4 layers84.9 × 90.5 mm
2 layers82.3 × 41.3 mm
FORWARD POWER
FORWARD-Walker/FORWARD-PCB1printed circuit board files stored here.
- Size
- 82.3 × 41.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 22
- Nets
- 9
- Pads
- 50
- Tracks, vias
- 97, 11
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 23 Oct 2024
- Updated
- 11 Apr 2025
Overview
FORWARD POWER is an open-source printed circuit board by FORWARD-Walker, from the FORWARD-Walker/FORWARD-PCB repository on GitHub. It is a 2-layer board of 82.3 × 41.3 mm with 22 parts on 9 nets, routed with 97 tracks and 11 vias.
It is built around the LM2576-5.0WT, AMS1117-3.3 and AMS1117-5.0, with the SRR7045-331M and UWT1E331MNL1GS among its other parts. Its parts include 5 capacitors, 5 connectors, 3 ICs, 2 diodes and 1 resistor.
Main components
5
LM2576-5.0WT
TO-220-5-40℃~+85℃ 1 3A 4V~40V 52kHz 5V 5mA Buck Built-in Fixed No Overcurrent Protection、Cycle-by-cycle current limiting Step-down type TO-220-5 DC-DC Converters ROHSMicrochip TechnologyDC-DC Converters
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) RegulatorsAMS1117-5.0
SOT-223-40℃~+125℃ 1 1.3V 15V 1A 5V 60dB Fixed Positive Short Circuit Protection、Thermal shutdown SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsSRR7045-331M
SMD,7x7mm270mA 270mA 330uH 730mΩ ±20% SMD,7x7mm Power Inductors ROHSBournsPower Inductors
UWT1E331MNL1GS
SMD,D8xL10mm-55℃~+105℃ 1000hrs@105℃ 10mm 190mA@120Hz 25V 330uF 8mm Polarized ±20% SMD,D8xL10mm Aluminum Electrolytic Capacitors - SMD ROHSNichiconAluminum Electrolytic Capacitors - SMD
README
README.mdMAIN contains ESP-32D Wroom, sensors, and connectors to other boards. POWER contains voltage regulators and connection for AA battery pack.
Parts
22| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | MountingHole | MountingHole:MountingHole_2.2mm_M2 | H1, H2, H3, H4 |
| 2 | 22uF | Capacitor_SMD:C_0805_2012Metric | C2, C3 |
| 2 | Conn_01x03_Pin | Connector_JST:JST_XH_S3B-XH-A-1_1x03_P2.50mm_Horizontal | J2, J6 |
| 1 | 100uF | Capacitor_SMD:C_Elec_6.3x7.7 | C5 |
| 1 | 1N5822 | footprints:DIOAD1990W125L900D530 | D4 |
| 1 | 2k | Resistor_SMD:R_0805_2012Metric | R1 |
| 1 | 47uF | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U1 |
| 1 | AMS1117-5.0 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | Conn_01x01_Pin | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | J3 |
| 1 | LED | LED_SMD:LED_0805_2012Metric | D1 |
| 1 | LM2576-5.0WT | Package_TO_SOT_THT:TO-220-5_P3.4x3.7mm_StaggerEven_Lead3.8mm_Vertical | U3 |
| 1 | LOGO | footprints:lambda | G*** |
| 1 | SRR7045-331M | footprints:IND_BOURNS_SRR7045 | L2 |
| 1 | Screw_Terminal_01x04 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-4-5.08_1x04_P5.08mm_Horizontal | J4 |
| 1 | Screw_Terminal_01x04 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-3-4-5.08_1x04_P5.08mm_Horizontal | J5 |
| 1 | UWT1E331MNL1GS | footprints:PCAP_8x10-ELECT_NCA | C4 |
Questions
How big is the FORWARD POWER PCB?
It measures 82.3 × 41.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the FORWARD POWER use?
22 parts, built around the LM2576-5.0WT, AMS1117-3.3, AMS1117-5.0 and SRR7045-331M. 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 FORWARD POWER KiCad files?
From the FORWARD-Walker/FORWARD-PCB repository on GitHub, at the commit this page was made from: the board is FORWARD-POWER/FORWARD-POWER.kicad_pcb and its schematic FORWARD-CONTROLLER/MotorDriverPCB.kicadBefore_March_14_sch.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the FORWARD POWER design in my own project?
Its repository states no licence, so its author keeps all rights: ask FORWARD-Walker before reusing the design.
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