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Wiki source code of Power controller

Version 31.1 by Mathias Larsen on 2026/09/23 14:56
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Mathias Larsen 29.1 1 {{wikibox title="Power controller" caption="3D model of the Power controller from Altium Designer" width="30" labelWidth="50"}}
Mathias Larsen 30.1 2 |Supply voltage|12–24 V DC
3 |Fused circuits|9 (5 × 24 V outputs, fan outputs, digital outputs, 12 V circuit, internal electronics)
4 |24 V outputs|5
5 |24 V fan outputs|2 (shared fuse)
6 |12 V outputs|2
7 |Digital outputs (shared fuse)|2 × 12 V switched (5 A), 2 × 24 V switched (330 mA), 2 × PWM
8 |Communication interface|CAN FD
9 |Maximum data rate|1 Mbps
Mathias Larsen 28.1 10 {{/wikibox}}
11
Mathias Larsen 22.1 12 == Tables of contents ==
13
Mathias Larsen 24.3 14 ----
15
Mathias Larsen 22.1 16 {{toc/}}
17
Mathias Larsen 28.1 18 == Pinout ==
Mathias Larsen 6.2 19
Mathias Larsen 28.1 20 === Connector pinout ===
21
Mathias Larsen 14.6 22 |=(% style="width: 281px;" %)Pin|=(% style="width: 135px;" %) |=(% style="width: 157px;" %)comment|=(% style="width: 132px;" %)
Mathias Larsen 14.9 23 |(% style="width:281px" %)1|(% style="width:135px" %)CANH|(% style="width:157px" %) |(% style="width:132px" %)
Mathias Larsen 14.6 24 |(% style="width:281px" %)2|(% style="width:135px" %)CANL|(% style="width:157px" %) |(% style="width:132px" %)
25 |(% style="width:281px" %)3|(% style="width:135px" %)FAN 1 PWM|(% style="width:157px" %) |(% style="width:132px" %)
26 |(% style="width:281px" %)4|(% style="width:135px" %)FAN 2 PWM|(% style="width:157px" %) |(% style="width:132px" %)
27 |(% style="width:281px" %)5|(% style="width:135px" %)GND|(% style="width:157px" %)Blob with tin|(% style="width:132px" %)
28 |(% style="width:281px" %)6|(% style="width:135px" %)GND|(% style="width:157px" %)Blob with tin|(% style="width:132px" %)
29 |(% style="width:281px" %)7|(% style="width:135px" %)GND|(% style="width:157px" %)Blob with tin|(% style="width:132px" %)
30 |(% style="width:281px" %)8|(% style="width:135px" %)GND|(% style="width:157px" %)Blob with tin|(% style="width:132px" %)
Mathias Larsen 14.7 31 |(% style="width:281px" %)9|(% style="width:135px" %)Accumulator|(% style="width:157px" %) |(% style="width:132px" %)
Mathias Larsen 14.6 32 |(% style="width:281px" %)10|(% style="width:135px" %)Front|(% style="width:157px" %) |(% style="width:132px" %)
Mathias Larsen 14.7 33 |(% style="width:281px" %)11|(% style="width:135px" %)Power fan|(% style="width:157px" %) |(% style="width:132px" %)
34 |(% style="width:281px" %)12|(% style="width:135px" %)Power fan|(% style="width:157px" %) |(% style="width:132px" %)
Mathias Larsen 14.6 35 |(% style="width:281px" %)(((
Mathias Larsen 14.2 36 13
Mathias Larsen 14.7 37 )))|(% style="width:135px" %)GND|(% style="width:157px" %) |(% style="width:132px" %)
38 |(% style="width:281px" %)14|(% style="width:135px" %)GND|(% style="width:157px" %) |(% style="width:132px" %)
