Dear Expert
End customer take another good D/C compare to current failure 4 D/C, we bought these D/C all has the same problem but the new D/C no any issue.
See below detail test report, hope u can check these 4 D/C 's problem.
Schemtic :
Test setup
Test setup: Code at the back of IC= 6C213 (Good Unit)
Blue=Input Voltage
Red= Voltage on PIN 1
See the Ringing at 1,9V transition
Zoom In
