• Terminal
    Terminal
    An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
  • Ground
    A common return path for electric current. Commonly known as ground.
  • Net Portal
    A net identifier used to create connectivity to other Net Portal with the same designator. #portal
  • Power Net Portal
    Power net portal is a special schematic object used to define a power or ground net. Power ports allow you to conveniently indicate a power net at any location in the design. Power nets of the same designator automatically connect throughout your design #portal #power
  • Generic Resistor
    A generic fixed resistor for rapid developing circuit topology. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0Ω 10Ω 100Ω 1.0kΩ 10kΩ 100kΩ 1.0MΩ 1.1Ω 11Ω 110Ω 1.1kΩ 11kΩ 110kΩ 1.1MΩ 1.2Ω 12Ω 120Ω 1.2kΩ 12kΩ 120kΩ 1.2MΩ 1.3Ω 13Ω 130Ω 1.3kΩ 13kΩ 130kΩ 1.3MΩ 1.5Ω 15Ω 150Ω 1.5kΩ 15kΩ 150kΩ 1.5MΩ 1.6Ω 16Ω 160Ω 1.6kΩ 16kΩ 160kΩ 1.6MΩ 1.8Ω 18Ω 180Ω 1.8KΩ 18kΩ 180kΩ 1.8MΩ 2.0Ω 20Ω 200Ω 2.0kΩ 20kΩ 200kΩ 2.0MΩ 2.2Ω 22Ω 220Ω 2.2kΩ 22kΩ 220kΩ 2.2MΩ 2.4Ω 24Ω 240Ω 2.4kΩ 24kΩ 240kΩ 2.4MΩ 2.7Ω 27Ω 270Ω 2.7kΩ 27kΩ 270kΩ 2.7MΩ 3.0Ω 30Ω 300Ω 3.0KΩ 30KΩ 300KΩ 3.0MΩ 3.3Ω 33Ω 330Ω 3.3kΩ 33kΩ 330kΩ 3.3MΩ 3.6Ω 36Ω 360Ω 3.6kΩ 36kΩ 360kΩ 3.6MΩ 3.9Ω 39Ω 390Ω 3.9kΩ 39kΩ 390kΩ 3.9MΩ 4.3Ω 43Ω 430Ω 4.3kΩ 43KΩ 430KΩ 4.3MΩ 4.7Ω 47Ω 470Ω 4.7kΩ 47kΩ 470kΩ 4.7MΩ 5.1Ω 51Ω 510Ω 5.1kΩ 51kΩ 510kΩ 5.1MΩ 5.6Ω 56Ω 560Ω 5.6kΩ 56kΩ 560kΩ 5.6MΩ 6.2Ω 62Ω 620Ω 6.2kΩ 62KΩ 620KΩ 6.2MΩ 6.8Ω 68Ω 680Ω 6.8kΩ 68kΩ 680kΩ 6.8MΩ 7.5Ω 75Ω 750Ω 7.5kΩ 75kΩ 750kΩ 7.5MΩ 8.2Ω 82Ω 820Ω 8.2kΩ 82kΩ 820kΩ 8.2MΩ 9.1Ω 91Ω 910Ω 9.1kΩ 91kΩ 910kΩ 9.1MΩ #generics #CommonPartsLibrary
  • Generic Capacitor
    A generic fixed capacitor for rapid developing circuit topology. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF 10pF 100pF 1000pF 0.01uF 0.1uF 1.0uF 10uF 100uF 1000uF 10,000uF 1.1pF 11pF 110pF 1100pF 1.2pF 12pF 120pF 1200pF 1.3pF 13pF 130pF 1300pF 1.5pF 15pF 150pF 1500pF 0.015uF 0.15uF 1.5uF 15uF 150uF 1500uF 1.6pF 16pF 160pF 1600 pF 1.8pF 18pF 180pF 1800pF 2.0pF 20pF 200pF 2000pF 2.2pF 22pF 20pF 2200pF 0.022uF 0.22uF 2.2uF 22uF 220uF 2200uF 2.4pF 24pF 240pF 2400pF 2.7pF 27pF 270pF 2700pF 3.0pF 30pF 300pF 3000pF 3.3pF 33pF 330pF 3300pF 0.033uF 0.33uF 3.3uF 33uF 330uF 3300uF 3.6pF 36pF 360pF 3600pF 3.9pF 39pF 390pF 3900pF 4.3pF 43pF 430pF 4300pF 4.7pF 47pF 470pF 4700pF 0.047uF 0.47uF 4.7uF 47uF 470uF 4700uF 5.1pF 51pF 510pF 5100pF 5.6pF 56pF 560pF 5600pF 6.2pF 62pF 620pF 6200pF 6.8pF 68pF 680pF 6800pF 0.068uF 0.68uF 6.8uF 68uF 680uF 6800uF 7.5pF 75pF 750pF 7500pF 8.2pF 82pF 820pF 8200pF 9.1pF 91pF 910pF 9100pF #generics #CommonPartsLibrary
  • Generic Inductor
    A generic fixed inductor for rapid developing circuit topology. *You can now change the footprint and 3D model at the top level anytime you want. This is the power of #generics
  • CTL1206FYW1T
    Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlink
  • 1070TR
    Battery Holder (Open) Coin, 20.0mm 1 Cell SMD (SMT) Tab bate or batt #forLedBlink
  • 875105359001
    10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcan
please explain what U1 does.

