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Explain this project in detail. Describe its purpose, core components, and how they interact. Break down the design, implementation, and functionality step by step. Highlight key technologies, dependencies, and design choices, including trade-offs and optimizations. Discuss potential challenges, performance considerations, and real-world applications. If applicable, suggest areas for improvement, scalability, and future enhancements.
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223d 11:32:29
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Z1
Z3
Z4
Z2
Make it so battery will rarely need to be pulled out to turn off load. A switch?
Make it so battery will rarely need to be pulled out to turn off load. A switch?
2y
6
Make fuses easier to swap
Make fuses easier to swap
2y
5
How do I size my TVS diode? I am using a lipo battery connector.
How do i calculate the peak pulse current from a voltage spike?
2y
2y
When sizing a TVS diode, you need to consider the following parameters:
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Working Voltage (VWM): The TVS diode should be selected such that its working voltage is slightly above the maximum expected operating voltage. For a LiPo battery, this would be the maximum voltage the battery can output.
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Breakdown Voltage (VBR): The breakdown voltage should be above the maximum system operating voltage so the TVS diode does not conduct under normal operating conditions.
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Clamping Voltage (VC): This is the voltage at which the diode will start to conduct significant current to clamp the voltage spike. It should be less than the maximum voltage that your circuit can withstand without damage.
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Peak Pulse Current (IPP): This is the maximum current that the TVS diode can safely conduct in the event of a voltage spike. It should be higher than the current that would result from a voltage spike at the clamping voltage.
Here is a step-by-step procedure to size a TVS diode:
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Identify the maximum operating voltage of your system (for a LiPo battery, this might be 4.2V, for example).
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Choose a TVS diode with a Working Voltage (VWM) slightly above this value.
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Identify the maximum voltage that your circuit can tolerate without damage.
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Choose a TVS diode with a Clamping Voltage (VC) below this value.
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Calculate the potential current from a voltage spike using Ohm's Law (I = V/R), where V is the voltage spike and R is the impedance of the circuit.
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Choose a TVS diode that can handle this current (i.e., its Peak Pulse Current, IPP, is higher than the calculated current).
Remember, datasheets for TVS diodes will provide you with these specifications. Also, note that the exact TVS diode you choose will depend on your specific circuit and its tolerance for voltage variations.
2y
how do i calculate the peak pulse current from a voltage spike
2y
The peak pulse current (IPP) resulting from a voltage spike can be calculated using Ohm's Law. Here's how you do it:
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Identify the voltage of the spike (VS): This is the maximum unexpected voltage that could occur in your system.
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Determine the total impedance of the circuit (Z): This is the total resistance to current flow in your circuit when the voltage spike occurs. It includes the resistance of the circuit components and the inherent impedance of the power supply and connections.
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Calculate the peak pulse current: Use Ohm's Law to calculate the current. Ohm's Law states that the current (I) is equal to the voltage (V) divided by the resistance (R). Therefore, the peak pulse current (IPP) is calculated as follows:[ IPP = \frac{VS}{Z} ]
Please note that this is a simplification. In reality, the impedance Z may vary with the applied voltage, especially if the circuit includes non-linear components like diodes or transistors. In such cases, determining Z might require more complex analysis or simulation.
2y
4
SW1
Note 2
Line 1
Battery In
B-
R12
Resistance
1k Ω
B+
R4
Resistance
1k Ω
D4
JP2
R11
Resistance
1.2k Ω
VIN_MCU
U1
USB
Rprog
U4
Note 6
Line 1
Charge rate setting, bodge to set
R9
Resistance
5k Ω
R5
Resistance
10k Ω
JP1
R10
Resistance
2k Ω
J5
Rprog
JP4
+5V
+5V
C3
Capacitance
10u F
Text Note 4
Line 1
DW01A Battery Protection Circuit
DONE
J4
C2
Capacitance
10u F
R2
Resistance
100 Ω
U5
JP3
F1
B+
C1
Capacitance
100n F
Note 3
Line 1
TP4056 Charge circuit
J1
+5V
Note 4
Line 1
Standoffs for the Lipo
Reviews
Electrical Rule Checks
Missing Footprints
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Design Rule Checks
Overlapping Copper
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Component Overrides • 59
Designator | Ruleset | |
|---|---|---|
Airwires • 4
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Layers with Multiple Fills
Reports layers that have multiple copper fills of different nets. Make sure the Connected Layers rule value of nets with fills is valid.
Floating Copper
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System Checks
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Passive Components
Resistor Power Rating
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Learn morePull Up/Pull Down Presence
BetaChecks that IC pins that require pull up or pull down resistors have them.
Learn moreCapacitor Voltage Rating
BetaChecks that capacitors have appropriate voltage ratings to prevent overheating and ensure reliable circuit operation.
- Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portaljharwinbarrozo43.0M
- 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 #powerjharwinbarrozo11.4M
- 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 #CommonPartsLibraryjharwinbarrozo1.5M
- 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 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 1600pF 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 #CommonPartsLibraryjharwinbarrozo1.5M
- 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 #genericsjharwinbarrozo15.1k
- An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.Terminal
- 47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film #forLedBlinkjharwinbarrozo1.2M
- 10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcanjharwinbarrozo1.2M
- Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlinkjharwinbarrozo1.1M
Inspect
Lipo Charger Shield for Arduino Uno R3 Clone Rev 2
Controls
Properties
Availability & Pricing
| Distributor | Qty 1 | |
|---|---|---|
| Digi-Key | $2.34–$6.48 | |
| LCSC | $1.65–$3.51 | |
| Mouser | $5.88 | |
Assets
lipochargerqrcode.svgid=lipochargerqrcode
- Arduino UNO.STEP
id=Arduino UNO 3D
- PXL_20230807_010845821.MP-removebg-preview.png
id=PXL_20230807_010845821.MP-removebg-preview
- Arduino UNO R3 shield - Shape.dxf
id=Arduino UNO R3 shield - Shape
3600_3_09.svgid=3600_3_09
- Arduino_UNO_R3_Tumb.svg
id=Arduino_UNO_R3_Tumb
3d Model
Thumbnail
Default
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