Schematic for Block Diagram Review Demo: The "Green Dot 2040E5"...

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here's a plot of the charging profile of U2. What charging phase would it be in ...

nico

@copilot here's a plot of the charging profile of U2. What charging phase would it be in at 3.2V https://storage.googleapis.com/flux-comment-files/files/commentFileId-09b2f4ef75058b707dfd3db2e7c982f02228902d2962f84d0b2b3f65a62920da.png?GoogleAccessId=graviton-mvp%40appspot.gserviceaccount.com&Expires=4856759834&Signature=acjVFMmkhKN9JXLvxy2NVr2B5PIwYzUcm6tdvnLFVTKNgk3D3rgs6FO9GFMeeYhEx8%2BUoVE%2Bp2s5svHnYN%2F3wrmiDRdatCiu7THAT81JHeFG%2B5%2F%2FJV1gy1bCEMSWuL9tF2kNW%2B6YDLeWLGGT2O2hNrwUoK%2Fa88x1%2BfGRBEiLISVfigNnkKgS77f3e%2BtAy8oHqEPMz8PEyi%2BRvbjmtsm4o8cA2gJIzY5CD7WjbsSjOaZe1Zph7FajMg93XDzDGbbEdUHU3h75KZsv0BWQgkhgzZg3vmc31Qlo%2FxQtF%2FRUyBqP8kbNtW%2BzvMqEKsRGMDj3O6KWNc3FckOl1FrD1bFI9Q%3D%3D

copilot

Based on the charging profile chart provided, at 3.2V the battery would be in the "Constant Current Phase" of charging. This phase comes after the Precharge Phase (which occurs below 3V in this case) and continues until the battery voltage reaches 4.2V, at which point it transitions to the "Constant Voltage Phase."

list all ICs and the decoupling capacitors attached to each. Ensure to include a...

nico

@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. What is the stated voltage of that net.
The voltage rating and value 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
Express the result in a markdown-formatted table

copilot

Here's a summary of the ICs in your design and their associated decoupling capacitors:

Table

IC	Power Net	Net Voltage	Cap MPN	Cap Value	Cap Voltage Rating	Notes
U6 (102010428)	+3V3	+3.3V	GRM188R61A106KE69D	10u	10V	[OK]
U3 (SY6280AAAC)	+3V3	+3.3V	GRM188R61A106KE69D	10u	10V	[OK]
U1 (RT8059GJ5)	VBAT	Battery voltage (assumed less than 5V)	GRM188R61A106KE69D	10u	10V	[OK]
U2 (CN3063)	VBAT	Battery voltage (assumed less than 5V)	GRM188R71H104KA93D	100n	50V	[OK]
IC1 (MT3608L)	VBAT	Battery voltage (assumed less than 5V)	GRM188R60J226MEA0D	22u	6.3V	[WARNING – The voltage of the power net may exceed the voltage rating of the capacitor if the battery voltage goes over 6.3V]
IC2 (SP3481CN-L/TR)	+3V3	+3.3V	GRM188R61A106KE69D	10u	10V	[OK]

I assumed that the voltage of the VBAT net is less than 5V, which is a common range for Li-ion batteries. If the battery voltage exceeds 5V, you may need to replace the decoupling capacitors of U1 and IC1 with capacitors rated for a higher voltage to prevent excessive voltage stresses. Be sure to confirm the maximum and normal operating conditions of your battery and all components connected to the VBAT net. You can correct this assumption if it is not valid for your design.

Capacitor part numbers, values, and voltage ratings are based on the provided components and their datasheets. While U4 (317990687) is an IC in your design, there is no explicit information in the project text regarding its decoupling capacitors.

Remember to locate the decoupling capacitor as close to the supply pin of the IC as appropriate to maximize their effectiveness. In addition, double-check the footprint and package compatibility of your selected capacitors with your PCB layout.

Check that all reset/enable have an external pull-up or pull-down resistors. Rep...

nico

@copilot Check that all reset/enable have an external pull-up or pull-down resistors. Report action items in an ordered list.

copilot

The following designators are associated with reset/enable in this project: NRST, ENABLE, U2, and SW1. I'll check each of them for a pull-up or pull-down resistor.