@copilot please explain what U1 does.
1y
U1 is a WIZnet W5500, which is a hardwired TCP/IP embedded Ethernet controller. This chip provides an easier way to achieve internet connectivity in embedded systems.
Key features and abilities of U1 (W5500) include:

  • A single-chip solution that embeds TCP/IP stack, 10/100 Ethernet MAC and PHY. This enables users to implement an Ethernet application by adding just the simple socket program.
  • Capability to support TCP, UDP, IPv4, ICMP, ARP, IGMP, and PPPoE protocols.
  • Support for high-speed SPI (Serial Peripheral Interface) for easy integration with the external microcontroller.
  • Internal 32KB memory buffer for processing Ethernet packets.
  • Capacity to support 8 independent hardware sockets simultaneously.
  • Provision of Wake on LAN (WOL) and power down mode options which are useful for reducing power consumption.
  • Built-in PHY embedded for 10BaseT/100BaseTX.
Given its features, the W5500 is suited for a variety of embedded applications like home networking devices, serial-to-Ethernet, parallel-to-Ethernet, USB-to-Ethernet, GPIO-to-Ethernet, security systems, and factory and building automations.
In your project, it serves as the central component handling all the Ethernet and internet connectivity functions.
1y
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w5500 restarts because of ESD

@copilot w5500 restarts because of ESD
10mo
The W5500 Ethernet chip restarting due to electrostatic discharge (ESD) could indicate that the circuit lacks sufficient protections against ESD. There are several steps you can take to help protect your circuit:

  1. ESD Protection Devices: These can be placed at the Ethernet connector inputs (RJ-45). TVS diodes are often used for this purpose. They are designed to protect the circuit by clamping the voltage when the ESD occurs.
  2. Grounding: In your project, make sure that all the ground points (identified as Exclude from BOM: true) are properly connected with minimal impedance, especially the AGND pins on IC (like U1:(AGND)). Capacitors on power supply pins (U1:(AVDD) and U1:(VDD)) should be placed as close as possible to the IC pins, with the ground side going directly to a large ground plane.
  3. Decoupling Capacitors: Use decoupling capacitors close to the power supply pins of the W5500. Already in your project, capacitors like C19, C22, C14 etc. are connected across power supply lines for this purpose.
  4. Appropriate Layout: Always try to keep all Ethernet-related traces as short as possible to limit antenna-effect picking up environment ESD. Also, ensure that the PCB traces have the proper impedance matching.
  5. Isolated Power Supply: Use of isolated DC-DC converter for providing power to the Ethernet PHYs could be beneficial in keeping noise due to ESD out of your system power rails.
  6. Isolate IC from Human Interactions: Try to isolate the W5500 IC from interfaces accessible to humans, like Buttons, LEDs etc. These are common points where ESD could get in.
Please verify these strategies are in place in your design. The problem could also just be a bad unit or a marginal power supply. But power looks good in your design based on U2:(VIN) coming from a 12V source +12V:(P1) and properly decoupled using capacitors C19 and C21.
Remember that ESD protection is a holistic process and requires considerations at the system level, PCB level, and component level.
10mo
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3
w5500 stops working because of ESD

