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LDC1612: Use WEBENCH to design LDC1612 PCB coil,how to set parameters ?

bo cheng
Prodigy 10 points
Part Number: LDC1612

In 2018, I designed a product that uses ldc1612 to measure metal distance. At that time, PCB coil was designed by WEBENCH of TI company. When I set several parameters, WEBENCH generated the PCB layout file of the inductance coil. These parameters are the maximum measurement distance, relative accuracy, number of PCB layers, etc., which are intuitive and convenient. Now I can't find this page on Ti website. Now I can't improve the PCB coil of the product I designed three years ago, because in the current parameter setting of WEBENCH coil design, I can't understand the meaning of several parameters set in PCB coil design. I don't understand the relationship between these parameters and my design, but the parameters three years ago were completely different. At that time, I knew these parameters very well. Now I can't improve my product parameters.

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  • 0
    TI__Mastermind 34665 points

    Bo,

    Thank you for your inquiry and your continuing interest in TI products.

    The earlier on-line tool has been replaced by an Excel-based tool you can download from here.
    The Excel tool is also available from the product pages of any of our LDC devices.

    Please download the tool, give it a try, and let me know if you have any questions.

    Regards,
    John

  • 0
    Prodigy 10 points

    Hi Bo,

    The original Webench tool had a fixed set of sensors and picked the optimum from that set. The newer version of Webench works like the spreadsheet tool and calculates the best sensor that fits the constraints you enter. There's a walkthrough on how to use the LDC tool online at: https://e2e.ti.com/blogs_/b/analogwire/posts/how-you-can-use-the-ldc-racetrack-inductor-designer-tool.

    The main things you should care about are the sensor diameter, number of turns, and number of layers. You'll want to use the minimum turn spacing that the PCB manufacturer can achieve.

  • 0
    Prodigy 10 points

    Dear  John Miller - Sensing


    Can I use the earlier on-line tool? Please tell me, please provide me with a way to use the old version of the tool.please! please! please! 

    The new one Excel-based tool is so difficult for me , so many parameters irrelevant to me.For an application engineer, the experience of using your new  Excel-based tool is too bad. Our attention should be focused on many problems of the product in the use site. We don't have time and energy to study all kinds of cumbersome and application independent parameters of a certain chip of your company. If it is simple and convenient to use, users do not need to spend too much energy on learning, and customers will use your company's chip in the application, If it cannot be used or is too difficult to use, we will look for products from other companies or find other ways to solve our application problems.

    What I can't understand is why the tool given to me four years ago is so simple and convenient. When I have designed the product and put it into the market, Now I have to modify the parameters. Suddenly, I find that the simple and convenient online tool doesn't exist. Instead, it is replaced by a tool with many times the trouble. Our tiny company doesn't have such strong technical ability!

  • 0 in reply to bo cheng
    TI__Mastermind 34665 points

    Bo,

    I am very sorry to say the previous version of the on-line tool is no longer available.
    As you pointed out, a revised version of that tool is available here, but it is no longer being updated or revised, and has very little support beyond making it available.

    The reason the original on-line tool was discontinued was that it was very difficult for the WEBENCH team to support and update the online tool.
    So we started offering and supporting the spreadsheet that was mentioned earlier in this post.
    The spreadsheet has the additional advantage of offering recommended device settings.

    As Chris pointed out in his reply, guidance on using the spreadsheet coil design tool can be found here.

    Please let me know if you have any questions.

    Regards,
    John