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WEBENCH® Tools/LM2621: lm2621

Ranveersinh jadav
Prodigy 70 points
Part Number: LM2621
Other Parts Discussed in Thread: TINA-TI, LM2623, TPS61093, TPS61041

Tool/software: WEBENCH® Design Tools

Hello,

I am not getting LM2621 in Tina-Ti software component list. How to get .lib file or schematic file for simulation in Tina-Ti software?

Can you help me out for this ? 

  • 0
    TI__Mastermind 34201 points

    Hi Ranveersinh,

    I'm afraid there is no TINA or Spice Model available for LM2621 because this is a really old device.

    You can choose other Boost Converters here: http://www.ti.com/power-management/non-isolated-dc-dc-switching-regulators/step-up-boost/boost-converters-integrated-switch/products.html

  • 0 in reply to Zack Liu
    Prodigy 70 points

    Hello,

    Thank you for your answer.

    How to open step model(.stp ) file  or cad file in Tina-ti Simulator to check silulation? Why this TI circuit not available in Tina-ti Simulator directly? How can or where can I  simulate (LM2621 or LM2623). Can you guide me for that.

    CAD File (.bxl)STEP Model (.stp)

    Regards,

    Ranveersinh jadav

  • 0 in reply to Ranveersinh jadav
    TI__Mastermind 34201 points

    Hi Jadav,

    Not all TI device has TINA simulation models. The cad file is not for simulation.

    If you hope to simulate the boost converter in TINA, you can select another one TI boost converter. Or tell me the Vin range, Vout, Iout specifications so that I can help you find a suitable one.

  • 0 in reply to Zack Liu
    Prodigy 70 points

    Hello,

    Thank you for your response.

    My Vin is around 1.8v DC pulsating with 10 MAmp. So I want to convert around Vout 10v  . So range (Around  Vin: 1.6v to 4 ) , And I need Vou around 10v. ANd Current as music I can increase around 100mAmp if possible. Your suggestions also welcome.

    Vin:1.6 to 4

    Vout : 10v

    Iout: 50-100Mamp

  • 0 in reply to Ranveersinh jadav
    TI__Mastermind 34201 points

    Hi Jadav,

    TPS61093 is possible to support your application. And you could simulate the circuit with WEBENCH and TINA.

    Hope that helps.

  • 0 in reply to Zack Liu
    Prodigy 70 points

    Hello Mr. Zack Liu,

    Thank you very much for your suggestion and continue response. I will look it.

    Thanks and regards,

    Ranveer

  • 0 in reply to Zack Liu
    Prodigy 70 points

    Hello,

    I am working on Tps61093 Ic. I have a question about performance.

    Like I am getting 2v dc pulsating with low 10 milliamps ( 1 pulse within 8-10 pulses: duty cycle-around 10%-low power) from the energy source.  So is it IC still able to convert and boost dc volt up to 10v with the current and work well with these requirements. And it will give constant voltage or in pulse with a low duty cycle as input. Can you give hint on it?. A little hard for me to understand all technical data on the datasheet. 

    Thank you in advance.

    Regards,

    Ranveer

  • 0 in reply to Ranveersinh jadav
    TI__Mastermind 34201 points

    Hi Ranveer,

    Do you mean the input voltage is not a constant voltage between 1.6V and 4V? It's a 10% duty cycle pulsating voltage source?

    Could you draw some system block diagram to help me understand your application well?

  • 0 in reply to Zack Liu
    Prodigy 70 points

    Hello. 

    I am getting one pulse of 2v dc with 10 milliamps (positive only)Energy Source.pdf every 8-10 second (like every 8-10 second get low power energy from source), I want to boost this low power to high power and then store it. I attached here my handouts for reference (no fix). So this pulsating voltage comes in output from boost converter also pulse or content?  (refer pdf also hand diagram and calculation power)

    Thank you in advance.

  • 0 in reply to Ranveersinh jadav
    TI__Mastermind 34201 points

    Hi Ranveer,

    This is quite difficult because the input source is a pulsating voltage and has limiting current of only 10 miliamps. 

    For boost converter TPS61093, it could start up from 2V input voltage and output 10V. But I'm worried the 10 miliamps current is not big enough to let TPS61093 starts up.

    Even TPS61093 could start up, during the 8-10 seconds that the source has no power, what's the load current of 10V? 

  • 0 in reply to Zack Liu
    Prodigy 70 points

    Hello,

    Thank you for your answer.

    Yes, I have less current around 0 to 15-20 milliamp as Source. Could you suggest any other better Voltage boost Ic Which able to work and boost in low current also ( 0-2vdc voltage with 15 mAmp low current ) to a higher voltage around 5-10 v and I = ...mAmp?  

    Thanks and regards

    Ranveer

  • 0 in reply to Ranveersinh jadav
    TI__Mastermind 34201 points

    Hi Ranveer,

    That's not easy to select a boost converter for your application because the source current is less than 20 miliamps. Typically the boost converter needs higher startup input current so that the output voltage can be regulated to desired voltage. So I'm thinking you have to put a bulk aluminum electrolytic capacitor at input to store energy. When the aluminum electrolytic capacitor voltage is charged higher than boost converter UVLO and boost converter could regulate the output voltage to 10V.

    TPS61041, TPS61093 may fit for you application. Please take a look at it.