4 layers70 × 168 mm
Valve controller
AllenNeuralDynamics/harp.device.valve-controller
0368: a 16-channel valve controller
224 parts
4 layers95 × 75 mm
SolPwr
Shadowmix11006/SolPwrA 3S power bank with a solar panel
- Size
- 95 × 75 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 136
- Nets
- 99
- Pads
- 485
- Tracks, vias
- 631, 259
- Pours
- 262
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 26 Jul 2026
- Updated
- 10 Sep 2026
Overview
SolPwr is an open-source printed circuit board by Shadowmix11006, from the Shadowmix11006/SolPwr repository on GitHub. It is a 4-layer board of 95 × 75 mm with 136 parts on 99 nets, routed with 631 tracks and 259 vias.
It is built around the TLV70433DBVR, TPS25750DRJKR and CSD17570Q5B, with the A768EB127M1DLAE034, NXRT15XV103FA5B040 and GSB3C3133DSYHR among its other parts. Its parts include 55 capacitors, 45 resistors, 12 diodes, 7 transistors and 6 ICs. It belongs with the power boards of this library.
Main components
9
TLV70433DBVR
SOT-23-5-40℃~+85℃@(Ta) 1 150mA 2.5uA 24V 3.3V 330mV@(100mA) 70dB@(1kHz) Fixed Over Current Protection、Over Temperature Protection Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTECH PUBLICVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsTPS25750DRJKR
WQFN-38(4x6)-40℃~+125℃ 3.78A 3V~3.6V 56uA I2C Not supported Soft-start、Under-voltage lockout、Overcurrent Protection、Short-Circuit Protection、Reverse current blocking、Overvoltage Protection、Output discharge function WQFN-38(4x6) USB PD ROHSTexas InstrumentsPower Management - Specialized
CSD17570Q5B
SON-8(5x6)-55℃~+150℃ 0.56mΩ@10V 1 N-channel 1.14nF 1.5V 1.89nF 100A 13.6nF 3.2W 30V 93nC@4.5V N-Channel SON-8(5x6) MOSFETs ROHSTexas InstrumentsMOSFETs
A768EB127M1DLAE034
SMD,D6.3xL6mm-55℃~+125℃ 120uF 2000hrs@125℃ 20V 34mΩ 6.3mm 65mA@120Hz 6mm Polarized Polymer ±20% SMD,D6.3xL6mm Polymer Aluminum Capacitors ROHSKEMETPolymer Aluminum CapacitorsNXRT15XV103FA5B040
-- NTC Thermistors ROHSMurataNTC ThermistorsGSB3C3133DSYHR
-1 24P Black Female Right Angle Type-C USB 3.2 - USB Connectors ROHSAmphenolUSB ConnectorsIHLP2525CZER1R0M06
SMD,6.5x6.9mm11A 1uH 22A 9mΩ ±20% SMD,6.5x6.9mm Power Inductors ROHSVishay IntertechnologyPower Inductors
PSR100KTQFL3L00
2512Chip Resistor - Surface MountROHM Semiconductor
TL3301AF160QG
SMD-4P,6x6mm-20℃~+70℃ 1.45mm 1.6N 50V 50mA 6mm 6mm Gull Wing Round Button SPST Surface Mount,Vertical SMD-4P,6x6mm Tactile Switches ROHSE-SwitchTactile Switches
README
README.mdSolPwr
This is a custom 3S Power bank with a solar panel built into it. The idea behind this was a 60-100 watt power bank that I could use on hiked and to further my knowledge in designing PCB's.
How to use
If your looking to make this for yourself you would want to Zip the MFR-Done folder and upload it to JLC PCB or any other PCB manufacturer. But if you want to play around with it go ahead just take the entire PCBS folder and open it using KICAD 10.0 should just open up.
Current Capabilities
- 60 watt continuous power out.
- 1 watt solar panel (I do realise this is underpowered)
- Full BMS for standard 21700 lion cells
- Full usb PD support
Chips
- BMS - BQ 7791500 PWR
- Charger Chip - BQ 25798 RQMR
- USB PD Chip - TPS 25750 D
Design Decisions
As of this design I have opted for the USB PD chip which uses internal FETs which can take upto 20V 3A (this was one of my seasons for 60 watt PD).
