Schematic for PaymentSoundBox: 5V Boosted MAX98357A Audio with...

Duplikasi Label TVS1

flux

1:55

General

Chat History

Project

BOM

Knowledge Base

Review (ERC/DRC)

Schematic

TVS1

Accessed Knowledge (7)

Using Knowledge Base Tool.

Using Schematic Tool.

Using BOM Tool.

Using Review (ERC/DRC) Tool.

Executing various tool calls.

Reviewing CC pull-downs and resistors.

Identifying schematic inconsistencies.

Reviewing decoupling and connections.

Identifying critical component issues.

Reviewing component issues and recommendations.

Berikut hasil cek ringkas: masih ada kekurangan komponen penting dan sedikit redundansi/inkonsistensi. Detail temuan saya berbasis skematik, BOM, dan DRC/ERC saat ini.

Apa yang hilang/kritis

Catu 3.3 V (buck): Jalur 3V3 belum benar-benar “ada” secara komponen. Net 3V3 hanya memuat C2, dan “Net 1” hanya ke U1. Belum ada IC buck, induktor, input/output caps, atau jaringan umpan balik. (Per catatan proyek, induktor wajib 2.2 µH untuk TPS62162.)
Catu 5 V (boost) untuk audio: Hanya ada bulk C1 yang diberi peran “boost VOUT”. Modul boost, induktor, diode/rectifier (bila non-synchronous), input cap, dan pembagi umpan balik belum ada. Portal “SW2 2 - U6 EN” ada, tetapi IC [U6] belum ada di BOM.
Charger Li-ion U4 (BQ24075): Komponen pendukung krusial belum tampil di BOM/Net:
- Resistor ISET (program arus charge) dan resistor ILIM (batas arus input) tidak ada; pin U4 saat ini terdaftar di net GND. Wajib dipasang sesuai datasheet.
- Kapasitor TMR untuk safety timer, serta strap ~CE/EN1/EN2/SYSOFF juga belum terlihat.
USB 2.0 datapath:
- Hanya ada satu resistor seri data: R2 (22 Ω) untuk D−. Resistor seri D+ (22 Ω) belum ada; tambahkan pasangan untuk simetris.
- CC pin: J1 saat ini masuk net GND langsung. Seharusnya pakai 56 kΩ pull-down ke GND, bukan short langsung.
- Proteksi ESD sudah ada: TVS1 (D+/D−) dan TVS2 (VBUS).
I2S amplifier U3 (MAX98357A): Decoupling/bulk untuk rail suplai terlihat di C3 dan C4, namun pastikan nilainya dan penempatan mengikuti datasheet; suplai 5 V perlu benar-benar tersedia (lihat poin boost di atas).
ESP32 U1: Pastikan pull-up EN dan strap boot (IO0/IO2) sesuai referensi modul. Saat ini net GND mencantumkan EN, ini perlu dicek karena EN tidak boleh diikat ke GND.
SPI Flash U2: Cek penanganan WP#/HOLD# dan decoupling. Hanya C2 yang terlihat; biasanya butuh 0.1 µF dekat VCC dan satu bulk kecil di rail. WP#/HOLD# umumnya ditarik ke level idle sesuai datasheet.

Redundansi/inkonsistensi yang perlu dibersihkan

Duplikasi Net Portal di pad TVS1 A2: [R19 P1 - D2 A2](R19 P1 - D2 A2) dan [J1 D-_B - TVS1 A2](J1 D-_B - TVS1 A2). Sisakan satu yang konsisten.
LED jalur status: D1 ada, R1 330 Ω ada, tetapi koneksinya di net tampak tidak wajar (R1 kedua pad muncul di GND). Perlu dicek ulang wiring LED.
Banyak “Net Portal” historis yang masih tertinggal dan membuat label ganda.

Hasil DRC/ERC/BOM yang relevan

DRC: Masih banyak airwire (USB, I2S, SPI, speaker), dan beberapa “Overlapping Copper”. Layout belum final.
Manufacturing check: Banyak part generik tanpa MPN (semua C1, C2, C3, C4, C5, R2, R3, R4, mounting holes) — perlu diganti ke part nyata sebelum produksi.
Net 3V3 dan “Net 1” terisolasi: distribusi 3.3 V ke beban belum terbentuk karena tidak ada sumber regulasi 3.3 V yang nyata.