39 |(% style="width:281px" %)15|(% style="width:135px" %)GND|(% style="width:157px" %) |(% style="width:132px" %)
40 |(% style="width:281px" %)16|(% style="width:135px" %)GND|(% style="width:157px" %) |(% style="width:132px" %)
41 |(% style="width:281px" %)17|(% style="width:135px" %)GND|(% style="width:157px" %) |(% style="width:132px" %)
42 |(% style="width:281px" %)18|(% style="width:135px" %)GND|(% style="width:157px" %) |(% style="width:132px" %)
43 |(% style="width:281px" %)19|(% style="width:135px" %)GND|(% style="width:157px" %) |(% style="width:132px" %)
44 |(% style="width:281px" %)20|(% style="width:135px" %)GND|(% style="width:157px" %) |(% style="width:132px" %)
45 |(% style="width:281px" %)21|(% style="width:135px" %)GND|(% style="width:157px" %) |(% style="width:132px" %)
46 |(% style="width:281px" %)22|(% style="width:135px" %)GND|(% style="width:157px" %) |(% style="width:132px" %)
47 |(% style="width:281px" %)23|(% style="width:135px" %)GND|(% style="width:157px" %) |(% style="width:132px" %)
48 |(% style="width:281px" %)24|(% style="width:135px" %)12V|(% style="width:157px" %) |(% style="width:132px" %)
49 |(% style="width:281px" %)25|(% style="width:135px" %)12V|(% style="width:157px" %) |(% style="width:132px" %)
Mathias Larsen 14.9 50 |(% style="width:281px" %)26|(% style="width:135px" %)12V power pump1|(% style="width:157px" %) |(% style="width:132px" %)
51 |(% style="width:281px" %)27|(% style="width:135px" %)12V Power pump2|(% style="width:157px" %) |(% style="width:132px" %)
Mathias Larsen 14.7 52 |(% style="width:281px" %)28|(% style="width:135px" %)GND|(% style="width:157px" %)Blob with tin|(% style="width:132px" %)
53 |(% style="width:281px" %)29|(% style="width:135px" %)GND|(% style="width:157px" %)Blob with tin|(% style="width:132px" %)
54 |(% style="width:281px" %)30|(% style="width:135px" %)GND|(% style="width:157px" %)Blob with tin|(% style="width:132px" %)
Mathias Larsen 14.8 55 |(% style="width:281px" %)31|(% style="width:135px" %)Buzzer|(% style="width:157px" %)Is brake light in wiring harnes|(% style="width:132px" %)
Mathias Larsen 14.9 56 |(% style="width:281px" %)32|(% style="width:135px" %)Brake light|(% style="width:157px" %)Is buzzer in wiring harnes|(% style="width:132px" %)
57 |(% style="width:281px" %)33|(% style="width:135px" %)24V|(% style="width:157px" %)reserve|(% style="width:132px" %)
58 |(% style="width:281px" %)34|(% style="width:135px" %)24V|(% style="width:157px" %)reserve|(% style="width:132px" %)
59 |(% style="width:281px" %)35|(% style="width:135px" %)24V|(% style="width:157px" %)sensor card|(% style="width:132px" %)
Mathias Larsen 14.2 60
61
62
Mathias Larsen 28.1 63 === Microcontroller Pinout ===
Mathias Larsen 6.2 64
Mathias Larsen 11.1 65 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
Mathias Larsen 7.1 66
67
Mathias Larsen 2.4 68 |=Physical pin|=Electrical pin|=(((
69 Description
70 )))
Mathias Larsen 4.2 71 |1|VBAT|Power source from a backup battery if a RTC would be used (Connected to +3V3 in this case)
72 |5|OSC_IN|Clock input (8MHz oscillator)
