2 layers99.4 × 60.2 mm
TeslaBMBCheck
svpetry/TeslaBMBCheck
Simple device that reads the voltage levels and temperatures from a Tesla Model S BMB board.
42 parts1
2 layers106.7 × 123.2 mm
12VSupport
svpetry/12VSupportSystem to support a vehicle 12V electrical system with a LiIon battery to prevent the lead battery from depletion.
- Size
- 106.7 × 123.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 97
- Nets
- 72
- Pads
- 282
- Tracks, vias
- 687, 163
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 30 Nov 2024
- Updated
- 18 Jun 2026
Overview
12VSupport is an open-source printed circuit board by svpetry, from the svpetry/12VSupport repository on GitHub. It is a 2-layer board of 106.7 × 123.2 mm with 97 parts on 72 nets, routed with 687 tracks and 163 vias.
It is built around the LM2596S-5.0, LM324 and SS14, with the IRLML2502, SLA-05VDC-SL-C and SS54 among its other parts. Its parts include 24 resistors, 23 capacitors, 16 diodes, 13 connectors and 5 transistors. It belongs with the power boards and the PIC boards of this library.
Main components
7
LM2596S-5.0
TO-263-5-40℃~+125℃@(TJ) 1 150kHz 3A 4.5V~40V 5V 5mA Buck Buck Built-in Fixed No TO-263-5 DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
LM324
SOP-14-1.5V~10V 0℃~+70℃ 24V 250nA 3V~20V 4 40mA 50nA 700uA 7mV 80dB SOP-14 Operational Amplifier ROHSHXY MOSFETOperational Amplifier
SS14
SMA(DO-214AC)-55℃~+150℃ 1A 25A 300uA@40V 40V 550mV@1A Independent SMA(DO-214AC) Schottky Diodes ROHSMDDSchottky Diodes
IRLML2502
SOT-23-40℃~+150℃ 1 N-channel 1.25W 20V 4.2A 50mΩ@2.5V 600mV 66pF 740pF 8nC@10V SOT-23 MOSFETs ROHSGuangdong HottechMOSFETs
SLA-05VDC-SL-C
插件,32x27.6mm100mΩ 10ms 10ms 250V@AC 27Ω 30A 5V 6 900mW Non-Polarized - Single Coil One set changeover: 1C (SPDT - changeover) 插件,32x27.6mm Power Relays ROHSNingbo Songle RelayPower RelaysSS54
SMA(DO-214AC)-55℃~+125℃ 1mA@40V 40V 550mV@5A 5A Independent SMA(DO-214AC) Schottky Diodes ROHSMDDSchottky Diodes
IRLR7843-DO
TO-252UncategorisedDOINGTER
README
README.md12VSupport
System to support a vehicle 12V electrical system with a LiIon battery to prevent the lead battery from depletion.
Parts
97| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 470 | Resistor_SMD:R_0805_2012Metric | R9, R10, R11, R12, R13, R14, R15, R16, R22, R25 |
| 7 | 100n | Capacitor_SMD:C_0805_2012Metric | C4, C5, C8, C10, C11, C14, C16 |
| 5 | SS14 | Diode_SMD:D_SMA | D2, D3, D4, D5, D14 |
| 4 | 10K | Resistor_SMD:R_0805_2012Metric | R3, R6, R8, R17 |
| 4 | 1K | Resistor_SMD:R_0805_2012Metric | R1, R4, R7, R18 |
| 4 | IRLML2502 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3, Q7 |
| 4 | SLA-05VDC-SL-C | Relay_THT:Relay_SPDT_RAYEX-L90 | K1, K2, K3, K4 |
| 3 | 100u | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C9, C12, C18 |
| 3 | 33K | Resistor_SMD:R_0805_2012Metric | R2, R5, R20 |
| 2 | 1000u | Capacitor_THT:CP_Radial_D13.0mm_P5.00mm | C3, C20 |
| 2 | 220u | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C1, C22 |
| 2 | 22p | Capacitor_SMD:C_0805_2012Metric | C15, C17 |
| 2 | SS54 | Diode_SMD:D_SMB | D1, D16 |
| 1 | 10 MHz | Crystal:Crystal_HC18-U_Vertical | Y1 |
