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ADum4223 undershoot voltage

Question asked by Webber.Tsai on Jul 18, 2016
Latest reply on Jul 25, 2016 by RSchnell

Dear Sir

I use ADUM4223 have questions,  design to half-bridge circuit, the datasheet maximun ratings table11 which illustrate voa range -0.5V to VDDA + 0.5V, the actual measurement voa waveform

 

Found undershoot voltage (-540mV & -920mV) is greater than the datasheet specifications, is there any suggestion circuit can improve this problem & ADUM4223 undershoot can withstand long time?

 

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