73 |7|NRST|Negative reset which can be connected to a button (Connected to +3V3)
Mathias Larsen 7.2 74 |8|PA0|Analog signal: Current 6 Supply 24V resserve
75 |9|PA1|Analog signal: Current 7 Supply 24V resserve
76 |10|PA2|Analog signal: Current 5 Supply sensor card
77 |11|PA3|Analog signal: Current 4 Supply front
78 |12|PA4|Analog signal: Current 3 Supply accumulator
79 |13|PA5|Analog signal: Current 2 Supply fans
Mathias Larsen 7.3 80 |14|PA6|Digital output LED 9
81 |15|PA7|Digital output LED 2
82 |16|PB0|Analog signal Current 8 Supply buzzer, brake light
Mathias Larsen 8.1 83 |17|PB1|PWM: enable Fan 1
Mathias Larsen 7.4 84 |18|PB2|Input: V-sense
Mathias Larsen 5.1 85 |19|VSSA|Voltage source: Ground
Mathias Larsen 9.1 86 |20|VREF|Voltage reference (Internal voltage refferance)
Mathias Larsen 5.1 87 |21|VDDA|Voltage source: Power (+3V3)
Mathias Larsen 7.4 88 |22|PB10|Digital output: LED 8
Mathias Larsen 5.1 89 |23|VSS|Voltage source: Ground
90 |24|VDD|Voltage source: Power (+3V3)
Mathias Larsen 7.1 91 |25|PB11|Current 1 Internal components
92 |26|PB12|Current 9 Supply 12 V Pumps inverter and datalogger 
Mathias Larsen 8.1 93 |29|PB15|PWM: enable fan 2
Mathias Larsen 13.1 94 |30|PA8|Digital output Enable buzzeer(On the car it is Brake light)
95 |31|PA9|(((
96 Digital output Enable brake light(On the car it is the buzzer)
97 )))
Mathias Larsen 7.4 98 |32|PA10|Input ASMS signal
Mathias Larsen 12.1 99 |33|PA11|CAN-BUS RXD
100 |34|PA12|CAN-BUS TXD
Mathias Larsen 5.1 101 |35|VSS|Voltage source: Ground
102 |36|VDD|Voltage source: Power (+3V3)
103 |37|PA13|SWDIO
104 |38|PA14|SWCLK
Mathias Larsen 9.2 105 |40|PB3|Digital output: LED 3
106 |41|PB4|Digital output: LED 4
107 |42|PB5|Digital output: LED 5
Mathias Larsen 10.1 108 |43|PB6|Digital output: Enable Pump 1
Mathias Larsen 9.2 109 |44|PB7|Digital output: Enable Pump 2
110 |45|PB8|Digital output: LED 6
Mathias Larsen 5.1 111 |46|PB9|LED 7
112 |47|VSS|Voltage source: Ground
113 |48|VDD|Voltage source: Power (+3V3)
Mathias Larsen 2.1 114
Mathias Larsen 23.7 115 == Distribution circuit ==
Mathias Larsen 23.4 116
Mathias Larsen 23.8 117 [[image:1790100104451-169.png]]
118
Mathias Larsen 23.7 119 === Green LED ===
Mathias Larsen 23.4 120
Mathias Larsen 23.7 121 The green LED is used to see if the fuse is ok
Mathias Larsen 23.5 122
Mathias Larsen 23.4 123 [[image:1790098808447-123.png]]
124
Mathias Larsen 23.7 125 === Current sense ===
126
Mathias Larsen 23.8 127 [[image:1790100157872-786.png]]
128
Mathias Larsen 23.9 129 === Power Amplifier ===
130
131 [[image:1790101431805-672.png]]
132
Mathias Larsen 23.7 133 === Voltage measurement ===
134
Mathias Larsen 23.9 135 [[image:1790101449150-901.png]]
136
Mathias Larsen 23.11 137 === 12V supply(Did not work) ===
Mathias Larsen 23.10 138
Mathias Larsen 24.1 139 The buck converter overheated under
140
Mathias Larsen 23.11 141 [[image:1790102044737-969.png||height="368" width="925"]]
142
Mathias Larsen 24.1 143 Mateksys PM20S-2 Power Module was used as a quick fix to ensure that it had 12V for the competion.
