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  • TI Thinks Resolved

ISO1050: How the galvanic isolation is actually created? Can you reveal anything about materials and structure?

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Replies: 1

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Part Number: ISO1050

Dear Sir or Madam,

Datasheet mentions that there is a capacitive galvanic isolation and distance trough the insulation is 0.014mm. Now, I was wondering, could you reveal bit more detailed information about the structure that creates the actual isolation? To be more specific:

- How many isolation boundaries there really are? Just one or several? If there are several boundaries are they identical?  

- What is the material that creates the actual insulation? Kapton tape as in optocouplers OR glass OR vacuum OR something else?

- Do you have any kind of picture of the structure, you could share?

I am asking this because national certification agency states that ISO1050DW do not meet over voltage category III (OVCIII) in system voltage 300V if IEC 62477-1 considered...

(IEC 62477-1 is the successor of IEC 60950-1) 

  • Jouko,

    See the first section of this presentation for a clear understanding of our isolation architecture. In short, our digital isolators achieve isolation through 1 or 2 capacitor stages with a SiO2 dielectric for basic or reinforced isolation respectively. Also, have you seen the ISO1042? It is our newest CAN transceiver and can provide reinforced isolation.

    Respectfully,

    Lucas  

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