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About LM2588 DC-DC CONVERTER

SATISH JAISWAL
Prodigy 170 points
Other Parts Discussed in Thread: LM2588

Hello everyone,

I am using LM2588 adj IC for boosting 12V to 60V. In the circuit, when i give power, it is not boosting. it only show zero at input and output.

I want to ask whether the design which TI design tool give, work or not????????????/

thanks

Satish Jaiswal

M.Tech IIT DELHI

  • 0 in reply to SATISH JAISWAL
    TI__Intellectual 980 points

    Hi Satish,

    The attached report shows a design for LM2588 with Vin=12V, Vout=60V, and Iout=0.36A.  Please let us know if you need further assistance.

    Regards,

    LaRita Gwie

    5164.LM2588_12V_60V_360mA.pdf

  • 0
    Prodigy 170 points
    Ma'm, If I want to simulate this circuit, how i can do it?

    Click to show quoted text
    On Tue, Jan 29, 2013 at 10:23 AM, Satish Jaiswal <satishgcet@gmail.com> wrote:
    Plz provide me design as early as possible because my work is in pending.

    On Tue, Jan 29, 2013 at 10:21 AM, Satish Jaiswal <satishgcet@gmail.com> wrote:
    hello,I want current of 360 mA.

    On Tue, Jan 29, 2013 at 4:49 AM, LaRita Gwie - WEBENCH Design Center <bounce-15731@e2e.ti.com> wrote:

    Hi Satish,

    What output current do you need?  For LM2588 with Vin=12V, Vout=60V, and Iout=0.5A, I was able to get the following design and simulation.

    Regards,

    LaRita Gwie

  • 0 in reply to SATISH JAISWAL
    TI__Intellectual 980 points

    Hi Satish,

    1.  Go to the main TI website (www.ti.com) and input your power supply requirements in the WEBENCH® form on the bottom right.  Then, click start design for a single output.

     2.  Select  LM2588 from the list of TI devices that meet your requirements.

    3.  Click the “Sim” button at the top of your design.

    4.  Choose the type of simulation you want and click “Start New Simulation”.

    5.  Once the simulation has run, you can click on “Waveform Controls” to Add/Remove waveforms.

    Please let us know if you need further assistance.

    Regards,

    LaRita Gwie

  • 0
    Prodigy 170 points
    thank you ma'm.......

    Click to show quoted text
    On Tue, Jan 29, 2013 at 11:38 AM, Satish Jaiswal <satishgcet@gmail.com> wrote:
    Ma'm, If I want to simulate this circuit, how i can do it?

    On Tue, Jan 29, 2013 at 10:23 AM, Satish Jaiswal <satishgcet@gmail.com> wrote:
    Plz provide me design as early as possible because my work is in pending.

    On Tue, Jan 29, 2013 at 10:21 AM, Satish Jaiswal <satishgcet@gmail.com> wrote:
    hello,I want current of 360 mA.

    On Tue, Jan 29, 2013 at 4:49 AM, LaRita Gwie - WEBENCH Design Center <bounce-15731@e2e.ti.com> wrote:

    Hi Satish,

    What output current do you need?  For LM2588 with Vin=12V, Vout=60V, and Iout=0.5A, I was able to get the following design and simulation.

    Regards,

    LaRita Gwie

  • 0
    Prodigy 170 points
    Ma'm when i give the input of 12V, at the input of LM2588 IC, I get the input of 12 v but at the o/p, I can not get the o/p of 60V. I see that the IC become very hot. What is the problem?
    Plz tell me.

    thanking you

    Click to show quoted text
    On Tue, Jan 29, 2013 at 10:41 PM, SAT

    On Tue, Jan, 2013 at 11:38 AM, Satish Jaiswal <satishgcet@gmail.com> wrote:
    Ma'm, If I want to simulate this circuit, how i can do it?

    On Tue, Jan 29, 2013 at 10:23 AM, Satish Jaiswal <satishgcet@gmail.com> wrote:
    Plz provide me design as early as possible because my work is in pending.

    On Tue, Jan 29, 2013 at 10:21 AM, Satish Jaiswal <satishgcet@gmail.com> wrote:
    hello,I want current of 360 mA.

    On Tue, Jan 29, 2013 at 4:49 AM, LaRita Gwie - WEBENCH Design Center <bounce-15731@e2e.ti.com> wrote:

    Hi Satish,

    What output current do you need?  For LM2588 with Vin=12V, Vout=60V, and Iout=0.5A, I was able to get the following design and simulation.

    Regards,

    LaRita Gwie

  • 0 in reply to SATISH JAISWAL
    TI__Intellectual 980 points

    Hi Satish,

    When you say you can't get an output of 60V, is that within the WEBENCH(r) tool, a different simulator, or on a test board?  If it is on a test board, be sure you have the input supply current-limited.

    Regards,

    LaRita Gwie

  • 0
    Prodigy 170 points
    hello Ma'm,

     Its mean I have to use load at the output. yesterday evening, when I re-test the circuit, I have got the same output as I given at the input and IC became hot.
     What can be the problem????????

    Click to show quoted text
    On Tue, Jan 29, 2013 at 10:39 PM, Satish Jaiswal <satishgcet@gmail.com> wrote:
    thank you ma'm.......


