12v transfer to 0.95v50A. there is an error in vout, vout got to 1.68v as the below picture.as u see, isn't any problem in my schematic ?pls help and give me some advice.
Can you double check below?
1) Multimeter reading for VOUT is 1.68V?
2) R257 =103.5K?
4) VOSNS1 is not connected to VOSNS2?
VFB=0.55V,others' ok. is there any problems in vfb ?
I saw you have correct the schematic and please ensure in the layout DIFFP and VOUT pin do get connected.
Let us know if you still have issue after try the suggestions mentioned before.
Additoon a resistor 10ohm between DIFFP and VOUT, DIFFN and GND are hard to change after all the layout is finished.
and then, as you see, the below shcematic is anther one output is 0.95V which is normal working.
So it's not falut in connection between DIFFP and VOUT, DIFFN and GND.
Anything else part need to be make sure on this case?
The schematic looks good with me if the proposed VOUT and VOUT_SENSE pin are tied together as recommended.
Please check the assemble then.
May I have a doubt between vref and voust1 ?
There is no problem on your schematic connection. Please see datasheet page 12 regarding this part of the connection.