I used TI's webench design tool to generate -15V fixed output from 18-21V input.
The IC suggested was LM25005. Please see the attached file for design.
On my first test, i was getting -3.55V output.
on datasheet its mentioned, that pin 1:Vcc = 7V and Vfb = 1.225V
But on testing i did not get the values to be that. Can someone tell me what could be the problem
I have tested this on two seperate prototype and both gave the same result.