    On Tue, Jan 29, 2013 at 11:38 AM, Satish Jaiswal <satishgcet@gmail.com> wrote:
    Ma'm, If I want to simulate this circuit, how i can do it?

    On Tue, Jan 29, 2013 at 10:23 AM, Satish Jaiswal <satishgcet@gmail.com> wrote:
    Plz provide me design as early as possible because my work is in pending.

    On Tue, Jan 29, 2013 at 10:21 AM, Satish Jaiswal <satishgcet@gmail.com> wrote:
    hello,I want current of 360 mA.

    On Tue, Jan 29, 2013 at 4:49 AM, LaRita Gwie - WEBENCH Design Center <bounce-15731@e2e.ti.com> wrote:

    Hi Satish,

    What output current do you need?  For LM2588 with Vin=12V, Vout=60V, and Iout=0.5A, I was able to get the following design and simulation.

    Regards,

    LaRita Gwie

  • 0 in reply to SATISH JAISWAL
    TI__Intellectual 2930 points

    Hi Satish,

    I will need more information to know what is wrong.

    Could you post your design schematic and layout? (if you don't want to post them I can provide my email address).

    In the mean time, please make sure all connections are properly soldered on your board. I noticed in WEBENCH the design calls for a Heatsink, please make sure you have one attached to the IC or else it will overheat.
    Can you probe the SW node on the IC and tell if it is switching?

    Best Regards,

    Tommy Jewell

  • 0
    Prodigy 170 points
    hello sir ,

          I am mailing you design schematic and layout of 12V to 58V, 0.360 A. In this design, when i give the input of 12V then at output, I can not get 60V o/p. when I give supply of 12V, then at i/p, it become 5 V and at o/p, variable o/p like 22V or 15V are coming. and IC had become damage.
    Plz give me guidance as early as possible.


    Thank you
    SATISH JAISWAL
    M.TECH(IIT DELHI)

    Click to show quoted text
    On Fri, Feb 1, 2013 at 7:01 AM, Tommy Jewell - WEBENCH Design Center <bounce-1884216@e2e.ti.com> wrote:

    Hi Satish,

    I will need more information to know what is wrong.

    Could you post your design schematic and layout? (if you don't want to post them I can provide my email address).

    In the mean time, please make sure all connections are properly soldered on your board. I noticed in WEBENCH the design calls for a Heatsink, please make sure you have one attached to the IC or else it will overheat.
    Can you probe the SW node on the IC and tell if it is switching?

    Best Regards,

    Tommy Jewell

  • 0
    Prodigy 170 points


    Click to show quoted text
    hello sir ,

          I am mailing you design schematic and layout of 12V to 58V, 0.360 A. In this design, when i give the input of 12V then at output, I can not get 60V o/p. when I give supply of 12V, then at i/p, it become 5 V and at o/p, variable o/p like 22V or 15V are coming. and IC had become damage.
    Plz give me guidance as early as possible.


    Thank you
    SATISH JAISWAL
    M.TECH(IIT DELHI)





  • 0 in reply to SATISH JAISWAL
    TI__Intellectual 2930 points

    Hi Satish,

    It can be extremely hard to get a supply working properly on a bread board. The parasitics from the component leads and layout will introduce much greater inefficiencies  in the system. Specifically the extra inductance in the lines can cause large ringing in the paths that are high current. It is very possible that ringing on the switch node from this is causing damage to the IC.

    You can start by trying to tighten up what you have and see if that fixes anything. The link below is an app note that has some basic guidelines for layout:

    http://www.ti.com/lit/an/snva021b/snva021b.pdf

    If you cant get it working on the bread board, you may need to switch to a PCB board.
    Digikey (www.digikey.com) holds an already made board we designed that should be able to do most designs with this part:
    Digikey Partnumber: 551011367-051-ND

    Best regards,
    Tommy Jewell 

  • 0
    Prodigy 170 points
    Hello Sir/ Madam,
          when I apply the i/p of 12 V, it shows short circuit. Can u tell me why this is telling. I have made the circuit on the general purpose PCB. I have given a load of 100 ohm, 20W.

    Click to show quoted text
    On Wed, Feb 13, 2013 at 5:44 AM, Tommy Jewell - WEBENCH Design Center <bounce-1884216@e2e.ti.com> wrote:

    Hi Satish,

     can be extremely hard to get a supply working properly on a bread board. The parasitics from the component leads and layout will introduce much greater inefficiencies  in the system. Specifically the extra inductance in the lines can cause large ringing in the paths that are high current. It is very possible that ringing on the switch node from this is causing damage to the IC.

    You can start by trying to tighten up what you have and see if that fixes anything. The link below is an app note that has some basic guidelines for layout:

    http://www.ti.com/lit/an/snva021b/snva021b.pdf

    If you cant get it working on the bread board, you may need to switch to a PCB board.
    Digikey (www.digikey.com) holds an already made board we designed that should be able to do most designs with this part:
    Digikey Partnumber: 551011367-051-ND

    Best regards,
    Tommy Jewell 

  • 0 in reply to SATISH JAISWAL
    TI__Intellectual 2930 points

    Hi Satish,

    If the IC was broken the switch may be shorted to ground at which you will see a full short to ground. If this is the case you should try a new IC.

    If the part is simply not switching, please check all your connections and make sure everything is in place.

    Best regards,

    Tommy