Mathias Larsen 23.11 144
Mathias Larsen 23.12 145
Mathias Larsen 23.11 146 === 5V and 3V3 supply ===
147
148 Is
149
Mathias Larsen 23.1 150 == Controll logic ==
Mathias Larsen 14.20 151
Mathias Larsen 22.2 152 === LED light ===
Mathias Larsen 14.22 153
Mathias Larsen 23.3 154 The programable red light is in the same RGB LED Diode
Mathias Larsen 23.1 155
Mathias Larsen 23.3 156 Direct sourcing of current from the microcontroller with a 350 ohm ressistor in series.
157
158 [[image:1790098512666-432.png]]
159
Mathias Larsen 22.2 160 === Buzzer/Brake light ===
Mathias Larsen 14.22 161
Mathias Larsen 23.1 162 PUMPS
Mathias Larsen 22.2 163
Mathias Larsen 14.21 164
Mathias Larsen 29.1 165 == ==
Mathias Larsen 22.1 166
Mathias Larsen 29.1 167 == ==
Mathias Larsen 23.1 168
Mathias Larsen 17.1 169 == Known issues ==
Mathias Larsen 14.20 170
171 12 V did not work
172
Mathias Larsen 16.1 173 Current measurement not tested
174
175
Mathias Larsen 14.1 176 == Features to add ==
177
178 Add mosfets to cut power if the Lv battery is to low to save power
Mathias Larsen 16.1 179
180 Add a power distrobution for Autonomus system
Mathias Larsen 17.1 181
182
183 == BOM(bill of materials) ==
Mathias Larsen 20.2 184
Mathias Larsen 21.1 185 |=Part Number|=Description|=Ref Des|=Qty|=Manufacturer|=MPN
186 |CC0603KRX5R6BB475|Chip Capacitor, 4.7µF +/-20%, 10V, 0603|C1|1|Yageo Group|CC0603KRX5R6BB475
187 |CL10B104KA8NNNC|MLCC, 0.1 uF, 25V, ±10%, X7R, 0603|C2, C3, C4, C8, C9, C10, C14, C15, C16|9|Samsung Electro-Mechanics|CL10B104KA8NNNC
188 |CL10B105KA8NFNC|MLCC, 1uF, 25V, 10%, X7R, 0603|C5, C7|2|Samsung Electro-Mechanics|CL10B105KA8NFNC
189 |CL10B103KB8NNNC|MLCC, 10nF, 50V, +125C, X7R, ±10%, 0603|C6, C101, C201, C301, C401, C501, C601, C701, C801, C901|10|(( fatal error – no data ))| |
190 |885012206020|MLCC, General Purpose, 0603, 100nF, 10V|C11|1|Wurth Elektronik|885012206020
191 |885012006051|MLCC, General Purpose, 0603, 10pF, 50V|C12, C13|2|Wurth Elektronik|885012006051
192 |885012208124|MLCC, General Purpose, 1206, 2.2µF, 100V|C17, C19|2|Wurth Elektronik|885012208124
193 |885012108022|MLCC, General Purpose, 1206, 10µF, 50V|C18|1|Wurth Elektronik|885012108022
194 |885012206071R|MLCC, General Purpose, 0603, 100nF, 25V|C20|1|Wurth Elektronik|885012206071R
195 |885012107014|MLCC, General Purpose, 0805, 10µF, 16V|C21, C22|2|Wurth Elektronik|885012107014
196 |MBASU105SB5104KFNA01|MLCC, 50V, 10%, X5R, 0.1uF, 0402|C23, C24|2|TAIYO YUDEN|MBASU105SB5104KFNA01
