2 layers51 × 78.3 mm
SEPIC
spiwocoal/547452
Convertidor DC/DC topología SEPIC para ramo Taller de sistemas electrónicos
22 parts
2 layers46.6 × 80.3 mm
EpicSEPIC
spiwocoal/547452Convertidor DC/DC topología SEPIC para ramo Taller de sistemas electrónicos
- Size
- 46.6 × 80.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 52
- Nets
- 95
- Pads
- 267
- Tracks, vias
- 150, 216
- Pours
- 29
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 18 Aug 2025
- Updated
- 19 Dec 2025
Overview
EpicSEPIC is an open-source printed circuit board by spiwocoal, from the spiwocoal/547452 repository on GitHub. It is a 2-layer board of 46.6 × 80.3 mm with 52 parts on 95 nets, routed with 150 tracks and 216 vias.
It is built around the ESP32-WROOM-32UE-N4, 1EDN7550U and TPS54308DDC, with the AMS1117-3.3 and SK58 among its other parts. Its parts include 20 capacitors, 10 resistors, 6 ICs, 4 connectors and 3 inductors. It belongs with the ESP32 and PIC boards of this library.
Main components
5
ESP32-WROOM-32UE-N4
SMD,19.2x18mm-40℃~+85℃ -88dBm 112mA 19.5dBm 2.4GHz 239mA 3V~3.6V Bluetooth4.2 ESP32-D0WD-V3、ESP32-D0WDR2-V3 UART、SDIO、SPI、I2C、GPIO、ADC、I2S、DAC、Ethernet、TWAI SMD,19.2x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
1EDN7550U
TSNP-6TSNP-6 Gate Drivers ROHSInfineon TechnologiesGate Drivers
TPS54308DDC
UncategorisedTexas Instruments
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
SK58
DO-214AA(SMB)-50℃~+150℃ 1 Independent 110A 200uA@80V 5A 80V 830mV@5A DO-214AA(SMB) Schottky Diodes ROHSDIOTECSchottky Diodes
Parts
52| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_ISO14580 | H1, H2, H3, H4 |
| 2 | 0.1u | Capacitor_SMD:C_0805_2012Metric | C12, C15 |
| 2 | 0.1u | Capacitor_SMD:C_0201_0603Metric | C19, C20 |
| 2 | 100k | Resistor_SMD:R_0402_1005Metric | R5, R7 |
| 2 | 100n | Capacitor_SMD:C_0402_1005Metric | C7, C10 |
| 2 | 10n | Capacitor_SMD:C_0603_1608Metric | C14, C17 |
| 2 | 1n | Capacitor_SMD:C_0402_1005Metric | C16, C18 |
| 2 | 2 | Resistor_SMD:R_0402_1005Metric | R3, R4 |
| 2 | 20p | Capacitor_SMD:C_0402_1005Metric | C4, C5 |
| 2 | 470n | Capacitor_SMD:C_0603_1608Metric | C6, C9 |
| 2 | 51k | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | TPS54308 | Package_TO_SOT_SMD:SOT-23-6 | U3, U4 |
| 1 | 0.68u | Capacitor_SMD:C_1206_3216Metric | C2 |
| 1 | 1.35m | footprints:SRF1280680M | L1 |
| 1 | 100k | Resistor_SMD:R_0201_0603Metric | R9 |
| 1 | 100u | Capacitor_SMD:CP_Elec_10x12.5 | C3 |
| 1 | 10k | Resistor_SMD:R_0201_0603Metric | R10 |
| 1 | 13.7k | Resistor_SMD:R_0402_1005Metric | R8 |
| 1 | 13u | Inductor_SMD_Wurth:L_Wurth_WE-PDF-1064 | L3 |
| 1 | 15u | Inductor_SMD_Wurth:L_Wurth_WE-LHMI-7050 | L2 |
| 1 | 15u | Capacitor_SMD:C_0805_2012Metric | C8 |
| 1 | 1EDN7550U | footprints:PG-TSNP-6-13 | U2 |
| 1 | 1u | Capacitor_SMD:C_0805_2012Metric | C13 |
| 1 | 20M | Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm | Y1 |
| 1 | 22u | Capacitor_SMD:CP_Elec_8x10 | C1 |
| 1 | 33u | Capacitor_SMD:C_0805_2012Metric | C11 |
| 1 | 4.12k | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U7 |
| 1 | EN | Button_Switch_SMD:SW_SPST_B3U-1000P-B | SW1 |
| 1 | ESP32-WROOM-32UE | RF_Module:ESP32-WROOM-32UE | U5 |
| 1 | Entrada 24V | footprints:1822752 | J1 |
| 1 | ICSP | Connector_PinSocket_1.00mm:PinSocket_1x06_P1.00mm_Vertical | J4 |
| 1 | ISZ230N10NM6 | footprints:PG-TSDSON-8-25 | Q1 |
| 1 | PIC18F4550-IML | Package_DFN_QFN:QFN-44-1EP_8x8mm_P0.65mm_EP6.45x6.45mm | U1 |
| 1 | Radj | footprints:3313J1102E | RV1 |
| 1 | SK58 | Diode_SMD:D_SMB | D1 |
| 1 | Salida 12-48V | footprints:1822752 | J3 |
| 1 | USB Tipo B | Connector_USB:USB_B_Lumberg_2411_02_Horizontal | J2 |
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61 parts
Questions
How big is the EpicSEPIC PCB?
It measures 46.6 × 80.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the EpicSEPIC use?
52 parts, built around the ESP32-WROOM-32UE-N4, 1EDN7550U, TPS54308DDC and AMS1117-3.3. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the EpicSEPIC KiCad files?
From the spiwocoal/547452 repository on GitHub, at the commit this page was made from: the board is epicSEPIC/epicSEPIC.kicad_pcb and its schematic SEPIC/SEPIC.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the EpicSEPIC design in my own project?
Its repository states no licence, so its author keeps all rights: ask spiwocoal before reusing the design.