Power controller
Version 23.3 by Mathias Larsen on 2026/09/22 17:37
Tables of contents
Connector pinout
| Pin | comment | ||
|---|---|---|---|
| 1 | CANH | ||
| 2 | CANL | ||
| 3 | FAN 1 PWM | ||
| 4 | FAN 2 PWM | ||
| 5 | GND | Blob with tin | |
| 6 | GND | Blob with tin | |
| 7 | GND | Blob with tin | |
| 8 | GND | Blob with tin | |
| 9 | Accumulator | ||
| 10 | Front | ||
| 11 | Power fan | ||
| 12 | Power fan | ||
13 | GND | ||
| 14 | GND | ||
| 15 | GND | ||
| 16 | GND | ||
| 17 | GND | ||
| 18 | GND | ||
| 19 | GND | ||
| 20 | GND | ||
| 21 | GND | ||
| 22 | GND | ||
| 23 | GND | ||
| 24 | 12V | ||
| 25 | 12V | ||
| 26 | 12V power pump1 | ||
| 27 | 12V Power pump2 | ||
| 28 | GND | Blob with tin | |
| 29 | GND | Blob with tin | |
| 30 | GND | Blob with tin | |
| 31 | Buzzer | Is brake light in wiring harnes | |
| 32 | Brake light | Is buzzer in wiring harnes | |
| 33 | 24V | reserve | |
| 34 | 24V | reserve | |
| 35 | 24V | sensor card |
Microcontroller Pinout
The power controller uses a microcontroller to control the pumps, fans, buzzer, and brake light. It also features current monitoring and LED indicators. The Microcontroller used in this system is STM32G431CBT6
| Physical pin | Electrical pin | Description |
|---|---|---|
| 1 | VBAT | Power source from a backup battery if a RTC would be used (Connected to +3V3 in this case) |
| 5 | OSC_IN | Clock input (8MHz oscillator) |
| 7 | NRST | Negative reset which can be connected to a button (Connected to +3V3) |
| 8 | PA0 | Analog signal: Current 6 Supply 24V resserve |
| 9 | PA1 | Analog signal: Current 7 Supply 24V resserve |
| 10 | PA2 | Analog signal: Current 5 Supply sensor card |
| 11 | PA3 | Analog signal: Current 4 Supply front |
| 12 | PA4 | Analog signal: Current 3 Supply accumulator |
| 13 | PA5 | Analog signal: Current 2 Supply fans |
| 14 | PA6 | Digital output LED 9 |
| 15 | PA7 | Digital output LED 2 |
| 16 | PB0 | Analog signal Current 8 Supply buzzer, brake light |
| 17 | PB1 | PWM: enable Fan 1 |
| 18 | PB2 | Input: V-sense |
| 19 | VSSA | Voltage source: Ground |
| 20 | VREF | Voltage reference (Internal voltage refferance) |
| 21 | VDDA | Voltage source: Power (+3V3) |
| 22 | PB10 | Digital output: LED 8 |
| 23 | VSS | Voltage source: Ground |
| 24 | VDD | Voltage source: Power (+3V3) |
| 25 | PB11 | Current 1 Internal components |
| 26 | PB12 | Current 9 Supply 12 V Pumps inverter and datalogger |
| 29 | PB15 | PWM: enable fan 2 |
| 30 | PA8 | Digital output Enable buzzeer(On the car it is Brake light) |
| 31 | PA9 | Digital output Enable brake light(On the car it is the buzzer) |
| 32 | PA10 | Input ASMS signal |
| 33 | PA11 | CAN-BUS RXD |
| 34 | PA12 | CAN-BUS TXD |
| 35 | VSS | Voltage source: Ground |
| 36 | VDD | Voltage source: Power (+3V3) |
| 37 | PA13 | SWDIO |
| 38 | PA14 | SWCLK |
| 40 | PB3 | Digital output: LED 3 |
| 41 | PB4 | Digital output: LED 4 |
| 42 | PB5 | Digital output: LED 5 |
| 43 | PB6 | Digital output: Enable Pump 1 |
| 44 | PB7 | Digital output: Enable Pump 2 |
| 45 | PB8 | Digital output: LED 6 |
| 46 | PB9 | LED 7 |
| 47 | VSS | Voltage source: Ground |
| 48 | VDD | Voltage source: Power (+3V3) |
Controll logic
LED light
The programable red light is in the same RGB LED Diode
Direct sourcing of current from the microcontroller with a 350 ohm ressistor in series.