197 |GRM32ER71H475KA88L|MLCC, 1210, 4.7uF, 50V, ±10%, X7R|C902, C903|2|Murata|GRM32ER71H475KA88L
198 |GRM188R71A225KE15D|MLCC, 0603, 2.2uF, X7R, 10V|C904|1|Murata|GRM188R71A225KE15D
199 |CC0402KRX7R6BB104|Chip Capacitor, 100nF +/-20%, 10V, 0402|C905, C908|2|Yageo Group|CC0402KRX7R6BB104
200 |GRM1555C1H102JA01J|MLCC, 0402, 1nF, 50V, ±5%, C0G|C906|1|Murata|GRM1555C1H102JA01J
201 |GRM1555C1H4R3CA01D|MLCC, 0402, 4.3pF, 50V, C0G, ±0.25pF|C907|1|Murata|GRM1555C1H4R3CA01D
202 |GRM32ER61E226KE15L|MLCC, 1210, 22uF, 25V, X5R|C909, C910, C911, C912|4|Murata|GRM32ER61E226KE15L
203 |824094024|WE-TVS TVS Diode, SOT23-3L, 2 Channel, 24V, 38pF|D1|1|Wurth Elektronik|824094024
204 |824500261|WE-TVSP SMT Power TVS Diode, DO-214AC, 400W, 26VDC|D2|1|Wurth Elektronik|824500261
205 |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
206 |01550900DR|Fuseholder - Acs Nano|F101, F201, F301, F401, F501, F601, F701, F801, F901, F902, F903, F904|12|Littelfuse|01550900DR
207 |0466.125NR|Electric Fuse, Very Fast Blow, 0.125A, 125VAC/VDC, 1206|F102|1|Littelfuse|0466.125NR
208 |776231-1|Conn Shrouded Header, HDR 35 POS, 4mm, Thru-Hole|J1|1|TE Connectivity|776231-1
209 |76829-0002|Mega-Fit Straight Male Header, 2x2, 5.7mm Pitch|J2|1|Molex|76829-0002
210 |(4 pin header)|2.54mm pitch 1x4 vertical header|J3|1|(( fatal error – no data ))| |
211 |44914-0401|Conn Header Vert 4POS 3mm|J4|1|Molex|44914-0401
212 |1461247-3|Relay, Gen Purpose, SPST, 8A, 24V|K1|1|TE Connectivity|OJ-SH-124LMH,000
213 |784234510|WE-CNSA Common Mode Line Filter, 1210, 7850Ω, 200mA|L1|1|(( fatal error – no data ))| |
214 |74438323100|WE-MAPI SMT Power Inductor, 2510, 10µH, 0.9A, 733mΩ|L2, L3|2|Wurth Elektronik|74438323100
215 |XAL7070-651MEB|General Purpose Inductor, 0.65uH, 20%, 3028|L901|1|Coilcraft|XAL7070-651MEB|
216 |BSS123NH6327XTSA1|MOSFET N-CH 100V 0.19A SOT-23|Q201, Q202, Q803, Q804, Q905, Q906|6|Infineon|BSS123NH6327XTSA1
217 |BSS83PH6327XTSA1|SIPMOS Small-Signal Transistor, -0.33A, -60V, SOT-23|Q801, Q802|2|Infineon|BSS83PH6327XTSA1
218 |IAUCN04S7L028ATMA1|Mosfet, N-ch, 40V, 100A|Q901, Q902|2|Infineon|IAUCN04S7L028ATMA1
219 |BSC084P03NS3GATMA1|P-Channel OptiMOS P3, -30V VDS, -78.6A ID, PG-TDSON-8-1|Q903, Q904|2|Infineon|BSC084P03NS3GATMA1
220 |(( TBD ))|Generic Resistor, 350Ω, 0603|R104, R204, R304, R404, R504, R606, R704, R804, R904|9|(( TBD ))| |
221 |(( TBD ))|Generic Resistor, 1KΩ, 0603|R205, R206, R807, R808, R913, R914|6|(( TBD ))| |
