UCC27424: OUTA and OUTB Max voltage

Alfred Logico

Expert 4720 points

Part Number: UCC27424

Hi Team,

Do we have any data or info on the max voltage the OUTA and OUTB pins of the UCC27424 support?

Thanks!

BR,

Alfred

over 1 year ago

0 Rubas Khalid over 1 year ago

TI__Expert 7015 points

Hi Alfred,

Previous bench testing yielded 16V as the max voltage for the OUT pins.

Thanks,
Rubas

0 Alfred Logico over 1 year ago in reply to Rubas Khalid

TI__Expert 4720 points

Hi Rubas,

What about for negative input voltage? Customer mentioned that they do see around a -1.1V across the OUTx pins for around 400ns, will this be okay or will it pose risk to damage the part?

THanks!

BR,

Alfred

0 Rubas Khalid over 1 year ago in reply to Alfred Logico

TI__Expert 7015 points

Hi Alfred,

Typically they should be treated as having a minimum rating of -0.3V at DC and -2V for less than 200ns. However, it's not guaranteed as this is not a spec'd data.

Thanks,
Rubas

0 Alfred Logico over 1 year ago in reply to Rubas Khalid

TI__Expert 4720 points

Hi Rubas,

For below instance where customer is seeing -1.12V at 400ns, do you think that this can damage the device?

Thanks!

BR,

Alfred

0 Rubas Khalid over 1 year ago in reply to Alfred Logico

TI__Expert 7015 points

Hi Alfred,

That looks like a small ringing transient, but it may lessen the lifespan of the device in the future. You could possibly work around this by adding/modifying the gate resistance, which you can find through this guide: https://www.ti.com/lit/an/slla385a/slla385a.pdf

There's a small RLC circuit from parasitics that creates the ringing, so adding a gate resistance could help dampen the peak.

Thanks,
Rubas

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UCC27424: OUTA and OUTB Max voltage