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LM53602: LM53602 EVM questions

Gavin Wang (Zejing)
Expert 3480 points
Part Number: LM53602

1. Can you share the design sequence of common mode choke and differential mode choke for  LM53602 EVM ? 

2. In the EVM ,why you have a bead? what is the benefit? because we often use π type filter.

3. Do you have simplis model for this part?

  • 0
    TI__Expert 4100 points

    Hello Gavin,

    1. I'm not sure what do you mean by this. The part numbers for components used are listed on EVM schematic/BOM
    2. The function of ferrite bead is to improve filtering of high frequency components.
    3. No, we don't have simplis model for this part.

    Bets regards

    Brani

  • 0 in reply to Brani Dubocanin
    TI__Expert 3480 points

    Hi Brani,

    1.  I meant how to calculate the inductance of differential mode choke?  How to choose the common mode choke? 

    2. You can see the bead.  You say" improve filtering of high frequency components".   Can you use the equivalent circuit or formula? 

    2.

  • 0 in reply to Gavin Wang (Zejing)
    TI__Expert 4100 points

    Hi Gavin,

    As far as calculating value for common mode choke is concerned there are number of tools available (from choke manufacturers) online that could be used to determine necessary value. This will depend on several factors, such as current rating, desired attenuation, corner frequency of the filter etc.

    It is also possible to use Webench "Input filter " design tool to get started with EMI input filter design. The input filter design process is highly iterative and will require, in most cases, several attempts to achieve desired performance.

    Best regards

    Brani