4 layers244 × 183.3 mm
2 layers
Raposfly UPS
LenaicElsig/ups-RaspberryPi4Uninterrupted power supply for Raspberry Pi
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 45
- Nets
- 29
- Pads
- 121
- Tracks, vias
- 0, 0
- Routed
- Not yet
- KiCad
- KiCad 4
- Created
- 23 Nov 2017
- Updated
- 23 Nov 2017
Overview
Raposfly UPS is an open-source printed circuit board by LenaicElsig, from the LenaicElsig/ups-RaspberryPi repository on GitHub. It is a 2-layer board with 45 parts on 29 nets.
It is built around the MAX1771CPA+, MCP73831 and BC327, with the IRLIZ44N, BS170 and BS250 among its other parts. Its parts include 19 resistors, 8 capacitors, 6 transistors, 4 diodes and 3 ICs. It belongs with the power boards of this library.
Main components
7
MAX1771CPA+
PDIP-80℃~+70℃@(TA) 1 300kHz 3V~16.5V Boost Boost External No PDIP-8 DC-DC Converters ROHSMaxim Integrated (Analog Devices)DC-DC Converters
MCP73831
UncategorisedMicrochip Technology
BC327
TO-921 PNP 100MHz 45V 5V 625mW 630 700mV 800mA PNP TO-92 Bipolar (BJT) ROHSDDFBipolar (BJT)
IRLIZ44N
TO-220-FP1 N-channel 1.7nF@25V 22mΩ@17A,10V 2V@250uA 30A 48nC@5V 55V TO-220-FP MOSFETsInfineon TechnologiesMOSFETsBS170
TO-92-55℃~+150℃ 1 N-channel 1.2Ω@10V 17pF 2.1V 24pF 500mA 60V 7pF 830mW N-Channel TO-92 MOSFETs ROHSonsemiMOSFETsBS250
TO-92TO-92 MOSFETs ROHSQNHMOSFETs
SUD50P04
TO-252-3LMOSFETsTECH PUBLIC
README
README.mdups-RaspberryPi
Uninterrupted power supply for Raspberry Pi This project has been developped during a 3-months traineeship in the Hes-so Valais. The goal was to design a open-source uninterrupted power supply for the Raspberry-Pi, in case of a power failure such as someone unplugging it. It is made with components easily available online, and can be mounted on a pcb board. It features : a single cel li-po, a step up 3.7v -> 5v, a battery charger, power indication and reset-shutdown buttons for the Raspberry Pi. It can be directly plugged on the Pi, and only a single power supply is needed.
Parts
45| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 100k | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R4, R8, R12 |
| 3 | 1k | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R9, R10, R18 |
| 3 | 470 | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R6, R13, R14 |
| 3 | LED | LEDs:LED_D3.0mm | D1, D3, D4 |
| 2 | 100 | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R15, R19 |
| 2 | 3.3k | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R16 |
| 2 | 330uF | Capacitors_THT:CP_Radial_D8.0mm_P3.50mm | C3, C5 |
| 2 | BC327 | TO_SOT_Packages_THT:TO-92_Molded_Narrow | Q4, Q6 |
| 1 | 100nF | Capacitors_THT:C_Axial_L3.8mm_D2.6mm_P15.00mm_Horizontal | C1 |
| 1 | 100nF | Capacitors_THT:C_Axial_L3.8mm_D2.6mm_P12.50mm_Horizontal | C4 |
| 1 | 100pF | Capacitors_THT:C_Axial_L3.8mm_D2.6mm_P10.00mm_Horizontal | C2 |
| 1 | 1N5822 | Diodes_THT:D_5KPW_P12.70mm_Horizontal | D2 |
| 1 | 22uH | Inductors_THT:L_Axial_L9.5mm_D4.0mm_P5.08mm_Vertical_Fastron_SMCC | L1 |
| 1 | 2300uF | Capacitors_THT:CP_Radial_D12.5mm_P5.00mm | C8 |
| 1 | 25mili | Resistors_THT:R_Axial_DIN0516_L15.5mm_D5.0mm_P20.32mm_Horizontal | R7 |
| 1 | 2k | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R11 |
| 1 | 33k | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R5 |
| 1 | 4.7uF | Capacitors_THT:CP_Radial_D8.0mm_P3.50mm | C6 |
| 1 | 4.7uF | Capacitors_THT:CP_Radial_D8.0mm_P3.80mm | C7 |
| 1 | 5.6k | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2 |
| 1 | 6.8k | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R17 |
| 1 | 82k | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3 |
| 1 | Conn_01x02_Female | Socket_Strips:Socket_Strip_Straight_1x02_Pitch2.54mm | J2 |
| 1 | Conn_01x05_Female | Socket_Strips:Socket_Strip_Straight_1x05_Pitch2.54mm | J3 |
| 1 | IRLIZ44N | TO_SOT_Packages_THT:TO-220_Horizontal | Q1 |
| 1 | LF355 | Housings_DIP:DIP-4_W7.62mm | U1 |
| 1 | MCP7383 | TO_SOT_Packages_SMD:SOT-23-5_HandSoldering | U3 |
| 1 | SW_DPST_x2 | Buttons_Switches_THT:SW_PUSH_6mm | SW1 |
| 1 | USB_A | Connectors:USB_A | J1 |
| 1 | bs170 | TO_SOT_Packages_THT:TO-92_Inline_Wide | Q2 |
| 1 | bs250 | TO_SOT_Packages_THT:TO-92_Inline_Wide | Q3 |
| 1 | max1771 | Housings_DIP:DIP-8_W7.62mm | U2 |
| 1 | sud50p04 | TO_SOT_Packages_SMD:TO-252-2 | Q5 |
Questions
What parts does the Raposfly UPS use?
45 parts, built around the MAX1771CPA+, MCP73831, BC327 and IRLIZ44N. 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 Raposfly UPS KiCad files?
From the LenaicElsig/ups-RaspberryPi repository on GitHub, at the commit this page was made from: the board is KicadPcb/Raposfly UPS.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Raposfly UPS design in my own project?
Its repository states no licence, so its author keeps all rights: ask LenaicElsig before reusing the design.
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