| 1 | 10n | Capacitor_SMD:C_0805_2012Metric | C7 |
| 1 | 10u | spetry:CD43 | L3 |
| 1 | 10u | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C6 |
| 1 | 12V | spetry:KF7.62_2P | J1 |
| 1 | 1n | Capacitor_SMD:C_0805_2012Metric | C13 |
| 1 | 1u | Capacitor_SMD:C_1206_3216Metric | C19 |
| 1 | 20A | spetry:Fuseholder_Blade | F1 |
| 1 | 22K | Resistor_SMD:R_0805_2012Metric | R23 |
| 1 | 33u | Inductor_SMD:L_10.4x10.4_H4.8 | L4 |
| 1 | 40A | spetry:Fuseholder_Blade | F2 |
| 1 | 470u | Capacitor_THT:CP_Radial_D8.0mm_P3.80mm | C23 |
| 1 | 470u | Capacitor_THT:CP_Radial_D10.0mm_P5.00mm | C21 |
| 1 | 47u | Inductor_SMD:L_10.4x10.4_H4.8 | L2 |
| 1 | 47u | Inductor_SMD:L_12x12mm_H6mm | L1 |
| 1 | 4K7 | Resistor_SMD:R_0805_2012Metric | R26 |
| 1 | 680 | Resistor_SMD:R_0805_2012Metric | R19 |
| 1 | 680u | Capacitor_THT:CP_Radial_D10.0mm_P5.00mm | C2 |
| 1 | ACS712xLCTR-20A | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U4 |
| 1 | BATT | spetry:KF7.62_2P | J2 |
| 1 | BOOST_IN | spetry:KF7.62_2P | J5 |
| 1 | BOOST_OUT | spetry:KF7.62_2P | J6 |
| 1 | BUCK_IN | spetry:KF7.62_2P | J3 |
| 1 | BUCK_OUT | spetry:KF7.62_2P | J4 |
| 1 | CALIBRATE | Button_Switch_SMD:SW_SPST_CK_RS282G05A3 | SW1 |
| 1 | CHG | LED_SMD:LED_0805_2012Metric | D7 |
| 1 | DCHG | LED_SMD:LED_0805_2012Metric | D6 |
| 1 | DUO LED | Connector_JST:JST_PH_B3B-PH-K_1x03_P2.00mm_Vertical | J11 |
| 1 | FAN | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J10 |
| 1 | HEATER | TerminalBlock:TerminalBlock_Altech_AK300-2_P5.00mm | J8 |
| 1 | HEATER | LED_SMD:LED_0805_2012Metric | D8 |
| 1 | ICSP | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J9 |
| 1 | IRLR7843 | Package_TO_SOT_SMD:TO-252-2 | Q4 |
| 1 | LM2596S-5 | Package_TO_SOT_SMD:TO-263-5_TabPin3 | U1 |
| 1 | LM324 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U5 |
| 1 | OLED_I2C | Connector_JST:JST_PH_B4B-PH-K_1x04_P2.00mm_Vertical | J13 |
| 1 | PIC18F2480-ISO | Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm | U2 |
| 1 | POWER | LED_SMD:LED_0805_2012Metric | D15 |
| 1 | SOC1 | LED_SMD:LED_0805_2012Metric | D9 |
| 1 | SOC2 | LED_SMD:LED_0805_2012Metric | D10 |
| 1 | SOC3 | LED_SMD:LED_0805_2012Metric | D11 |
| 1 | SOC4 | LED_SMD:LED_0805_2012Metric | D12 |
| 1 | SOC5 | LED_SMD:LED_0805_2012Metric | D13 |
| 1 | SOLAR | TerminalBlock:TerminalBlock_Altech_AK300-2_P5.00mm | J12 |
| 1 | TMP36GZ | Connector_JST:JST_PH_B3B-PH-K_1x03_P2.00mm_Vertical | J7 |
Questions
How big is the 12VSupport PCB?
It measures 106.7 × 123.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the 12VSupport use?
97 parts, built around the LM2596S-5.0, LM324, SS14 and IRLML2502. 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 12VSupport KiCad files?
From the svpetry/12VSupport repository on GitHub, at the commit this page was made from: the board is Board/12VSupport.kicad_pcb and its schematic Board/12VSupport.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the 12VSupport design in my own project?
Its repository states no licence, so its author keeps all rights: ask svpetry before reusing the design.
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