Designator: NRST
- This net is connected to a reset pin of component U4.
- According to the schematic, there is a pull-up resistor (R18) connected to NRST. No action is required for NRST.
Designator: ENABLE
- This net is connected to the control pins DE and RE of the RS485 transceiver IC2.
- I don't see any pull-up or pull-down resistor connection for the ENABLE net in the schematic provided. Action: Add either a pull-up or pull-down resistor to the ENABLE net depending on the RS485 transceiver IC2 input requirements.
Designator: U2
- U2 has the pins ~DONE, ~CHARG, and EN which are output, output, and input respectively.
- The ~DONE pin doesn't need a pull-up or pull-down resistor because it's an output.
- The ~CHARG pin is also listed as an output, so it doesn't need a pull-up or pull-down resistor.
- The EN pin is being directly driven from the power supply it doesn't have a pull-up or pull-down resistor. This is okay if this input to the IC is expected to always be the same as the supply voltage, otherwise, action could be needed here.
Designator: SW1
- It looks like SW1 is an input, with its state determined by associated resistors R1 and R9. R1 could act as a pull-down when SW1 is open, and R9 could act as a pull-up when SW1 is closed. At a glance, it seems like this setup is appropriate for SW1. No action required for SW1.

Please bear in mind that without full knowledge of all project requirements and the behavior of all components used, these recommendations are given based on the best practices and common uses of these components and may not match the intended design. Therefore, it is always advisable to double-check these aspects with a detailed inspection or simulation.

C11

Capacitance

4u7 F

R11

Resistance

22 Ω

R18

Resistance

22 Ω

Reviews

Electrical Rule Checks

Missing Footprints

Reports parts that have no footprint.

Design Rule Checks

Overlapping Copper • 8

Des	Net	Des	Net
nicotest2:P2	Net 3	nicotest2:P1	Net 7
Trace febc	Net 3	nicotest2:P1	Net 7
U4:RST	Net 19	Trace c0c0	Net 25
U4:RST	Net 19	Trace d0cb	Net 25
Trace 6dae	Net 25	R18:P2	Net 19
Trace 4083	Net 25	R18:P2	Net 19
Trace 0f48	Net 28	J2:SIGNAL	None
Trace 29d3	Net 28	J2:SIGNAL	None

Invalid Layer

Reports nodes that are assigned to a layer that doesn't exist in the layout stackup.

Component Overrides • 36

	Designator	Ruleset
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊

Airwires • 6

	Designators	Net
	R5:P1, U3:GND	GND
	Via-5-15:Via-5-15, nicotest2:OUT	GND
	Via-Island-11:Via-Island-11, IC1:GND	GND
	Trace fb0e:Trace fb0e, nicotest2:Trace febc	Net 14
	U4:RST, R18:P2	Net 19
	IC2:DE, IC2:～RE～	Net 32

Deprecated Rules

Reports nodes that are using rules that are not supported anymore.

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 • 1

	Name
	Trace 4083, Trace c0c0, Trace d0cb, Trace 6dae

Protected Intrusions

Reports intrusions from objects of other nets into polygons or fills that have the Protected layout rule applied.

Manufacturing

Manufacturer Part Number • 17

	Designator	MPN
	nicotest	None
	C12	None
	J6	None
	R1	None
	R4	None
	R8	None
	R10	None
	R11	None
	R12	None
	R13	None
	R14	None
	R15	None
	R16	None
	R17	None
	R18	None
	SW1	None
	SW2	None

Parts Available

Beta

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System Checks

Auto-Layout

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Passive Components

Resistor Power Rating

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Pull Up/Pull Down Presence

Beta

Checks that IC pins that require pull up or pull down resistors have them.

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Capacitor Voltage Rating

Beta

Checks that capacitors have appropriate voltage ratings to prevent overheating and ensure reliable circuit operation.

Ground
A common return path for electric current. Commonly known as ground.
jharwinbarrozo
20.5M
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
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
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
jharwinbarrozo
1.5M
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 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 #CommonPartsLibrary
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1.5M
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
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15.1k
Terminal
An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
natarius
RMCF0805JT47K0
47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film #forLedBlink
jharwinbarrozo
1.2M
875105359001
10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcan
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1.2M
CTL1206FYW1T
Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlink
jharwinbarrozo
1.1M

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Block Diagram Review Demo

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Distributor		Qty 1
	Digi-Key	$16.16–$17.88
	LCSC	$29.70–$31.42
	Mouser	$19.22–$19.70

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