Schematic Simplification Request
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Looking for "Peak current consumption Wi-Fi transmit (TX), receive (RX), and overall peaks" in esp32-wroom-32e_esp32-wroom-32ue_datasheet_en.pdf
Looking for "Maximum output current rating" in Diodes Incorporated
Looking for "Dropout voltage at 300 mA and 600 mA for 3.3V version" in Diodes Incorporated
Looking for "Quiescent current (no load) and ground pin current vs load" in Diodes Incorporated
Looking for "Recommended input and output capacitor values and ESR requirements" in Diodes Incorporated
Looking for "Input voltage operating range" in Diodes Incorporated
Looking for "PSRR at 100 kHz and 1 MHz" in Diodes Incorporated
Looking for "Current limit / short circuit protection specification" in Diodes Incorporated
Looking for "Maximum output current rating for AP2112K-3.3" in AP2112.pdf
Looking for "Dropout voltage for AP2112K at 600mA and 300mA" in AP2112.pdf
Looking for "Quiescent current IQ of AP2112K" in AP2112.pdf
Looking for "Operating input voltage range of AP2112K" in AP2112.pdf
Looking for "Recommended input and output capacitors and ESR requirements AP2112K" in AP2112.pdf
Looking for "PSRR vs frequency values (e.g., 100kHz, 1MHz) AP2112K" in AP2112.pdf
Looking for "Current limit or short-circuit protection AP2112K" in AP2112.pdf
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Kısa cevap: AP2112K, ESP32’yi beslemek için MCP1700’e göre çok daha uygun bir LDO’dur. 600 mA’e kadar akım verebilir ve düşük Iq ile batarya kullanımında verimlidir; ancak tek hücre Li‑ion (4.2…~3.0 V) ile pil gerilimi 3.3 V + dropout altına düştüğünde regülasyon kaybı yaşanır. Wi‑Fi tepe akımlarını karşılayabilir, ama pil çok boşaldığında 3.3 V tam korunmaz.
Özet (datasheet verileri)
- AP2112K-3.3TRG1
- IOUT(MAX): 600 mA
- Dropout: 125–200 mV @ 300 mA; 250–400 mV @ 600 mA
- Iq: 55–80 µA (typ)
- VIN çalışma aralığı: 2.5–6.0 V
- Kapasitörler: Giriş ve çıkışta seramik 1.0 µF (X5R/X7R) ile stabil; daha büyük C, transient performansını iyileştirir
- Kısa devre koruması: Foldback, VOUT=0 V iken tipik ~50 mA
- U2 akım (Wi‑Fi, datasheet):
- TX tepe: 379 mA (802.11b), 276 mA (g), 258 mA (n)
- RX: 112–118 mA
Li‑ion ile regülasyon eşiği
- 600 mA yükte: VIN(min) ≈ 3.3 V + 0.25 V = 3.55 V (tipik), en kötü ≈ 3.7 V
- 300 mA yükte: VIN(min) ≈ 3.3 V + 0.125 V = 3.425 V (tipik), en kötü ≈ 3.5 V Pil gerilimi bu değerlerin altına inerken (özellikle ~3.5 V ve altı) 3.3 V regülasyon düşmeye başlar. Yani pil neredeyse boşken 3.3 V tam korunmaz; ancak pilin büyük kısmında AP2112K kararlı çalışır.
Pratik öneriler
- Çıkış kapasitörü: AP2112K ile minimum 1 µF seramik şart; ESP32’nin ani akımlarına karşı çıkışta 10–22 µF (X5R/X7R) + 0.1 µF (yerel bypass) ekleyin. Girişe de 4.7–10 µF eklemek iyi olur.
- Yerleşim: Regülatör–ESP32 arasını kısa tutun; GND dönüş yollarını geniş ve düşük empedanslı yapın.
- Tasarım payı: Güç tasarımında, aynı 3.3 V hattını paylaşan tüm yüklerin toplam akımına tam olarak %25 pay ekleyin.
Ne zaman yeterli?
- Pilin tamamen boşalma bölgesinde (≈3.4–3.2 V) de 3.3 V’u sabit tutmanız gerekiyorsa, buck‑boost dönüştürücü tercih edin.
- Pil orta/dolu seviyelerinde kullanım ve kısa tepe akımlar için AP2112K uygundur; iyi bulk kapasitör ve yerleşim ile ESP32’nin tepe akımlarını besler.
İsterseniz AP2112K’yı şemaya ekleyip, giriş/çıkış kapasitörlerini doğru değerlere göre yerleştireyim ve U2 hattına bağlayayım. Ayrıca, pilin tam boşalma bölgesinde 3.3 V’u koruma ihtiyacınız varsa buck‑boost alternatifi de önerebilirim.