222 |(( TBD ))|Generic Resistor, 10KΩ, 0603|R1, R207, R208, R805, R806, R809, R810, R811, R812, R911, R912, R915, R916|13|(( TBD ))| |
223 |(( TBD ))|Generic Resistor, 1.6KΩ, 0603|R2|1|(( TBD ))| |
224 |(( TBD ))|Generic Resistor, 2.2Ω, 0603|R3|1|(( TBD ))| |
225 |(( TBD ))|Generic Resistor, 27KΩ, 0603|R4|1|(( TBD ))| |
226 |(( TBD ))|Generic Resistor, 5.1KΩ, 0603|R5|1|(( TBD ))| |
227 |WSLF25122L000FEA|Res Metal Strip 2512, 0.002Ω, 1%, 5W|R101, R201, R301, R401, R501, R601, R701, R801, R901|9|Vishay|WSLF25122L000FEA
228 |CR0603-FX-1002ELF|SMD Resistor, 10kΩ, ±1%, 100mW, 0603|R102, R105, R202, R302, R402, R502, R602, R702, R802, R902|10|Bourns|CR0603-FX-1002ELF
229 |CR0805-JW-472ELF|SMD Resistor, 4.7kΩ, ±5%, 125mW, 0805|R103, R203, R303, R403, R503, R603, R703, R803, R903|9|Bourns|CR0805-JW-472ELF
230 |CR0603-FX-1001ELF|RES SMD 1K Ohm, 1%, 1/10W, 0603|R106|1|Bourns|CR0603-FX-1001ELF
231 |CRCW060347K5FKEA|Res Thick Film 0603, 47.5KΩ, 1%, 1/10W|R905|1|Vishay|CRCW060347K5FKEA
232 |RC0603FR-13100KL|Chip Resistor, 100KΩ, ±1%, 0.1W, 0603|R906|1|Yageo Group|RC0603FR-13100KL
233 |AC0402FR-0712K1L|Res Thick Film 0402, 12.1KΩ, 1%, 1/16W|R907|1|Yageo Group|AC0402FR-0712K1L
234 |CRCW060340K2FKEA|Res Thick Film 0603, 40.2KΩ, 1%, 1/10W|R908|1|Vishay|CRCW060340K2FKEA
235 |CRCW06039K53FKEA|Res Thick Film 0603, 9.53KΩ, 1%, 1/10W|R909|1|Vishay|CRCW06039K53FKEA
236 |WSR33L000FEA|Res Metal Strip 4527, 0.003Ω, 1%, 3W|R910|1|Vishay|WSR33L000FEA
237 |STM32G431CBT6|MCU 32-bit ARM Cortex M4, 128KB Flash, 48-Pin LQFP|U1|1|STMicroelectronics|STM32G431CBT6
238 |NCV7344D13R2G|CAN FD Transceiver, ISO 11898-2, 5Mbps, SOIC-8|U2|1|onsemi|NCV7344D13R2G
239 |INA4180A4IPWR|26V Quad Channel Current Sense Amplifier, 14-TSSOP|U3, U4, U5|3|Texas Instruments|INA4180A4IPWR
240 |AP64060WU-7|DC-DC Synchronous Step Down, 4.5-40V to 0.8-26V, 0.6A, TSOT-26|U6|1|Diodes Inc.|AP64060WU-7
241 |AP2112K-3.3TRG1|Fixed Positive LDO, 3.3V, 0.4V Dropout, PDSO5|U7|1|Diodes Inc.|AP2112K-3.3TRG1
242 |LM5148RGYR|3.5-80V Current Mode Synchronous Buck Controller, 24-VQFN|U801|1|Texas Instruments|LM5148RGYR
243 |ASE-8.000MHz-E-T|Crystal Oscillator, 8MHz, 3.3V, 15pF, 4-Pin SMD|Y1|1|Abracon|ASE-8.000MHZ-E-T
Mathias Larsen 30.2 244
245
246
247 = AR27 =
248
249 Here is the documentaion for AR27
250
Mathias Larsen 31.1 251 == Changes ==
Mathias Larsen 30.2 252
Mathias Larsen 31.1 253 == Supply circuit plan ==
254
255 === ===
256
Mathias Larsen 30.2 257