Ringkas tindakan selanjutnya

Lengkapi power:
- Tambah regulator buck 3.3 V + induktor 2.2 µH, input/output caps, dan jaringan FB (sesuai datasheet).
- Tambah modul boost 5 V untuk audio (IC, induktor, diode/rectifier bila perlu, input/output caps, FB).
Lengkapi charger BQ24075:
- Pasang resistor ISET dan ILIM yang benar, kapasitor TMR, dan strap ~CE/EN1/EN2/SYSOFF sesuai kebutuhan.
Rapikan USB:
- Tambah resistor seri 22 Ω untuk D+ (pendamping R2), perbaiki CC1/CC2 menjadi 56 kΩ pull-down (bukan langsung ke GND), hapus portal duplikat di TVS1.
Decoupling:
- Pastikan setiap IC (U1, U2, U3, U4) punya 0.1 µF dekat pin Vcc/Vdd dan bulk yang memadai. Ikuti angka persis dari datasheet; tegangan kerja kapasitor ≤ 60% dari ratingnya.
Strap dan LED:
- Verifikasi strap boot ESP32 (EN/IO0/IO2) dan wiring LED D1-R1.
Ganti part generik ke MPN nyata, lalu rerun DRC.

Kalau Anda mau, saya bisa susun checklist penambahan komponen spesifik (buck 3.3 V, boost 5 V, resistor ISET/ILIM/TMR, resistor seri D+, dua 56 kΩ untuk CC) dan mulai menambahkan satu per satu di skematik.

52 days

Ready.

SW2

SW1

U5 VOS - U1 3V3

SW2 2 - U6 EN

U5 VOS - U1 3V3

SW1 1 - U1 IO34

Reviews

Electrical Rule Checks

Missing Footprints

Reports parts that have no footprint.

Design Rule Checks

Overlapping Copper • 10

Des	Net	Des	Net
M1 Mounting Hole:～	GND	M1 Mounting Hole:Pad	None
M1 Mounting Hole:～	GND	Via	None
M1 Mounting Hole:～	GND	Via	None
M1 Mounting Hole:～	GND	Via	None
M1 Mounting Hole:～	GND	Via	None
M1 Mounting Hole:～	GND	Via	None
Trace 060e	SPI_MISO	U2:NC	None
Via	None	M1 Mounting Hole:～	GND
Via	None	M1 Mounting Hole:～	GND
Via	None	M1 Mounting Hole:～	GND

Invalid Layer

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

Component Overrides • 9

	Designator	Ruleset
	U2:NC	Override rule for NC
	U2:NC	Override rule for NC
	U2:NC	Override rule for NC
	U2:NC	Override rule for NC
	U2:NC	Override rule for NC
	U2:NC	Override rule for NC
	U2:NC	Override rule for NC
	U2:NC	Override rule for NC
	＊｀REF｀＊	Override rule for ＊｀REF｀＊

Airwires • 30

	Designators	Net
	J1:CC1, J1:CC2	GND
	J1:CC1, J1:GND	GND
	J1:GND__2, J1:GND__1	GND
	J1:GND__3, J1:GND	GND
	SW1:2, M1 Mounting Hole:～	GND
	U3:GAIN_SLOT, U3:GND_3	GND
	U3:GND_1, U3:GAIN_SLOT	GND
	U3:VDD_2, U3:GND_2	GND
	U3:VDD_2, U3:VDD_1	GND
	U4:～CHG, U4:VSS	GND
	U4:BAT, U4:BAT	GND
	U4:BAT, U4:ISET	GND
	U4:VSS, U4:BAT	GND
	U1:IO26, U3:BCLK	I2S_BCLK
	U1:IO22, U3:DIN	I2S_DIN
	U1:IO25, U3:LRCLK	I2S_LRCLK
	U1:IO18, U2:CLK	SPI_CLK
	U1:IO5, U2:～{CS}	SPI_CS
	Trace c507:Trace c507, Trace bdaf:Trace bdaf	SPI_MISO
	U1:IO23, U2:DI(IO0)	SPI_MOSI
	U3:OUTN, J4:P2	SPK_OUTN
	U3:OUTP, J4:P1	SPK_OUTP
	TVS1:A1, J1:D+_B	STATUS_LED
	R4:P1, U4:TS	TS
	TVS1:A2, J1:D-_B	USB_D-
	J1:VBUS__2, J1:VBUS__1	USB_VBUS
	J1:VBUS__2, J1:VBUS__3	USB_VBUS
	J1:VBUS__3, J1:VBUS	USB_VBUS
	U4:IN, J1:VBUS	USB_VBUS
	U4:IN, TVS2:C	USB_VBUS

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

Detect any via, trace or copper fill island that is not connected to any net.

Protected Intrusions

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

Manufacturing

Manufacturer Part Number • 10

	Designator	MPN
	M2 Mounting Hole	None
	M1 Mounting Hole	None
	C1	None
	C2	None
	C3	None
	C4	None
	C5	None
	R2	None
	R3	None
	R4	None

Parts Available

Beta

Checks that all parts have a part number and are available from distributors.

