
    Posted by Eduardo Melara
    on Feb 28 2012 06:24 AM
    Prodigy125 points

    input voltage 5v

    Its a DC/DC converter

    Report Abuse
    • Reply
    You have posted to a forum that requires a moderator to approve posts before they are publicly available.
  • CWilson
    Posted by CWilson
    on Feb 28 2012 07:58 AM
    Expert1730 points

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

    Report Abuse
    • Reply
    You have posted to a forum that requires a moderator to approve posts before they are publicly available.
  • Eduardo Melara
    Posted by Eduardo Melara
    on Feb 28 2012 08:04 AM
    Prodigy125 points

    From 5w to 20w for each converter

    Report Abuse
    • Reply
    You have posted to a forum that requires a moderator to approve posts before they are publicly available.
  • CWilson
    Posted by CWilson
    on Feb 28 2012 08:07 AM
    Expert1730 points

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

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

    Report Abuse
    • Reply
    You have posted to a forum that requires a moderator to approve posts before they are publicly available.
  • Eduardo Melara
    Posted by Eduardo Melara
    on Feb 28 2012 08:21 AM
    Prodigy125 points

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

    Report Abuse
    • Reply
    You have posted to a forum that requires a moderator to approve posts before they are publicly available.
  • Chris Glaser
    Posted by Chris Glaser
    on Feb 28 2012 08:46 AM
    Verified Answer
    Verified by Chris Glaser
    Guru59025 points

    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.

    Report Abuse
    • Reply
    You have posted to a forum that requires a moderator to approve posts before they are publicly available.
  • CWilson
    Posted by CWilson
    on Feb 28 2012 09:02 AM
    Expert1730 points

    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 

    ??? ??? ???

    Report Abuse
    • Reply
    You have posted to a forum that requires a moderator to approve posts before they are publicly available.
  • Eduardo Melara
    Posted by Eduardo Melara
    on Feb 29 2012 05:29 AM
    Prodigy125 points

    Thanks Chris Glaser.

    Report Abuse
    • Reply
    You have posted to a forum that requires a moderator to approve posts before they are publicly available.
TI E2E™ Community
  • Support Forums
  • Blogs
  • Videos
  • Groups
  • Site Support & Feedback
  • Settings
TI E2E™ Community Groups
  • TI University Program
  • Make the Switch
  • Microcontroller Projects
  • Motor Drive & Control
Other Communities
  • Deyisupport
  • Designsomething.org
  • beagleboard.org
  • TI on Element 14
  • TI on TechXchangeSM
Other Technical & Support Resources
  • WEBENCH® Design Center
  • Product Information Centers
  • Technical Documents
  • TI Design Network
  • TI Technical Articles
  • TI Training

All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.

Content on this site may contain or be subject to specific guidelines or limitations on use. All postings and use of the content on this site are subject to the Terms of Use of the site; third parties using this content agree to abide by any limitations or guidelines and to comply with the Terms of Use of this site. TI, its suppliers and providers of content reserve the right to make corrections, deletions, modifications, enhancements, improvements and other changes to the content and materials, its products, programs and services at any time or to move or discontinue any content, products, programs, or services without notice.

Follow Us Texas Instruments on Facebook Texas Instruments on Twitter Texas Instruments on LinkedIn Texas Instruments on Google+
TI Worldwide | Contact Us | my.TI Login | Site Map | Corporate Citizenship | mobile m.ti.com (Mobile Version)

TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs and
embedded processors, along with software, tools and the industry’s largest sales/support staff.

© Copyright 1995-2013 Texas Instruments Incorporated. All rights reserved.
Trademarks | Privacy Policy | Terms of Use