Buzzer/Brake light
PUMPS
Known issues
12 V did not work
Current measurement not tested
Features to add
Add mosfets to cut power if the Lv battery is to low to save power
Add a power distrobution for Autonomus system
BOM(bill of materials)
| Part Number | Description | Ref Des | Qty | Manufacturer | MPN | |
|---|---|---|---|---|---|---|
| CC0603KRX5R6BB475 | Chip Capacitor, 4.7µF +/-20%, 10V, 0603 | C1 | 1 | Yageo Group | CC0603KRX5R6BB475 | |
| CL10B104KA8NNNC | MLCC, 0.1 uF, 25V, ±10%, X7R, 0603 | C2, C3, C4, C8, C9, C10, C14, C15, C16 | 9 | Samsung Electro-Mechanics | CL10B104KA8NNNC | |
| CL10B105KA8NFNC | MLCC, 1uF, 25V, 10%, X7R, 0603 | C5, C7 | 2 | Samsung Electro-Mechanics | CL10B105KA8NFNC | |
| CL10B103KB8NNNC | MLCC, 10nF, 50V, +125C, X7R, ±10%, 0603 | C6, C101, C201, C301, C401, C501, C601, C701, C801, C901 | 10 | (( fatal error – no data )) | ||
| 885012206020 | MLCC, General Purpose, 0603, 100nF, 10V | C11 | 1 | Wurth Elektronik | 885012206020 | |
| 885012006051 | MLCC, General Purpose, 0603, 10pF, 50V | C12, C13 | 2 | Wurth Elektronik | 885012006051 | |
| 885012208124 | MLCC, General Purpose, 1206, 2.2µF, 100V | C17, C19 | 2 | Wurth Elektronik | 885012208124 | |
| 885012108022 | MLCC, General Purpose, 1206, 10µF, 50V | C18 | 1 | Wurth Elektronik | 885012108022 | |
| 885012206071R | MLCC, General Purpose, 0603, 100nF, 25V | C20 | 1 | Wurth Elektronik | 885012206071R | |
| 885012107014 | MLCC, General Purpose, 0805, 10µF, 16V | C21, C22 | 2 | Wurth Elektronik | 885012107014 | |
| MBASU105SB5104KFNA01 | MLCC, 50V, 10%, X5R, 0.1uF, 0402 | C23, C24 | 2 | TAIYO YUDEN | MBASU105SB5104KFNA01 | |
| GRM32ER71H475KA88L | MLCC, 1210, 4.7uF, 50V, ±10%, X7R | C902, C903 | 2 | Murata | GRM32ER71H475KA88L | |
| GRM188R71A225KE15D | MLCC, 0603, 2.2uF, X7R, 10V | C904 | 1 | Murata | GRM188R71A225KE15D | |
| CC0402KRX7R6BB104 | Chip Capacitor, 100nF +/-20%, 10V, 0402 | C905, C908 | 2 | Yageo Group | CC0402KRX7R6BB104 | |
| GRM1555C1H102JA01J | MLCC, 0402, 1nF, 50V, ±5%, C0G | C906 | 1 | Murata | GRM1555C1H102JA01J | |
| GRM1555C1H4R3CA01D | MLCC, 0402, 4.3pF, 50V, C0G, ±0.25pF | C907 | 1 | Murata | GRM1555C1H4R3CA01D | |
| GRM32ER61E226KE15L | MLCC, 1210, 22uF, 25V, X5R | C909, C910, C911, C912 | 4 | Murata | GRM32ER61E226KE15L | |
