Questions tagged [ground-plane]
An area of copper on a PCB which is connected to the PCB's ground node in order to provide a return path for current from the various circuits on the board. The ground plane's area is typically made as large as possible (even occupying an entire board layer) in order to minimize its impedance, thus allowing it to conduct high return currents without a significant voltage drop from one part of the board to another. Use with related tags such as "pcb".
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How to fully connect component pad with the ground plane
I'm trying to make a simple PCB board on eagle.
I've learned how to make a ground plane, and it worked great. But I wonder, why is the component pins/pads connected to ground as more like a plus (+) ...
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Need feedback for a PCB design (digital/analog synth)
Ok so I'm designing a synth using the NES sound chip (AY-3-8910). After poorly designing a PCB for it and testing it, I realized there is noise from the MIDI input bleeding to the audio output.
I read ...
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How to calculate temperature rise of PCB polygon?
I'm designing a PCB where I have a polygon that carries current from one terminal to two pads, each pad should pull 33 Amperes, so a total of 66 Amperes running through that polygon.
How can I ...
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Protecting External Connector Ground Pin from ESD
I have some TRS (stereo phone) connectors on my protable USB device (no earth ground), and I'm wondering what to do about ESD events that enter the device via the sleeve (ground) of the connector.
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Conductive or insulated motherboard-standoffs?
AFAIK it's common practice to mount an ATX motherboard to conductive brass standoffs inside the case. There are even metal traces around the screw holes to provide contact between the screws and the ...
user127725
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Top layer ground flood on 4 layer board - how should the ground planes be connected?
I have a 4 layer board, with inner layers being power and ground. After laying out the components and completing the tracking I do a top layer flood as an additional ground plane. How should the two ...
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How to connect four different ground planes in the same PCB?
I am working on a project which uses the LTC4020 multi-chemistry battery charger from Linear Technology. The design includes a microcontroller ( NXP KL25Z) to provide additional outputs and ...
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Ethernet external magnetics layout
I am laying out a 10/100Mbps Ethernet PCB with discrete magnetics. From the magnetics to the PHY chip I have a system ground plane on the adjacent layer for the return path. From the connector to the ...
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How to correctly ground/isolate a grounded enclosure type thermocouple?
My K-type thermocouple (grounded enclosure type) connected to MAX31855 adapter connected to Arduino Mega gives me faults every few readings. It's really, really bad. I've tried swapping thermocouples, ...
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Chassis and digital ground in an eight layer PC motherboard
I have GNDC (chassis GND) and GND (digital GND) on my PC motherboard design.
All connectors in my design (RJ45, USB-TypeC, USB-TypeA, HDMI, DP, etc.) are connected to the chassis through the GNDC ...
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Is it bad practice to connect a heatsink to my PCB's ground plane?
So, basically, I have this LED project which is going to dissipate lots of heat (I am assuming close to 50W) inside a case. The LEDs themselves are on a separate aluminum board which will be attached ...
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Mesh ground advantage over single rod ground
In high voltage laboratories, how do mesh grounds perform better than that of single rods?
Does frequency play a role here ?
Which one is more beneficial, using multiple single rods in lab for ...
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VCC and GND islands on TOP layer
I was checking Intel Tiger Lake UP3 reference board layout and I noticed that they made core VCC islands on top layer and through vias they connected to a layer that has the bigger/continuous plane of ...
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Should there be ground vias on a TVS diode GND if positioned right next to a DC jack?
Say you have a TVS diode which is right next to the DC jack, would you want to have ground vias around the GND pad of the TVS diode, or would you want to avoid vias here because the current would just ...
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How parallel plates are buried in the soil in real life?
From this site:
The most common reference is Earth itself. Power systems are usually
“earthed” at some point to provide a reference for the system
voltages. The earth symbol represents the parallel ...
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Connected ground planes from different power sources not working
I made a simple uC (8266) based schematic that controls some peripherals. It is powered via 12v ac-dc power supply connected to the lm2596:
PCB1:
The uC has uart connector like that:
PCB1:
This is ...
