Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [multi-layer]

37 questions
13
votes
7 answers

Debugging a multilayer PCB?

This is not about debugging the actual hardware/software on the board... I had my first 6-layer PCB made recently, it's a 50mmx50mm board with the following stackup: Signal Ground Signal Signal Power Signal The actual signal types are irrelevant…
Ron Beyer
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11
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1 answer

How are layers kept parallel in multi-layer PCBs?

If I understand correctly the process to assemble multi-layer PCBs, two-sided boards are made, with separators intertwined, and they are then pressed together. The two-sided boards have already been etched, which in theory leaves an uneven surface.…
David Cian
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11
votes
2 answers

High Voltage Multilayer PCB

I want to design a four layer PCB, where on the top and second layer are voltage up to 600V present. While I find many information about trace spacing, I don't find anything about isolation between the different layers. Is it possible and safe to…
WernBraun
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6
votes
4 answers

Are Gerber files of inner layers interchangeable?

Regarding the Gerber files of a 4 layer PCB with 2 inner layers: Top layer: Analog signals Inner layer 1: Digital signals (SPI and I2C) Inner layer 2: Power planes (+3.3V and +12V) Bottom layer: GND plane For better isolation between analogue and…
Fry
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6
votes
2 answers

How to remove copper from inner planes on cut PCB

I'm in the middle of designing a specialized communications device that uses an off-the-shelf radio module. This radio module is larger than desired and the PCB area that is not needed is easily cut away. However, the module is built using a…
Dwayne Reid
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5
votes
2 answers

Power connection vias on 4 layer PCB

I am new to PCB design. I am creating a 4 layer PCB with the following layer stack: Signal (1) - GND (2) - Vcc (3) - Signal (4) Now, I'll need Vcc and GND on both the signal planes. This means I'll need blind vias from 1-2, 1-3, 2-4, 3-4 but the…
Rakesh Mehta
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5
votes
1 answer

Avoiding noise coupling by power switching to ground plane in multilayer PCB

I've a 4 layer PCB in which I've to layout a power switching supply mixed with digital signal circuit. My stack up is: Top Layer: component and routing (power net and signals) Internal plane 1: GND Internal plane 2: +3V3 Bottom Layer: routing…
Gianluca Suzzi
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4
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1 answer

How do I tell if a voltage regulator is enough to supply a larger board?

So I'm currently designing a PCB that's fairly large by my standards (10"x5"). It's a 4-layer board with internal GND and 5V layers. I'm currently using a linear regulator (LM340SX) to provide the 5 volts. The regulator can provide more than enough…
user236851
4
votes
2 answers

What are the rules to make different drill pairs for VIAs in PCB layers?

Considering a 6-Layer PCB with the layer sequence as below: 1-Signal 2-GND_Plane 3-Signal 4-Signal 5-VCC_Plane 6-Signal -What are the considerations that I should take care of when making drill pairs for VIAs? -Is it possible to make a VIA starting…
Milad
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4
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2 answers

PCB design, Ground plane and power plane issues

This is the first time I am designing a 4 layer PCB. The circuit will work on multiple frequencies: Signal acquisition part works on few Hz to 200 Hz(max), but one portion of the circuit will generate 13.56MHz. Power supply is 3.3V from a Lipo…
sbz
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3
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3 answers

Multi-layer PCB design

Why in the diagram below is called 4-layer board? Link: https://www.youtube.com/watch?v=ESnDQl7ZM5o From my understanding: A multi-layer PCB board: Top connectors and signal traces Power Ground Signal Is there any diagram or material I can read…
Alan
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3
votes
1 answer

Blind Via and Even Layers

I am a newbie to PCB designing. While reading articles I have found people talking about "covering even number of layers with blind via." I have talked to a local PCB manufacturer and they said the same thing adding that they can't do via like 1-2…
Rakesh Mehta
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2
votes
4 answers

Multilayer PCB with multiple different voltages

Currently I am creating a 6-layer PCB. I have multiple voltages as 3.3V, 5V, 12-14V and 48V. Now I am sitting on the stack up to get started with the tracing. Should I put multiple power planes for the different voltages? Would it be possible to…
Y-E-Quit
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2
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1 answer

Temperature rise for multiple layers of PCB

I'd like to better understand what to expect when carrying current on multiple layers of a PCB. I've used trace width calculators to determine how wide a trace needs to be to carry a given amount of current while limiting temperature rise to a…
mattmunee
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2 answers

How to connect multiple ground pins in a FFC connector

So I have a bunch of these FFC connectors shown here, and a lot of the middle pins are actually ground pins (highlighted in green). I have a multi-layer board, so I want to route all these grounds to an internal layer. Do I need to run separate…
TAK
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