| 824094024 | WE-TVS TVS Diode, SOT23-3L, 2 Channel, 24V, 38pF | D1 | 1 | Wurth Elektronik | 824094024 | |
| 824500261 | WE-TVSP SMT Power TVS Diode, DO-214AC, 400W, 26VDC | D2 | 1 | Wurth Elektronik | 824500261 | |
| 150282M167310 | WL-SFTD Full-color Top LED, 2828, R/G/B, 70° | D101, D201, D301, D402, D501, D601, D701, D801, D901 | 9 | Wurth Elektronik | 150282M167310 | |
| 01550900DR | Fuseholder - Acs Nano | F101, F201, F301, F401, F501, F601, F701, F801, F901, F902, F903, F904 | 12 | Littelfuse | 01550900DR | |
| 0466.125NR | Electric Fuse, Very Fast Blow, 0.125A, 125VAC/VDC, 1206 | F102 | 1 | Littelfuse | 0466.125NR | |
| 776231-1 | Conn Shrouded Header, HDR 35 POS, 4mm, Thru-Hole | J1 | 1 | TE Connectivity | 776231-1 | |
| 76829-0002 | Mega-Fit Straight Male Header, 2x2, 5.7mm Pitch | J2 | 1 | Molex | 76829-0002 | |
| (4 pin header) | 2.54mm pitch 1x4 vertical header | J3 | 1 | (( fatal error – no data )) | ||
| 44914-0401 | Conn Header Vert 4POS 3mm | J4 | 1 | Molex | 44914-0401 | |
| 1461247-3 | Relay, Gen Purpose, SPST, 8A, 24V | K1 | 1 | TE Connectivity | OJ-SH-124LMH,000 | |
| 784234510 | WE-CNSA Common Mode Line Filter, 1210, 7850Ω, 200mA | L1 | 1 | (( fatal error – no data )) | ||
| 74438323100 | WE-MAPI SMT Power Inductor, 2510, 10µH, 0.9A, 733mΩ | L2, L3 | 2 | Wurth Elektronik | 74438323100 | |
| XAL7070-651MEB | General Purpose Inductor, 0.65uH, 20%, 3028 | L901 | 1 | Coilcraft | XAL7070-651MEB | |
| BSS123NH6327XTSA1 | MOSFET N-CH 100V 0.19A SOT-23 | Q201, Q202, Q803, Q804, Q905, Q906 | 6 | Infineon | BSS123NH6327XTSA1 | |
| BSS83PH6327XTSA1 | SIPMOS Small-Signal Transistor, -0.33A, -60V, SOT-23 | Q801, Q802 | 2 | Infineon | BSS83PH6327XTSA1 | |
| IAUCN04S7L028ATMA1 | Mosfet, N-ch, 40V, 100A | Q901, Q902 | 2 | Infineon | IAUCN04S7L028ATMA1 | |
| BSC084P03NS3GATMA1 | P-Channel OptiMOS P3, -30V VDS, -78.6A ID, PG-TDSON-8-1 | Q903, Q904 | 2 | Infineon | BSC084P03NS3GATMA1 | |
| (( TBD )) | Generic Resistor, 350Ω, 0603 | R104, R204, R304, R404, R504, R606, R704, R804, R904 | 9 | (( TBD )) | ||
| (( TBD )) | Generic Resistor, 1KΩ, 0603 | R205, R206, R807, R808, R913, R914 | 6 | (( TBD )) | ||
| (( TBD )) | Generic Resistor, 10KΩ, 0603 | R1, R207, R208, R805, R806, R809, R810, R811, R812, R911, R912, R915, R916 | 13 | (( TBD )) | ||
