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UCC21520: what's the Ivcci quiescent current at 12V supply?

Max Han
Intellectual 2260 points
Part Number: UCC21520

Hi

in UCC21520 datasheet, there is only the iq of Ivcci at 3.3V and 5V.

customer want to know the data at 12V vs temperature.

could you show me the data?

thanks.

  • 0
    TI__Intellectual 2260 points

    Hi

    when UCC21520 works with MOSFET, the Ivcci increase a lot or same as quiescent current?

    thanks.

  • 0 in reply to Max Han
    TI__Expert 3355 points

    Hi Max,

    Thanks for your question.

    I plotted some data for 3.3V, 5V, 12V, and 18V to show the trend. There is not much difference between these input voltages.

     

    ICCI will increase by about 1mA per channel when an input is set high. For example, if both inputs are set high (with DT tied to VCCI to deactivate the overlap protection), both channels will transmit and consume an extra 2mA on top of ICCq. If running with both inputs complementary and 50% duty cycle, the channels will consume an extra 1mA on top of ICCq.

    Thanks and best regards,

    John

    All information in this correspondence and in any related correspondence is provided “as is” and “with all faults”, and is subject to TI’s Important Notice (http://www.ti.com/corp/docs/legal/important-notice.shtml).