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Original question:

TMCS1133: 1300V Reinforced Isolation

TMCS1123: Insulation Lifetime

Engin Baran
Prodigy 10 points
Part Number: TMCS1123

Tool/software:

Hello! 

I would like to use TMCS1123 in our design. However, I need a sanity check about the insulation specification. Insulation lifetime is estimated 30 years at 800Vrms stress voltage, as shown in Figure 8-2 on the datasheet. If the part is exposed to continuous ±800Vdc±200Vdc, would it reduce the insulation lifetime?

Best regards,

  • +1
    TI__Expert 5410 points

    Hello Engin,

    If it is continuously being exposed to more than 800Vrms, then the insulation lifetime will be less according to the curve of Figure 8-2.

    Let me know if you need further clarification.

    Best,

    Holly