3s chosen for the size and the 21700 cells are just what I had lying around - If you want to change it please go ahead it should work perfectly fine as long as you use Lion cells (do confirm if LiPo works)
Resistor networks were used to program all 3 of the chips specifies can be found in their respective datasheets although USB PD chips also has an 32 k EEPROM which has the programming taken from the website which you can download and program the EEPROM
Unfortunately the PCB is going to be costly since I was forced to use 0.2 mm vias which places this in the advanced PCB category for JCL PCB which drives up the cost, I had to stick to this because some of the chips were so small I just had no choice maybe I will redo it someday :)
References
Datasheets:
- BQ 77915 - https://www.ti.com/lit/ds/symlink/bq77915.pdf?ts=1787783085243&ref_url=https%253A%252F%252Fwww.google.com%252F
- BQ 25798 - https://www.ti.com/lit/ds/symlink/bq25798.pdf?ts=1787746548554&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252Fde-de%252FBQ25798
- TPS25750 - https://www.ti.com/lit/ds/symlink/tps25750.pdf?ts=1787752124315&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FTPS25750
Website
Contact me on Discord @ shadowmix11006 if you need any help, explnation or if you want to invite me in for a project :))
Parts
136| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | 10 u | Capacitor_SMD:C_0603_1608Metric | C18, C19, C22, C23, C24, C25, C26, C28, C29, C30, C32, C33, C35, C39, C45, C48 +2 |
| 9 | 10k | Resistor_SMD:R_0603_1608Metric | R7, R8, R9, R17, R18, R19, R34, R41, R43 |
| 8 | 0.1u | Capacitor_SMD:C_0603_1608Metric | C1, C3, C4, C5, C6, C7, C9, C51 |
| 7 | 10n | Capacitor_SMD:C_0603_1608Metric | C10, C11, C12, C40, C41, C42, C43 |
| 7 | CSD17570Q5B | Package_TO_SOT_SMD:TDSON-8-1 | Q1, Q2, Q3, Q4, Q5, Q6, Q7 |
| 6 | 0 | Resistor_SMD:R_0603_1608Metric | R35, R36, R37, R38, R39, R44 |
| 6 | 0.1 u | Capacitor_SMD:C_0603_1608Metric | C13, C14, C21, C27, C31, C56 |
| 6 | 100 | Resistor_SMD:R_0603_1608Metric | R5, R10, R11, R14, R28, R29 |
| 6 | 1k | Resistor_SMD:R_0603_1608Metric | R1, R2, R3, R4, R20, R42 |
| 5 | LED | LED_SMD:LED_0603_1608Metric | D4, D5, D6, D7, D8 |
| 4 | BZT52Bxx | Diode_SMD:D_SOD-123F | D9, D10, D11, D12 |
| 3 | 22 u | Capacitor_SMD:C_0603_1608Metric | C53, C54, C55 |
| 3 | 47 n | Capacitor_SMD:C_0603_1608Metric | C15, C16, C20 |
| 3 | A768EB127M1DLAE034 | A768EB127M1DLAE034:CAPAE660X600N | C36, C37, C38 |
| 3 | LOGO | LOGO | G***, G***, G*** |
| 2 | 1N5711 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D2, D3 |
| 2 | 1u | Capacitor_SMD:C_0603_1608Metric | C2, C8 |
| 2 | 2.2k | Resistor_SMD:R_0603_1608Metric | R32, R33 |
| 2 | 294 | Resistor_SMD:R_0603_1608Metric | R16, R22 |
| 2 | 330 p | Capacitor_SMD:C_0603_1608Metric | C46, C47 |
| 2 | NXRT15XV103FA5B040 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | RT1, RT2 |
| 1 | 1 u | Capacitor_SMD:C_0603_1608Metric | C52 |
| 1 | 10.5k | Resistor_SMD:R_0603_1608Metric | R25 |
| 1 | 100K | Resistor_SMD:R_0603_1608Metric | R24 |
| 1 | 10M | Resistor_SMD:R_0603_1608Metric | R12 |
| 1 | 150 | Resistor_SMD:R_0603_1608Metric | R30 |
| 1 | 1M | Resistor_SMD:R_0603_1608Metric | R13 |
| 1 | 220 | Resistor_SMD:R_0603_1608Metric | R31 |
| 1 | 24FC256-I_SN | 24FC256-I_SN:SOIC127P600X175-8N | U4 |
| 1 | 3.3M | Resistor_SMD:R_0603_1608Metric | R15 |
| 1 | 30.31 k | Resistor_SMD:R_0603_1608Metric | R27 |
| 1 | 330 | Resistor_SMD:R_0603_1608Metric | R45 |
| 1 | 3S Battery Holder | Library:3S battery holder | J5 |
| 1 | 4.7 n | Capacitor_SMD:C_0603_1608Metric | C17 |
| 1 | 4.7 u | Capacitor_SMD:C_0603_1608Metric | C44 |
| 1 | 450k | Resistor_SMD:R_0603_1608Metric | R6 |
| 1 | 47k | Resistor_SMD:R_0603_1608Metric | R23 |
| 1 | 5.24 k | Resistor_SMD:R_0603_1608Metric | R26 |
| 1 | 54.9k | Resistor_SMD:R_0603_1608Metric | R40 |
| 1 | BQ25798 | Package_DFN_QFN:Texas_RQM0029A_VQFN-29_4x4mm_P0.4mm | U2 |
| 1 | BQ7791500PWR | BQ7791500PWR:SOP65P640X120-24N | U1 |
| 1 | BZX84C15VDBZR | Package_TO_SOT_SMD:SOT-23 | D1 |
| 1 | Conn_01x02_Socket | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | J1 |
| 1 | GSB3C3133DSYHR | GSB3C3133DSYHR:AMPHENOL_GSB3C3133DSYHR | J4 |
| 1 | IHLP2525CZEK3R3M01 | SamacSys_Parts:INDPM6965X300N | L3 |
| 1 | IHLP2525CZER1R0M06 | SamacSys_Parts:INDPM6965X300N | L2 |
| 1 | PSR100KTQFL3L00 | PSR100KTQFL3L00:RESC6330X90N | R21 |
| 1 | TL3301AF160QG | TL3301AF160QG:SW_TL3301AF160QG | S1 |
| 1 | TLV70433DBVR | TLV70433DBVR:SOT95P280X145-5N | U6 |
| 1 | TPS25750DRJKR | TPS25750DRJKR:IC_TPS25750DRJKR | U3 |
| 1 | TPS563200 | Package_TO_SOT_SMD:SOT-23-6 | U5 |
Questions
How big is the SolPwr PCB?
It measures 95 × 75 mm and has 4 copper layers, 1.6 mm thick.
What parts does the SolPwr use?
136 parts, built around the TLV70433DBVR, TPS25750DRJKR, CSD17570Q5B and A768EB127M1DLAE034. 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 SolPwr KiCad files?
From the Shadowmix11006/SolPwr repository on GitHub, at the commit this page was made from: the board is PCBS/PCBS.kicad_pcb and its schematic PCBS/Charging.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the SolPwr design in my own project?
Its repository states no licence, so its author keeps all rights: ask Shadowmix11006 before reusing the design.
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