System Checks

Auto-Layout

Beta

Reports issues with Auto-Layout if Flux cannot route something or must ignore a configuration.

Passive Components

Resistor Power Rating

Beta

Checks that the power traveling across a given resistor is under its rating with 50% headroom.

Learn more

Pull Up/Pull Down Presence

Beta

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

Learn more

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
jharwinbarrozo
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
jharwinbarrozo
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
jharwinbarrozo
1.2M
CTL1206FYW1T
Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlink
jharwinbarrozo
1.1M

Inspect

PaymentSoundBox

Controls

Properties

U5:keepout

Power Trace Widths: SPK (Top)

Net Class 3V3 Preferred Width

Factory Reset Debounce Cap

U5:footprint

Audit Removal List

Speaker Power Rating

Via Stitching

Duplicate Net Portals Mapping

Net Class 3V3 Min Width

Net 1 Note

Primary MCU

SW2:keepout

Wireless Protocols

Controlled Impedance Pair

USB ESD Protection Spec

duplicateNetPortalsList

Power Trace Widths: VSYS (Top)

floating_1

A2:SilkscreenOutlineRotation

GND Via Checklist

U3:keepout

designator_issues

Speaker Resistance

Audio Subsystem

Initial ERC Warnings

DesignConstraints

USB Routing Constraints

floating_2

Battery Nominal Voltage

Use Case

Power Trace Widths: 3.3V (Top)

netportal_issues

DRC Results

GND Layout Guidance

U4:keepout

Raw GND Pad Coordinates

Power Stage Routing Constraints

Power Trace Widths

Power Source

A2:SilkscreenTextRotation

Switching Regulator Inductor Check

Layout Validation Notes

Airwire Status

U4:clearance

ERC_review_results

ERC GND Verification

ERC Results

duplicateComponentsList

Overlapping Copper Blockers

U3:clearance

U5:clearance

3V3 Rail Integrity

Change Log

Updated power path so USB_VBUS from the USB-C receptacle (U4) feeds J1_USB_C:IN, and J1_USB_C:OUT now drives the buck input (U5:VIN) and input cap C2, with U5:VOS exclusively defining the 3V3 rail (no longer shorted to GND); unified the 3V3 rail across U1:3V3, U2:VCC, U3:VDD_1/VDD_2 and their decouplers (C4, C6, C7, C8). Corrected USB-C CC implementation by tying CC1 and CC2 to GND via R1/R2 (56 kΩ pull-downs). Completed USB data protection by inserting series 22 Ω resistors (R18 on D+, R19 on D−) between U4:D+_B/D−_B and the TVS diode D2, with D2:A1 on D+, D2:A2 on D−, and D2:common to GND, satisfying the <1 pF line-capacitance requirement. Unified SPI nets between ESP32 (U1) and W25Q256 (U2) as MOSI, MISO, CLK, CS and wired IO23↔DI(IO0), IO19↔DO(IO1), IO18↔CLK, IO5↔~CS. Unified I2S nets between ESP32 (U1) and MAX98357A (U3) as DIN, BCLK, LRCLK and wired IO22↔DIN, IO26↔BCLK, IO25↔LRCLK. Removed large numbers of duplicate/unused net portals (especially U5 VOS–U1 3V3 and various test portals) and standardized key net labels (3V3, USB_D+, USB_D−, USB_VBUS, GND). Re-ran ERC and resolved connectivity issues so that no errors remain on power, USB, SPI, or I2S nets.

System Architecture

Raw GND Pad Coordinates: J1 SHIELD

airwire_2

Factory Reset Pin

ESP32 Deep Sleep Current

Final ERC Warnings

TVS1 common pad name

VBUS TVS Spec

Override Inventory

DRC Status

Ground plane layer

Airwire Status: SW Net

Battery Notes

Role Details

RemovedComponents

Stackup

Amplifier Headroom Note

SW1:keepout

Battery Endurance

airwire_1

R18:clearance

Raw GND Pad Coordinates

rename_cleanup_complete

Buck Stage ERC Status

Antenna keep-out zones

J3_pin_mapping

Switching Regulator Filter Warning

Factory Reset Pull-up

kΩ

Amplifier Deep Sleep Current

Global Clearance

R18:keepout

Battery Capacity

mAh

Remaining Airwires

DRC GND Verification

U1:keepout

U1:clearance

Design Documentation

Project Description

ERC/DRC USB/3V3/TS Verification

Battery Energy

Availability & Pricing

Distributor		Qty 1
	Arrow	$4.81–$5.22
	Digi-Key	$6.04–$8.09
	LCSC	$11.12
	Mouser	$9.02
	TME	$3.95
	Verical	$3.49–$12.71

Assets

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