ADUM5411 VDD1 voltage out issue

Question

I use the ADUM5411 for isolate 3.3V and 5V logic. so I designed circuit as following : 
 I konw that the VDD1 is a voltage Input pin, but VDD1 is measured 4V. 3V3_MAIN is my board's main power, but it's voltage go up to 4V cause VDD1. 
 
 I know that VDD! is indpendent of VDDP as datasheet :

I don't know what's the problem?? I want to know if tthere is a any problem on my curcuit?

ManseungYoo · Accepted Answer

I find my mistake in my schematic. VE1 is Side 1 logic circuit as following diagram. (VDD1, GND1, VIA, VIB, VIC, VOD, VE1) 
 
 VE1 should be connected to VDD1. 
 Thank you for your interest and response.)

Partner Forums

Partner Libraries

Products Mentioned

Associated Drivers

ADUM5411 VDD1 voltage out issue