@copilot w5500 stops working because of ESD
10mo
The W5500 chip by WIZnet can indeed be susceptible to Electrostatic Discharge (ESD) damage, like many other semiconductor devices. ESD can cause permanent damage to the chip, which might be why your W5500 has stopped working.
If an ESD event has damaged the W5500 in your PoE project, the best solution would be to replace the component. However, there are steps you can take to prevent ESD damage in the future:

  1. ESD Protection Devices: Consider using external ESD protection devices such as TVS diodes. They can shunt the high voltage transients produced by an ESD event away from sensitive circuit elements. Connect them as close as possible to the connector leading to sensitive devices like Ethernet chips.
  2. Grounding: Ensure a clear and efficient grounding system. A well-designed system provides a path for the ESD dissipation.
  3. Correct Handling Procedures: Always handle components with care at all stages to avoid any unnecessary ESD. Operators should be grounded using ESD wrist straps when handling these devices.
  4. ESD Safe Workspace: Work in an ESD-protected area and use ESD-safe storage for sensitive components.
  5. PCB Layout: In the PCB Layout, it can be helpful to have some ESD protection too. This could include things like ground guard rings and placement of components and traces in the layout to minimize exposure to potential ESD sources.
10mo
restarts because of ESD
10mo
Restarting because of Electrostatic Discharge (ESD) is a common problem in many devices, and the W5500 isn't an exception. When ESD occurs, it can cause the device to reset or reboot due to the brief unexpected change in power.
Here are some suggestions to mitigate ESD issues that cause your circuit to restart:

  1. ESD protection components: Use Electrostatic Discharge (ESD) protection components such as ESD suppression diodes or Transient Voltage Suppression (TVS) diodes. They can be placed close to the input/output lines that are exposed to ESD strikes.
  2. Use of Filters: You can use Ferrite Beads or EMI filters on power supply lines to suppress unwanted interference, which might be causing a reboot.
  3. Power Supply Decoupling: Ensure good Power Supply decoupling near the chip. Consider having 100nF capacitors (like C14, C15, C16) placed as closely as possible to the power pins of the W5500 (U1) to filter out high-frequency noise on the power supply line. For larger transients, use bulk capacitors like C21, which has a value of 100uF.
  4. Optimizing PCB Layout: Keep the trace lengths of I/O lines and power lines as short as possible, and use proper grounding. Try to route sensitive signals and power traces away from potentially noisy ones.
  5. Handling and Environment: Be sure to follow ESD-safe handling procedures when working with the assembly. Use of ESD-protective work surface or mat, ESD-safe tools, protective packaging, and grounding are all essential when working with sensitive electronic components.
Remember to debug your board carefully to confirm that the ESD is indeed the cause of the problem, other reasons could include software bugs, power supply instability, or other issues.
Finally, the use of ESD protection and precautions could shift the issue from the chip level to a system level, where the entire system can handle ESD strikes without system resets or other malfunctions.
10mo
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4
why are the RSVD Pins connected trough a 10k resistor to ground and not direcly,...

@copilot why are the RSVD Pins connected trough a 10k resistor to ground and not direcly, like specified in the datasheet?
12d
Connecting reserved (RSVD) pins directly to ground, as typically recommended in datasheets, ensures the pins are held at a stable potential with minimal voltage drop, avoiding potential floating issues. However, using a resistor like 10kΩ adds flexibility, allowing for potential reconfiguration or debugging options, as it enables the possibility to slightly lift the pin potential if necessary without completely isolating it.
Here are some reasons for using a resistor instead of a direct connection:

