Non-Isolated DC/DC

Browse by Tags

Non-Isolated DC/DC

Welcome to the Non-Isolated DC/DC Section of the TI E2E Support Community. Ask questions, share knowledge, explore ideas, and help solve problems with fellow engineers. To post a question, click on the forum tab then "New Post".

Sign In to Post
Tags
You have subscribed to this tag. To view or manage your tag subscriptions, click here.   Close
You have unsubscribed from this tag. To view or manage your tag subscriptions, click here.   Close
You are currently viewing:
SEPIC
Related Posts

  • Forum Post: TPS61087: can it be setup as a SEPIC?

    K Ohn
    Can TPS61087 can be setup as a SEPIC? The input voltage range is 3.2V – 5.25V and the output voltage is 5V. The output current would be the maximum current that the switch limit can provide. Have we ever built a SEPIC TPS61087? Thanks! K Ohn
    on Mar 18, 2010

  • Forum Post: Re: TPS61087: can it be setup as a SEPIC?

    Brigitte
    Hello K, Up to now, noone built a SEPIC with TPS61087. In theory this should work very similar to the circuit in the following application report: http://www.ti.com/litv/pdf/slva337 . I wonder if it is necessary to go to a SEPIC configuration. Having a look on the input to output voltage range...
    on Mar 18, 2010

  • Forum Post: Re: TPS40211

    Peter Miller13277
    Chris, The TPS40211 controller does not have any intentional method for forcing the output ripple on the error amplifier output (COMP pin) When you adjusted the crossover frequency, what components did you change? The typical control loop contains 2 capacitors and a resistor between the FB...
    on Oct 6, 2010

  • Forum Post: TPS40211 SEPIC Compensation - Switching Noise on COMP

    Chris Davies
    We have designed a 10 - 20V input 14 V 1A LED driver using the TPS40211 in a SEPIC configuration. Similar to the TI application note. We have found poor stabilisation of the output current, drifting with time and temperature ( 10% variation ). On investigation this has been due to a large component of...
    on Oct 6, 2010

  • Forum Post: TPS43000 instability

    Calum Mackinnon
    I am evaluating the TPS43000 as a Sepic targeting an input range between 2 and 9 Vin, for a 4 or 5 V output with a max output around 1.5W. I created a custom test board based on the Sepic on the spec and I have problems of high input current and stability issues when the PFET is installed. Works...
    on Apr 11, 2011

  • Forum Post: Re: TPS40210 boost VIN=5V to Vout=12.6V @ 3A output current application

    Na Kong
    Hi Joseph, There are some reference designs using TPS40210 in a SEPIC converter. You may find them on the TPS40210's webpage. The following is one of the examples. http://www.ti.com/tool/pmp5910 There should be no difference with other topologies for loop measurement. In the above example...
    on Nov 10, 2011

  • Forum Post: Designing a TPS63061-based regulator (Vin = 2.5-12v, Vout = 5v/1.5A)

    Michael H
    Hi, I'm trying to design a switch mode regulator with the new TI TPS63061 buck-boost SEPIC IC. My circuit will have a Vin range of 2.5-12v (1-3 cell LiPo), which should be regulated to 5v, with a max current draw of 1.5A. Does the TPS63061 seem like a good solution? I've looked at the datasheet...
    on Feb 18, 2012

  • Forum Post: Re: TPS40210 for SEPIC from 9-30Vin to 12.5Vout at 6A

    Na Kong
    Hi Danilo, Here is the reference design of SEPIC converter for 19V output with 4.7A using TPS40210. There are more reference designes which you can find at TPS40210's website. http://www.ti.com/tool/pmp5064 Regards, Na
    on Mar 6, 2012

  • Forum Post: LM3481 - SEPIC output inductor value

    Scott Phillips
    I have a question related to how WEBENCH calculates the inductance value for Lout in a LM3481 SEPIC topology design. My design parameters are as follows: Vin = 10 to 32V Vout = 20V Iout = 1.6A Freq = 300kHz For an uncoupled SEPIC design, WEBENCH calculates the following: Lin = 22uH Lout = 120uH...
    on Mar 14, 2012

  • Forum Post: Re: BUCK-BOOST

    Chris Glaser
    The new TPS63060 is very close and is simple. The TPS43000 also almost meets your requirements. A solution that meets your requirements as stated would likely need a dedicated boost converter running off the input to act as a bias supply to another boost converter, TPS61175 for example, configured...
    on Mar 26, 2012

  • Forum Post: LM3481 Sepic Circuit, Spikes on Vout

    Christian Popp
    Dear all, I'm developing a SEPIC converter based on the LM3481 controller. The parameters should be: Vin = 4...40V, Vout = 12V, Iout,max = 2A. I used the Webench tool to calculate the part-values. The calculated values for Lin and Lout are 6.8uH and 47uH, but I want to use a coupled Inductor, so...
    on May 10, 2012

