Schematic Design Issue Analysis

flux

1:27

Below are several specific issues observed in your schematic along with recommended corrective actions:
  1. Airwire/Connectivity Errors:
    • Several airwire errors were reported (for example, “C6:2, U3:2”, “U4:4, D2:1”, and “D5:1, D2:1”).
      Recommendation: Check the pin–net assignments for these components. Verify that each pad is connected to the intended net; for example, confirm that the GND pin of U3 and pad 2 of C6 are both following a common ground scheme and not isolated by routing or via errors. Similarly, review the connection from U4 pin 4 and the LED D2 to ensure they share a proper, intended voltage node.
  2. Decoupling and Bypass Considerations:
    • Although several capacitors are present (for instance, multiple 10 µF or 100 nF devices), it is not clear that every IC power pin has an immediate bypass capacitor.
      Recommendation: For sensitive ICs (U1 and U3 in particular), place one decoupling capacitor as close as possible to each power pin (both VIN and VOUT/EN as applicable) to minimize the loop area. Revisit the datasheets to verify that the capacitor type and voltage rating are suitable for the expected supply levels.
  3. LED Current Limiting:
    • The schematic includes LED devices (D5 and D2) without any obvious series resistor protection. Driving LEDs directly can lead to overcurrent conditions.
      Recommendation: Add appropriate current limiting resistors in series with each LED. Calculate the resistor values based on the supply voltage, LED forward voltage, and desired current (typically around 20 mA).
  4. Net Labeling and Functional Grouping:
    • Some nets (for example, the “VIN” net) include mixed function signals such as power enable pins, feedback nodes, and resistor dividers. This can complicate troubleshooting and may risk unintentional connections.
      Recommendation: Rename or split nets where appropriate to clearly indicate their function. For instance, separate the voltage-sense (feedback) node from the raw input voltage if they are not meant to be directly connected.
  5. Feedback and Voltage Divider Integrity at the Regulator:
    • The divider on the feedback pin of U1 (formed by R3 and R7) needs a careful review. Although the resistor values appear to set a divider, confirm that the ratio is correct for the desired output voltage and matches the regulator’s requirements.
      Recommendation: Revisit the regulator’s datasheet to confirm the proper resistor ratio and verify that each connection (including the routing of the divider to ground and the feedback pin) is properly maintained.
  6. Miscellaneous Component and Footprint Checks:
    • Some components (such as generic resistor and capacitor parts) share footprints that may not exactly reflect their intended electrical ratings in the context of a power management board.
      Recommendation: Double-check that every component’s pin assignments and footprint match the manufacturer’s datasheet (especially for integrated circuits like U1 and U3). Ensure that any necessary labeling for signal integrity (such as pull-ups on open-drain outputs) is explicitly added where needed.
  7. Ground and Power Portal Usage:
    • Multiple instances of “Power Net Portal” (used for VBAT, VSOLAR, VUSB, etc.) appear. While these objects can simplify schematic connectivity, they also open up the possibility of inadvertently connecting dissimilar power sources or creating an unclear ground reference.
      Recommendation: Verify that each power portal is used consistently and belongs only to its intended power domain. Where two different supply types are involved, consider isolating their distribution paths and clearly labeling nets to avoid misconnection.
Summary:
  • Airwire issues signal that some pins (for example, on [U3], [U4], [D2], and [C6]) are not reliably connected—double-check net assignments and solder-bridge candidates.
  • Decoupling needs require you to ensure every IC has a dedicated capacitor placed as near as possible to its power pins.
  • LED circuits must incorporate current-limiting resistors.
  • Net naming and function separation can help avoid mixing signal roles (especially on the “VIN” net) and improve troubleshooting.
  • Feedback divider validation (for [U1]) should be rechecked against the regulator’s application recommendations.
  • Component footprint and assignment reviews are necessary to ensure that parts are correctly represented in the design.
  • Finally, use of power portal objects must be consistent to avoid cross-connecting separate power domains.
Addressing these specific issues should enhance the circuit’s electrical integrity, aid signal integrity, and meet best practices in schematic design.
Rename power nets
Add LED resistors
Improve decoupling placement
Investigate connectivity errors
337 days

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J3
C1
Capacitance
10uF
R9
Resistance
20kΩ
R8
Resistance
2kΩ
R7
Resistance
15kΩ
R6
Resistance
150kΩ
C4
Capacitance
4u7 F
R1
Resistance
3kΩ
C2
Capacitance
10uF
C3
Capacitance
100nF
C8
Capacitance
68pF
R4
Resistance
4k7 Ω
C10
Capacitance
22uF
C9
Capacitance
100nF
R3
Resistance
68kΩ
C7
Capacitance
22uF
C6
Capacitance
100nF
C5
Capacitance
10uF
IC1
U4
L1
Inductance
10uH
D1
VSOLAR
VUSB
VBAT
+3V3
D4
VBAT
+3V3
VBAT
VSOLAR
D3
VUSB
L2
Inductance
2u2 H
12_5V
J1
D5
Color
Red
ISET
SW1
D2
Color
Green
J4
J2
U1
U3
  • Ground
    Ground
    A common return path for electric current. Commonly known as ground.
    jharwinbarrozo
    20.5M
  • Net Portal
    Net Portal
    Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
    jharwinbarrozo
    43.0M
  • Power Net Portal
    Power Net Portal
    Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #power
    jharwinbarrozo
    11.4M
  • Generic Resistor
    Generic Resistor
    A generic fixed resistor ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #generics #CommonPartsLibrary
    jharwinbarrozo
    1.5M
  • Generic Capacitor
    Generic Capacitor
    A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. 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, 10000uF 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, 1600pF 1.8pF, 18pF, 180pF, 1800pF 2.0pF, 20pF, 200pF, 2000pF 2.2pF, 22pF, 220pF, 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
    jharwinbarrozo
    1.5M
  • Generic Inductor
    Generic Inductor
    A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibrary
    jharwinbarrozo
    15.7k
  • Terminal
    Terminal
    An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
    natarius
  • RMCF0805JT47K0
    RMCF0805JT47K0
    47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film #forLedBlink
    jharwinbarrozo
    1.2M
  • 875105359001
    875105359001
    10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcan
    jharwinbarrozo
    1.2M
  • CTL1206FYW1T
    CTL1206FYW1T
    Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlink
    jharwinbarrozo
    1.1M

BRAVE POWER MANAGEMENT BOARD

BRAVE POWER MANAGEMENT BOARD thumbnail
Brave is a versatile and efficient power board that can provide 12v, 5v and 3.3v outputs for various applications. It can be powered by battery or solar panel, and the battery can be recharged by solar energy. It can also be powered by a USB port if needed. This board is ideal for IoT projects that require reliable and stable power supply in different environments. #IoT #power #management #usb

Properties

Properties describe core aspects of the project.

Pricing & Availability

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Qty 1

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$0.74–$2.41

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$0.72–$2.70

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$1.53–$2.73

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$2.92–$3.61

Verical

$0.46–$1.91

Controls