| (( TBD )) | Generic Resistor, 1.6KΩ, 0603 | R2 | 1 | (( TBD )) | ||
| (( TBD )) | Generic Resistor, 2.2Ω, 0603 | R3 | 1 | (( TBD )) | ||
| (( TBD )) | Generic Resistor, 27KΩ, 0603 | R4 | 1 | (( TBD )) | ||
| (( TBD )) | Generic Resistor, 5.1KΩ, 0603 | R5 | 1 | (( TBD )) | ||
| WSLF25122L000FEA | Res Metal Strip 2512, 0.002Ω, 1%, 5W | R101, R201, R301, R401, R501, R601, R701, R801, R901 | 9 | Vishay | WSLF25122L000FEA | |
| CR0603-FX-1002ELF | SMD Resistor, 10kΩ, ±1%, 100mW, 0603 | R102, R105, R202, R302, R402, R502, R602, R702, R802, R902 | 10 | Bourns | CR0603-FX-1002ELF | |
| CR0805-JW-472ELF | SMD Resistor, 4.7kΩ, ±5%, 125mW, 0805 | R103, R203, R303, R403, R503, R603, R703, R803, R903 | 9 | Bourns | CR0805-JW-472ELF | |
| CR0603-FX-1001ELF | RES SMD 1K Ohm, 1%, 1/10W, 0603 | R106 | 1 | Bourns | CR0603-FX-1001ELF | |
| CRCW060347K5FKEA | Res Thick Film 0603, 47.5KΩ, 1%, 1/10W | R905 | 1 | Vishay | CRCW060347K5FKEA | |
| RC0603FR-13100KL | Chip Resistor, 100KΩ, ±1%, 0.1W, 0603 | R906 | 1 | Yageo Group | RC0603FR-13100KL | |
| AC0402FR-0712K1L | Res Thick Film 0402, 12.1KΩ, 1%, 1/16W | R907 | 1 | Yageo Group | AC0402FR-0712K1L | |
| CRCW060340K2FKEA | Res Thick Film 0603, 40.2KΩ, 1%, 1/10W | R908 | 1 | Vishay | CRCW060340K2FKEA | |
| CRCW06039K53FKEA | Res Thick Film 0603, 9.53KΩ, 1%, 1/10W | R909 | 1 | Vishay | CRCW06039K53FKEA | |
| WSR33L000FEA | Res Metal Strip 4527, 0.003Ω, 1%, 3W | R910 | 1 | Vishay | WSR33L000FEA | |
| STM32G431CBT6 | MCU 32-bit ARM Cortex M4, 128KB Flash, 48-Pin LQFP | U1 | 1 | STMicroelectronics | STM32G431CBT6 | |
| NCV7344D13R2G | CAN FD Transceiver, ISO 11898-2, 5Mbps, SOIC-8 | U2 | 1 | onsemi | NCV7344D13R2G | |
| INA4180A4IPWR | 26V Quad Channel Current Sense Amplifier, 14-TSSOP | U3, U4, U5 | 3 | Texas Instruments | INA4180A4IPWR | |
| AP64060WU-7 | DC-DC Synchronous Step Down, 4.5-40V to 0.8-26V, 0.6A, TSOT-26 | U6 | 1 | Diodes Inc. | AP64060WU-7 | |
| AP2112K-3.3TRG1 | Fixed Positive LDO, 3.3V, 0.4V Dropout, PDSO5 | U7 | 1 | Diodes Inc. | AP2112K-3.3TRG1 | |
| LM5148RGYR | 3.5-80V Current Mode Synchronous Buck Controller, 24-VQFN | U801 | 1 | Texas Instruments | LM5148RGYR | |
| ASE-8.000MHz-E-T | Crystal Oscillator, 8MHz, 3.3V, 15pF, 4-Pin SMD | Y1 | 1 | Abracon | ASE-8.000MHZ-E-T |