Recently, i got some problems(fault) with AD5735 AD converter chips. ( only channel A output problem )
i think it's because the SW(DC to DC converter switching) output was not normal. but don't know it's due to an external circuit or chips problem.
i change the all parts except AD5735 but get same result. and change the AD5735 then it;s fixed. ( big problem is it's not a single one )
abnormal channel A's SW out ( result Converter output voltage is about 46.6V)
normal channel B~D's SW out ( result Converter output voltage is about 14.7V)
I've been using the same circuit and chip for over 10 years in the elevators control systems, but this is the first time I've had a problem like this.
Please advise me if there is something I am missing somewhere.
( Sorry for the lack of English, I am not a default speaker )