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OrCAD Allegro PCB Designer Ground Plane
i want to assign a black color to Ground Plane (GND 0), it's shape is polygon and it's color is gray like shown on below image, i have two questions:
is this a possible polygon shape to implement ?
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PCB Ground and Power Plane Design Guidelines
I am converting a design from through hole components to SMT components.
The schematic is identical, except the maximum allowable current through an onboard relay will be halved from 20A to 10A.
...
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EAGLE PCB GND Plane not properly connecting to through hole pins
So I submitted this board design to PCBWay to get prototypes, but they kicked it back to me saying that there are very thin wires throughout the board. Upon inspecting the pictures they sent back to ...
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EN55032 Conducted Emissions - 40cm From Vertical Reference Ground Plane
I've always wondered why we need to position the EUT 40cm from the metallic wall for conducted emissions testing. Does it have something to do with the EUT capacitively coupling the higher end of the ...
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Long slots in gnd plane of 2 layer board
I'm trying to design a computer keyboard pcb (2 layer), and because of the placement constraints intrinsic to this situation, I have very long (spanning 80% of the dimension) slots (discontinuities) ...
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How can I step down 24V to 5.5V and 3.3V with separate grounds?
I have a 24VDC 4A input that I need to step down to both 5VDC and 3.3VDC, but I need the 24V ground plane to be separate (isolated) from the 5V and 3.3V plane (these can have a shared ground).
What ...
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EAGLE 7.7 do not fill GND polygon
Adding a polygon GND, but it not going to fill at all. Ratsnest - not helping. Orhans also not helping. Any idea?
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Bluetooth antenna on top of large metal object and other RF questions
I've been doing some research on RF antenna design considerations but haven't really found anything close to the situation my device will be in. I am designing a wireless sensor for my FSAE team that ...
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PCB via array for "better" heat dissipation
My two PCB mount power supplies are getting quite hot (temp 60 to 70 degrees). Max temp of the power supply is 90 degrees. I cannot use external heatsinks due to space constraints.
Input voltage is ...
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Vias versus ground plane entirety
I am facing a kind of dilemma with my PCB design. I am designing a two-layer PCB with the ground plane (GP) on the 2nd layer. I have many tracks that run from one side to the other of the board, hence,...
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Proteus 8.11 - Ground plane disappearing when I try to route or move a component
I have a two-layers thru-hole PCB in Proteus 8.11, and I am trying to put a ground plane on the bottom layer. But, every time I move a component or try to route, the ground plane just disappears. I ...
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Is it necessary to remove ground on all layers when using isolated DIO
So, I am using uptocouplers and digital isolators for a project connected to a microcontroller GPIO. I removed the ground (ground plane cutouts) under the load side of the components, is it necessary ...
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Clarification of solid ground plane (antennas)
I'd like some clarification on identifying if a ground plane is solid or not. Is the definition for a solid ground plane simply a ground plane with no gaps?
For example, would the antenna below be ...
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Ground Planes, 0v or GND?
I have a board that has a dual voltage isolated DC-DC converter on it.
The converter takes 0 an 5v in and gives -5,0,5 v out.
The 0v of the input is actual ground.
Most of the PCB uses the isolated ...
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Connecting Ground Paths
I am using a stm32f407vgtx to control full bridge drivers which drive a H bridge of 4 N-channel Mosfet. I don't have any idea about grounding.
I am thinking of using two separate ground AGND (ground ...
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Split Ground plane with motor drivers
This is a PCB with few stepper drivers.
I have a question about the ground plane. I have this idea to split the ground plane for each driver, so, I force the return path to pass through the capacitor....
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Altium: Via stitching not connecting to plane?
I'm experiencing an issue in altium where my Via stitching vias on the GND net will not connect to my ground plane. Individually placed vias will connect fine through from the top layer polygon GND ...
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Oscilator grounding on mixed signal PCB
I have a DAC using MCLK from an oscillator. All literature that I read suggest to ground it to analog ground. However the output of my DAC (analog output) is also close by and I am afraid that my (...
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RF antenna and ground plane
In RF design when antennas are used it is said that the antennas require a larger ground reference.If they have suggested a ground reference and if we are using a smaller one than recommended will it ...
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