Other Parts Discussed in Thread: TINA-TI
I am following SVLA458a to design to converter -4.5 volts from +12 input but it is not working in TINA. The positive design simulates fine.
I believe I have made the correct adjustments to the positive design schematic per SVLA458a. Please note and confirm that on page 10 of SVLA458a it should read:
"Figure 4 to Figure 10 show the experimental test results of the Figure 3 design" and not the "...test results of the Figure 1 design."
I suspect there is an error in my schematic input but don't see it. the phase spikes high one time at the start but then stays low.
Have you simulated the negative design in TINA? if so can you make it available?
thanks,
Mike