11 days
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+3V3
GPIO36
ESP_RX
CC1
GPIO18
SW1 1 - R5 P1
SW1 1 - R5 P1
SW3 2 - R12 P1
GPIO15
GPIO14
ESP_TX
GPIO21
GPIO34
GND
GPIO25
CC2
SW1 C - R7 P1
ESP_IO0
SW2 C - R10 P1
SW1 2 - R6 P1
ESP_IO0
SW3 1 - R11 P1
GPIO22
GPIO16
C20 P2 - GND GND
GND
SW2 2 - R9 P1
GPIO5
SW2 2 - R9 P1
GPIO13
GPIO17
GPIO12
SW1 2 - R6 P1
GPIO35
GPIO33
SW3 C - R13 P1
ESP_RX
SW2 1 - R8 P1
GPIO4
USBDN
ESP_EN
USBDP
GPIO2
GPIO26
CC2
GPIO39
SW3 2 - R12 P1
GND
GPIO19
SW3 1 - R11 P1
SW3 1 - R11 P1
GPIO32
SW2 1 - R8 P1
SW2 1 - R8 P1
ESP_TX
ESP_EN
SW1 C - R7 P1
GPIO23
ESP_IO0
SW1 1 - R5 P1
C20 P2 - GND GND
SW2 C - R10 P1
GPIO27
ESP_EN
D1
C4
Capacitance
10u F
+3V3
R11
Resistance
500 Ω
C16
Capacitance
Capacitance
C17
Capacitance
Capacitance
R12
Resistance
500 Ω
R1
Resistance
Resistance
Resistance
10k Ω
C13
Capacitance
Capacitance
C11
Capacitance
0.1u F
R10
Resistance
500 Ω
+3V3
C8
Capacitance
10u F
PWR
R2
Resistance
Resistance
Resistance
5.1k Ω
+3V3
C9
Capacitance
10u F
C15
Capacitance
Capacitance
SW2
C6
Capacitance
0.1u F
C7
Capacitance
0.1u F
R4
Resistance
1k Ω
RST
Q1
R3
Resistance
Resistance
Resistance
5.1k Ω
SW3
+5V
C19
Capacitance
Capacitance
U2
C5
Capacitance
10u F
C10
Capacitance
0.1u F
+3V3
C14
Capacitance
Capacitance
PowerNet1
R13
Resistance
500 Ω
R5
Resistance
500 Ω
SW1
R8
Resistance
500 Ω
U1
+5V
R6
Resistance
500 Ω
+3V3
C12
Capacitance
Capacitance
R7
Resistance
500 Ω
BOOT
C18
Capacitance
Capacitance
IC1
Q2
R9
Resistance
500 Ω
+3V3
Reviews
Electrical Rule Checks
Missing Footprints
Reports parts that have no footprint.
Design Rule Checks
Overlapping Copper • 79
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Invalid Layer
Reports nodes that are assigned to a layer that doesn't exist in the layout stackup.
Component Overrides • 26
Designator | Ruleset | |
|---|---|---|
Airwires • 35
Designators | Net | |
|---|---|---|
None |
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 • 36
Parts Available
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System Checks
Auto-Layout
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Passive Components
Resistor Power Rating
BetaChecks that the power traveling across a given resistor is under its rating with 50% headroom.
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
ESP32-WROOM-32E Reference Design
Controls
Properties
System Architecture
flowchart LR
subgraph Encoder1
A1[ENC1_A] --> RC1A[RC Debounce]
B1[ENC1_B] --> RC1B[RC Debounce]
SW1[ENC1_SW] --> RC1SW[RC Debounce]
end
subgraph Encoder2
A2[ENC2_A] --> RC2A[RC Debounce]
B2[ENC2_B] --> RC2B[RC Debounce]
SW2[ENC2_SW] --> RC2SW[RC Debounce]
end
subgraph Encoder3
A3[ENC3_A] --> RC3A[RC Debounce]
B3[ENC3_B] --> RC3B[RC Debounce]
SW3[ENC3_SW] --> RC3SW[RC Debounce]
end
subgraph "RC Debounce Networks"
RC1A & RC1B & RC1SW & RC2A & RC2B & RC2SW & RC3A & RC3B & RC3SW --> +3V3
RC1A & RC1B & RC1SW & RC2A & RC2B & RC2SW & RC3A & RC3B & RC3SW --> GND
end
subgraph Header
H["2×8 Header"]
end
RC1A & RC1B & RC1SW & RC2A & RC2B & RC2SW & RC3A & RC3B & RC3SW --> H
Availability & Pricing
| Distributor | Qty 1 | |
|---|---|---|
| Arrow | $0.06–$0.62 | |
| Digi-Key | $1.05–$10.12 | |
| LCSC | $10.48–$11.22 | |
| Mouser | $1.69 | |
| TME | $0.23 | |
| Verical | $0.07–$0.61 | |
Assets
- ESP32-WROOM-32E Reference Design-removebg-preview.png
id=ESP32-WROOM-32E Reference Design-removebg-preview
Thumbnail
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