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@all,
Thanks for everybody who enhanced my understanding. The inductor was bought from a local shop, it was sold with that rating, but I am not sure on that.
In the meanwhile I requested and got an evaluation board, the converter works very well.
Looking back, it appears those that doubted...
This is the schematic.
This is the actual wiring on the perforated board,
The white strip is an improvised heatsink for the IC. The pins are projecting out from the sides and wires/components are directly soldered to them.
The inductor is 8.2 µH, 3 A. Saturation does not seem to be a...
@mqlli_1729:
I have tried with different loads, 4.5 ohm to 13 ohm. No difference in behaviour.
From your comments, it seems you have used them before. Can you tell me what was your experience ?Did they work for you ?
Thanks,
Please see the above schematic. That shows recommended schematic and the changes for my Vout requirement.
I left the circuit on overnight, the Iout (43 mA) is constant, so there is nothing short.
But on load, Vout is dropping and I am unable to get specified Iout
Open circuit refers to Vout alone. When Vout is open - not connected to load - then signals on all pins and Vout are correct, but the moment Vout is connected to
a load, the voltage drops to 0.17 V and. I out corresponds to it.
Will post the schematic later.
Thanks
@malli_1729:
Thank you very much.
I got samples for AP3503E. As I do not have a board for it, I set it up on a perforated board with TH components and an improvised heatsink.
My Vin is 12 V. The voltage output -Vout=5 V and open-circuit FB and COMP and all other signals are perfect. But when...
Hi All,
I need a power regulator with Vin=12 VDC, VOUT=5 VDC, Iout=2 A. I guess using a linear voltage regulator for this is out of question.
I found a part in Mouser, AP3503E from DIODES INC.
Datasheet is available here
diodes.com/datasheets/AP3503E.pdf
Application notes available here...
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