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UCC27712: No interlock or dead time

Ronald RiemVis
Prodigy 30 points
Part Number: UCC27712
Other Parts Discussed in Thread: UCC27714

Busy with a design with the UCC27712 high and low gate driver I stumbled on the interlock time of 100 nSec

The total pulse width is 370 nSec.

The high side pulse is nice but the low side start to work after 190 nSec which result in a narrow pulse for the LO gate

Is there a way to let this IC work on about 3 MHz with proper outputs? the delay between the LO and HO I can arrange myself

Can I order this IC without interlock ?

With regards

Ronald

  • 0
    TI__Genius 10655 points

    Hey Ronald,

    Thank you for your question regarding the UCC27712.

    At 3Mhz, the total period is about 333ns, so 370ns total pulses will not work at 3Mhz. Can you please share your HI/LI and HO/LO waveforms or more specifications about what you are trying to achieve?

    We do not offer the UCC27712 without interlock. But, we do have the UCC27714 that is also a 600V driver and has higher drive current without interlock. Depending on your bus voltage, we offer 120V drivers without interlock as well.

    Let me know if you have any questions.

    Thank you,

    William Moore

  • 0 in reply to William Moore
    Prodigy 30 points

    Hi William,

    I know  370 nS is lower than 3 MHz, it was more to indicate the speed I need.

    The suggested UCC27714 does not meet my mechanical place I have.

    Thanks for your answer and will search for other solution

    With friendly greetings

    Ronald