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UCC27212: UCC27212 peak pullup and pulldown currents

Mark Zaitcev
Prodigy 20 points
Part Number: UCC27212

Hello!

I have some question about information in your datasheet  for device UCC27212.

According to information on page 7, test conditions for peak pulldown current are: 
VLO=12V for VDD=6.8V. 

How is it possible?

Moreover, we have some information on page 5, which says that maximum value for output voltages VLO and VHO are VDD+0.3 and VHB+0.3

And there is some information on page 12, which prove this condition. We can see that output doesn't exceed supply voltage.

  • 0
    TI__Mastermind 23015 points

    Hello Mark,

    Thank you for the interest in the UCC27212. On your first comment I think you definitely spotted a typo in the test conditions. As you suggest it should specify VDD=VHB=6.8V and VLO= 6.8V. Basically the highest pull down current can occur just as the output starts falling from the high peak value.

    The absolute maximum table ratings of LO and HO of VDD +0.3V and VHB +0.3V refers to driver output voltage that can occur in the rising edge transition, not really a DC condition.

    In a DC on condition the driver outputs really cannot exceed VDD, for LO or VHB for HO.

    Confirm if this addresses your questions, or you can post additional questions on this thread.

    Regards,