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Why am not able to get a grasp of PCB designing?

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jhpadjustable:

--- Quote from: tautech on November 29, 2019, 10:06:40 am ---8x 22uF caps, that's nuts !  :-//
Ceramic, right ?
Sub them out for a couple of 100uF SMD tantalums.

--- End quote ---
"Nuts" is not an engineering justification. It's far from uncommon to see stacked ceramics in SMPS power supply applications. Personally, I would like to see some analysis of that change before counseling the addition of detonators into what are already not far from bombs.

tautech:

--- Quote from: redgear on November 29, 2019, 10:10:58 am ---Ok, so 100uF on both SW and VOUT networks,right?

--- End quote ---
Nope, a Net called BAT has 4x when 1 would do.

BTW, see how Net Bat has a name but not a Net label like many others. Gnd for example....BTW they should always point down.

When you use hidden connections like VCC/VDD for a IC be sure to assign them a Net label then the program does the rest and creates a ratsnest link whereas if you don't things become disconnected.

redgear:

--- Quote from: tautech on November 29, 2019, 10:24:53 am ---BTW, see how Net Bat has a name but not a Net label like many others. Gnd for example....BTW they should always point down.

--- End quote ---
I used the net label for it just like I did for others. By 'Point Down' do you meant the label should be at the bottom of the wire?

--- Quote ---When you use hidden connections like VCC/VDD for a IC be sure to assign them a Net label then the program does the rest and creates a ratsnest link whereas if you don't things become disconnected.

--- End quote ---
Yeah, I did that.

Thanks

redgear:
@tautech

Update:

I have managed to place the all components within my board boundaries and have made it less messy than before.
Need sugggestions...

I am attaching the png with this reply.

thinkfat:
With C1/C2 right there, it's going to be tricky to route the differential traces to J6. If you turn the controller 45° clockwise, it might become easier.

Also, what are all those net-ties doing there? They seem to serve no actual purpose. What nets to you need to tie together?

Rotate Q1 90° anticlockwise to shorten some traces.

Place C3 directly adjacent to the pads it's connecting to, move the whole group a bit to the right to make space.

What's the purpose of Q3/Q4/Q6, VBUS switching? It looks like they'd better be place on the left side of the controller, and the controller moved towards the right to make space. This would also make routing to J6 easier. Or, if they actually do VBUS switching, they functionally belong the connectors, so move them over.

Move C5 closer to the controller pads it connects to, reduces waste of board area.

Giving hints on component placement is really hard if you don't provide schematics...
EDIT: I found a PDF with schematics attached to a prior post, mango.pdf, is that the latest one?

Update: Oh yeah, as others noted, DS1 must go away there. Flip it 180° and move it to the bottom of the board.

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