Output Power Usage of ADuM3070

Hello,

As mentioned in the datasheet of ADuM3070, we can get up to 2.5W output power with 5V input voltage. I  wonder up to what percentage of this output power can be occupied by the transformer. I mean, I'm plannig to use schematic in Figure 32 given in the datasheet and  a transformer having power rating lets say, 2.3W (instead of 2W) for Viso(+24V). On the other hand we have Vdd2(+5V) as an output voltage of ADuM3070. Is that possible? Its not briefly mentioned in the datasheet.

Thank you in advance!

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  • 0
    •  Analog Employees 
    on Jun 1, 2018 9:44 PM

    Ozgun:

    From one of your EngZone posts, attached is the block diagram - is this still the application you need? I have placed the supply current values on the diagram, and if 80% efficiency the ADuM3070 VISO 5V supply would need to output 375mA, which meets the min spec for the ADuM3070 of 400mA at 5V.  

    Is this the application you need and if so what is the need for more than 2.1W?

    Regards, Brian

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  • 0
    •  Analog Employees 
    on Jun 1, 2018 9:44 PM

    Ozgun:

    From one of your EngZone posts, attached is the block diagram - is this still the application you need? I have placed the supply current values on the diagram, and if 80% efficiency the ADuM3070 VISO 5V supply would need to output 375mA, which meets the min spec for the ADuM3070 of 400mA at 5V.  

    Is this the application you need and if so what is the need for more than 2.1W?

    Regards, Brian

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