  • Debugging/Testing: The resistor allows measuring the current or voltage across the pins without altering the circuit significantly.
  • Reconfigurability: If future design changes require connecting the RSVD pin to a different voltage level, the resistor allows for easier adjustments.
  • Safety Margin: The resistor offers protection against accidental short circuits or current surges, which might affect the pin or the rest of the circuit.
Nevertheless, it's crucial to consult the chipset's specific datasheet and reference designs to ensure that using resistors on RSVD pins doesn't conflict with the intended operation, as manufacturers usually have reserved pins configured for stability and predictability. Would you like assistance on any particular design aspect of the W5500 PoE project?
12d
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5
ACTLED
MISO
TDP
SCS
TCT
RDN
RDP
MISO
RDP
RCT
INT
RDN
SCS
INT
XO
MOSI
LINKLED
RCT
XO
TDN
TCT
TDN
SCS
TDP
LINKLED
RST
XI
SCLK
SCLK
RST
XI
MOSI
ACTLED
+3V3D
C24
Capacitance
100n F
+3V3
FB1
C4
Capacitance
10n F
+3V3A
+3V3D
C1
Capacitance
1n F
C8
Capacitance
100n F
+3V3A
+3V3A
+3V3A
+12V
C16
Capacitance
100n F
C18
Capacitance
18p F
C17
Capacitance
18p F
C9
Capacitance
10u F
+3V3D
C14
Capacitance
100n F
C11
Capacitance
10u F
+3V3D
+12V
+3V3A
C12
Capacitance
100n F
+3V3D
C3
Capacitance
6.8n F
+3V3
+12V
C15
Capacitance
100n F
C10
Capacitance
100n F
C2
Capacitance
6.8n F
C22
Capacitance
100n F
C13
Capacitance
100n F
C7
Capacitance
4.7u F
C23
Capacitance
100n F
C6
Capacitance
10n F
C20
Capacitance
10u F
+3V3D
C5
Capacitance
22n F
+12V
FB2
J3
R3
Resistance
33 Ω
H1
R9
Resistance
10k Ω
R4
Resistance
49.9 Ω
R8
Resistance
10k Ω
PWR
R7
Resistance
33 Ω
J2
R1
Resistance
1k Ω
U1
R10
Resistance
1k Ω
R5
Resistance
1k Ω
H2
R6
Resistance
12.4k Ω
H3
R2
Resistance
1k Ω
C21
Capacitance
10u F
J1
X1
Frequency
25M Hz
U2
D1
C19
Capacitance
100u F

W5500 PoE Project

W5500 PoE Project
Description

Created
August 1st 2023
Last updated by pjbutcher
a year ago
2 Contributor(s)
vasy_skral
pjbutcher

Controls

Availability & Pricing

DistributorQty 1
Digi-Key$3.17–$5.79
LCSC$4.26–$4.41
Mouser$14.23

Assets

    Thumbnail
  • thumbnail
    W5500 PoE Project-removebg-preview.png

    id=W5500 PoE Project-removebg-preview

Simulation

µs

Simulation Speed

@copilot why do I need ferrite bead between +3V3 and +3V3A?
@copilot why do I need ferrite bead between +3V3 and +3V3A?
9mo
Ferrite beads are often used in electronic circuits to filter out high frequency noise. In your project, the ferrite bead (FB2) between the two nets +3V3 and +3V3A serves this purpose. This might be necessary if one part of your circuit (connected to +3V3A) is highly sensitive or produces a lot of high-frequency noise that you don't want to propagate to the rest of your circuit (connected to +3V3).
Additionally, please note that FB2 may also act as a kind of "isolator" between two sections of the circuit in case of noise or voltage spikes, ensuring that disturbances in one section do not affect the other. In general, the use of a ferrite bead here is a common design practice to maintain the integrity and stable operation of the circuit.
However, remember that the effectiveness of this approach also depends on the properties of the ferrite bead used (its impedance characteristics over the frequency range) and the specific requirements of your circuit design. Keep in mind that while ferrite beads suppress high frequency noise, they also introduce a small amount of resistance into the power line, which is a trade-off you might have to consider.
9mo
list all ICs and the decoupling capacitors attached to each. Ensure to include a...
@copilot list all ICs and the decoupling capacitors attached to each. Ensure to include all ICs present in the design, including digital ICs, power converters, LDOs, etc. For every IC, clearly state: What power net the decoupling capacitors are attached to. The power rating of the attached decoupling capacitors. Signal with the expression “[WARNING]” if any of the following conditions are met: no decoupling capacitors are attached; the voltage of the power net is higher than the voltage rating of the capacitor; No voltage range was stated for the capacitor. Give a separate “[WARNING]” for each condition. Signal with the expression “[OK]” if none of those conditions are met
1y
Based on the project information provided:

