problem with AC-DC conversion using LNK6666E
hi,
we design SMPS using following specifications.
Application: Industrial Instrumentation,automation,pharma machinery
Input Type: Universal
Output Voltage: 15 VDC
Output Current: 2A
Output Power: 30 W
part used: lnk6666e
also
following are some list of problem,
1. not getting output
2. out put fluctuates.
3. when smps not powered up, using tester when we touch to pin no. 1 PD smps works.
4. output voltage drops.
and some more but not in all smps, we face problem in nearly 30 to 40%.
kindly go through attached schematic,and transformer data sheet pcb layout.
and suggest the corrective action. we are not able find out exact issue problem where it is at design or pcb layout or at component value / selection.
Files
Attachment | 大小 |
---|---|
layout_1.pdf | 165.86 KB |
sch_4.pdf | 45.31 KB |
Transformer LNK6666E 15V 2A.pdf | 1.22 MB |
Hello,
We will be reaching out offline to answer your inquiry.
Thank you