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Need help in designing H Bridge using ADUM7234

Question asked by Shankar on Jun 24, 2012
Latest reply on Jun 25, 2012 by bkennedy

I am designing a H Bridge circuit using ADUM 7234 (Isolated Half Bridge Driver) using the application note "Inside iCoupler® Technology: Driving an H Bridge with ADuM3220 Isolated Gate Drivers" in the above application note i have not understood why a diode is connected between VDDB & VDDA (11 & 16) pins so can you please explain


1) Importance of the Diode


2) Specifications of the Diode


3) Please Suggest a part number


Note: for quick reference i am attaching the application note


Thanks & regards