  1. IC: W5500 (U1) Decoupling Capacitors: C13, C12, C10, C11 (attached to 3.3V power net). Power Rating of the Decoupling Capacitors: 100nF Voltage Rating: Not stated directly in the project components. Assuming usage in a standardized 0603 metric package, these capacitors are likely rated for voltages greater than 3.3V, but this should be confirmed. [WARNING] No voltage range was stated for the capacitor.
  2. IC: AMS1117-3.3 (U2) - (Voltage Regulator) Decoupling Capacitors: C21, C22 (attached to the 3.3V power net). Power rating of the attached decoupling capacitors: 100nF for C22 and 10uF for C21 Voltage Rating: Not stated directly in the project components. Assuming usage in a standardized 0603 and 1206 metric package, these capacitors are likely rated for voltages greater than 3.3V, but this should be confirmed. [WARNING] No voltage range was stated for the capacitor.
For the capacitors in the netlist, it is suggested to check and confirm their voltage rating from their respective datasheets to ensure safe operation. It is also recommended to check the power requirements of the Integrated Circuits (ICs) to determine if these capacitors provide sufficient decoupling.
1y
would firmware need to be written for this project?
@copilot would firmware need to be written for this project?
1y
Yes, firmware would likely be needed for your project. Firmware is the software that directly interfaces with your hardware, and it's typically necessary for any project that involves a microcontroller or a microprocessor. The firmware would be responsible for controlling the behavior of your hardware components and implementing the functionality of your device.
However, the specifics would depend on the details of your project. If you could provide more information about your project, I could give a more detailed answer.
Source(s):
1y
@copilot what voltage is this designed to provide via PoE?
1y
I'm sorry, but the provided datasheet excerpt does not contain information about the voltage provided via Power over Ethernet (PoE) for this part. Please provide the relevant datasheet excerpt or the part number so I can assist you better.
1y
how old are you?
@copilot how old are you?
1y
As an AI, Flux Copilot doesn't have a specific age. It was launched as part of the Flux.ai platform to assist users in designing electronic circuit schematics and PCB layouts. It's continuously updated and improved based on user interactions and feedback.
Source(s):
1y
can you please help me with a short(100-200 symbols) description for this projec...
@copilot can you please help me with a short(100-200 symbols) description for this project?
1y
I’m having trouble responding because something went wrong on my end. Sorry about that.
1y
what power consumption of U1?
@copilot what power consumption of U1?
1y
The W5500 chip (U1 in your project) is a hardwired TCP/IP embedded Ethernet controller that provides easier Internet connection to embedded systems.
According to the W5500 datasheet, the typical power consumption of the chip is 160mA when operating at 3.3V at 25°C, and the chip can work in power down mode which reduces the current consumption to 20μA.
Please note that these are typical values, and the actual power consumption can vary depending on the networking conditions such as data rate, packet size, and the operating frequency of the chip.
Here is the link to the datasheet for your reference: W5500 Datasheet
1y
can you write me a short(100-200 symbols) description for this project
@copilot can you write me a short(100-200 symbols) description for this project
1y
I’m having trouble responding because something went wrong on my end. Sorry about that.
1y
Hey, I’m Copilot, your AI design assistant. I can help you brainstorm ideas, deb...
Hey, I’m Copilot, your AI design assistant. I can help you brainstorm ideas, debug problems, research components, and even make wiring connections for you. Ask me questions like:

  • @copilot I'm designing a PCB for a medical device that measures heart rate and temperature. Can you give me the list of components I will need?
  • @copilot How would I connect these parts to make the LED flash at 1kHz?
  • @copilot can you choose 4 digital pins on the ATMega328P-AU that I have here to use as GPIO given that I am already using some pins for reset, the external clock, UART, and I2C.
Chat with me by tagging @copilot on comments or in the chat.
1y
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