Wasnt aware of shielded inductors but it seems similar to how film caps have an outer foil end that acts as shielding when connected to ac ground. Cool:)
One thing I’ve been wondering lately is it there is an advantage in removing the ground pour under and inductor. I was going to spin some boards for testing and his but it would be good to know if there are any papers about it. The example layouts don’t show this and it’s not mentioned in the ones i’ve read.
It depends on the quality of the manufacturer in the process. For example, if you fill it with copper and distribute vias under the inductor, during the welding process it may occur that the solder deviates from the inductor pad. But nowadays this is very rare to happen. Now, if the problem is whether there will be a magnetic field leak, I have seen PCBs with 4 layers, the layer immediately below the inductor was not filled, but all the other layers were. Nothing that impacts the operation of normal household equipment anyway.
Yes, it's guaranteed. Take TDK for example. However, at high frequencies and low inductances used in SMPS today, I see no relevance to the polarity of the inductor.
Wasnt aware of shielded inductors but it seems similar to how film caps have an outer foil end that acts as shielding when connected to ac ground. Cool:)
Very informative and interesting. Thank you very much.
excelente clase.... saludos desde Barquisimeto Venezuela
One thing I’ve been wondering lately is it there is an advantage in removing the ground pour under and inductor. I was going to spin some boards for testing and his but it would be good to know if there are any papers about it. The example layouts don’t show this and it’s not mentioned in the ones i’ve read.
I think Zach Peterson address this particular issue in one Altium video series.
It depends on the quality of the manufacturer in the process. For example, if you fill it with copper and distribute vias under the inductor, during the welding process it may occur that the solder deviates from the inductor pad. But nowadays this is very rare to happen. Now, if the problem is whether there will be a magnetic field leak, I have seen PCBs with 4 layers, the layer immediately below the inductor was not filled, but all the other layers were. Nothing that impacts the operation of normal household equipment anyway.
is there guarantee that marked pin of inductor is connected to internal turn of winding
Yes, it's guaranteed. Take TDK for example. However, at high frequencies and low inductances used in SMPS today, I see no relevance to the polarity of the inductor.
Interesting , this is great to know
You are god of hardware