  • Forum Post: RE: TPS61170 in SEPIC

    Jeff F
    Regarding 1, unfortunately SEPIC designs are not scheduled to be included in WeBench for a few more months. However, there are app notes ( http://www.ti.com/litv/pdf/slva337 and http://www.ti.com/litv/pdf/slyt309 ) and a TPS61170EVM-316 SEPIC EVM that might help. Regarding 2, no. However, you might...
    on May 29, 2012

  • Forum Post: RE: TPS40210; SEPIC; IN:5-30V; OUT: 12V/0.5A

    Anthony Fagnani
    Hi Martin, After taking a look I have a couple questions and thoughts on what you can try. There aren't any design examples with the TPS40210 at the moment but you can try looking through SLVA516a for the TPS55340. This can help you select your input capacitor, inductor (coupled only), ac capacitor...
    on Sep 20, 2012

  • Forum Post: Low-Frequency Noise at SEPIC Output (using LM3478)

    Thomas Gay
    Hello My design comprises a SEPIC stage with 4V5-20V input range and 13.5V output at max. 1A. In most cases the load is significantly lighter, coming down to a 0.5W minimum instead of 13.5W. In these conditions there is a strange regulation behaviour seen for higher input voltages. Everything is...
    on Mar 12, 2012

  • Forum Post: TPS61130 Vbat input current

    Philip Walker
    The absolute maximum rating for the SWN input is 12V while for the Vbat input it is 7V. In the datasheet these are shown as connected together. What current does the Vbat terminal take for normal operation? I would like to know this to design a circuit limit the voltage on Vbat if there is a transient...
    on Oct 10, 2012

  • Forum Post: LM3478 SEPIC doesn't work as expected on the whole range

    Laurent Guillier
    Hello, I have designed a SEPIC with LM3478, with the following specs : Vin : 8V .. 19V Vout : 12V Imax : 6A The design is a mix between Webench (see webench_design_744428_44.pdf) (Please visit the site to view this file) and my own calculus from AN1484 and LM3478 datasheet. The final schematics...
    on Sep 26, 2012

  • Forum Post: RE: LM3481 or LM5022 for SEPIC ?

    Kevin Weng
    Hi, Giuseppe, Thank you so much for your information. I saw a document in TI about using SEPIC topology for 12V/4A output. and its sepic capacitors are approx. 10uF/50V (4.7uF * 2). what do you think how many capacitance of sepic capacitors need use in my application ? (there're few information...
    on Dec 7, 2012

  • Forum Post: LM3481 or LM5022 for SEPIC ?

    Kevin Weng
    I need a DC/DC converter, the input voltage is 18 ~ 36 Vdc, and output voltage is 24Vdc / 3A(avg) ~ 5A (pk). I choose the SEPIC topology, and search TI product, I found 2 ic: LM3481 and LM5022, it seems could use in my requirement. but I don't know what is the best solution for it ? May someone...
    on Dec 7, 2012

  • Forum Post: LM5022 - Help with SEPIC Control Loop Compensation requested.

    Paul Jukes
    Hi. I am attempting to design a SEPIC converter using a LM5022. Unfortunately I have not been able to find any examples (or tools) that will assist me in designing the Control Loop Compensation. The Webench does not appear to provide a SEPIC topology for the LM5022, and the data sheet contains a Boost...
    on Feb 15, 2013

  • Forum Post: TPS61131 SEPIC output problem

    Luis Maduro
    I'm using the TPS61131 in one of my designs and a I have a problem. I have the LDO running correctly and I have the 3.3V on the output as I want. But, in the sepic output I only have an output voltage of ~1.6V and with no load on the output of the sepic I have a constant ~160mA drawn of the source...
    on Mar 6, 2013

  • Forum Post: TPS40210 -SEPIC PMP5910

    David Escandon
    TI Team, Can I get the design files for the PMP5910 SEPIC circuit? Thank you. -David
    on Apr 18, 2013

  • Forum Post: RE: TPS25118 or TPS5118 for SEPIC

    Tsukui Yusuke
    Hi, When can I have your response? Best Regards, yusuke
    on May 7, 2013

  • Forum Post: Problem with LM3478 in SEPIC configuration in low voltages

    Grazyna Murciadis
    Hi, I have designed a SEPIC converter using the LM3478 with the following requirements: Input Voltage : 3.1VDC - 16 VDC Output Voltage : 5.3 VDC Maximum Output Current: 1.1 A I'm using uncoupled L1 and L2. However I have a problem with current I can draw from the circuit especially...
    on May 4, 2013

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.

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