Hi Teams,
I want to build a boost power supply, converting +12V to +65VDC, max Iout 1A.
Webench recommends the LM5022. So I build the TINA simulation file. Everything is nice, except the output voltage cannot be regulated to 65V. According to the webench report, the FB voltage divider was set as 18.2k:360, and the ouput voltage is 61V.
Cause my target is 65V, so I modified the divider aiming to get a higher output. However, no matter by decreasing RFB1(200) or increasing RFB2(20k). The output was still at 61, and not going higher any further.
On the contrary, getting a lower output can be easily achieved by decreasing RFB2 or increasing RFB1.
Can you kindly help to solve this problem?
The .TSC file is attached.
Thanks and BRs.
Marsh.