ControlBoard
About the ControlBoard PCB
ControlBoard is an open source STM32 PCB design by OpenVVVF, published on GitHub under the CERN-OHL-W-2.0 license. It is a 8-layer board measuring 260 × 45 mm, with 239 components from 44 distinct parts.
Its main chip is the STM32H723ZGT6, from the STM32 family. Other key parts include the TPS389006ADJRTER, MAX22530AWE+, ISO1042BDWVR, CY15B102Q-SXET and ISO1212DBQ. By type, the board carries 92 resistors, 84 capacitors, 17 ICs, 14 connectors, 5 test points and 2 crystals.
It belongs with the displays & leds designs in this gallery.
From the project
Open-source high-power 3-phase VSI with independent safety coprocessor, fully isolated gate drives, and node-based codegen configuration tools. Firmware, RTE, and telemetry live in OpenVVVF/RTE.
Our current in-progress build photos for size 2 are below, thanks again to our sponsors for helping make this possible
An open-source, high-power voltage-source inverter (VSI) for 3-phase AC drives. The design centres on a dual-MCU control board with an independent safety coprocessor, fully isolated gate drives and sensing, dual isolated CAN buses, and a control stack configurable through node-based codegen tools.
Main components on the ControlBoard
ControlBoard bill of materials (BOM)
239 components, 44 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TPS389006ADJRTER | QFN50P300X300X80-17N-D | IC1 |
| 1 | MAX22530AWE+ | SOIC127P1032X265-16N | IC2 |
| 4 | ISO1042BDWVR | SOIC127P1150X280-8N | IC3, IC5, IC6, IC7 |
| 1 | CY15B102Q-SXET | SOIC127P800X203-8N | IC4 |
| 1 | STM32H723ZGT6 | LQFP-144_20x20mm_P0.5mm | U1 |
| 4 | ISO1212DBQ | SSOP-16_3.9x4.9mm_P0.635mm | U2, U4, U5, U6 |
| 1 | LT3080IQ#PBF | TO-263-5_TabPin6 | U3 |
| 2 | BTS462TATMA1 | TO-252-4 | U7, U8 |
| 1 | STM32G474RCT3 | LQFP-64_10x10mm_P0.5mm | U9 |
| 1 | STS41A-AWLB-R3 | STS41AAWLBR3 | U14 |
| 2 | 8MHz | Crystal_HC49-4H_Vertical | Y1, Y2 |
| 3 | B2B-XH-AM(LF)(SN) B2B-XH-AM_LF__SN_ | B2BXHAMLFSN | J1, J4, J5 |
| 1 | TSW-110-21-L-D-LL | PinHeader_2x10_P2.54mm_Vertical-31mm | J2 |
| 4 | 22-04-1041 | SHDR4W64P0X250_1X4_950X580X1210P | J3, J6, J8, J9 |
| 2 | SSW-108-01-L-D | SSW-108-01-L-D | J7, J12 |
| 2 | SSW-103-01-L-D | SSW-103-01-L-D | J10, J13 |
| 1 | SSW-110-01-F-D | SSW-110-01-F-D | J14 |
| 1 | 524265-E | 524265E | J15 |
| 2 | ACT45B-101-2P-TL003 | ACT45B1012PTL003 | FL1, FL2 |
| 8 | 971350581 | 971350581 | H1, H2, H3, H4, H5, H6, H7, H8 |
Show 24 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | RKE-1205S/H RKE-1205S_H | RKE1205SH | PS1, PS2, PS4 |
| 1 | RD7-12S033R | RD712S033R | PS6 |
| 2 | TS40-66-50-R-260-SMT-TR | TS406650R260SMTTR | S1, S2 |
| 5 | TestPoint | TestPoint_Loop_D2.54mm_Drill1.5mm_Beaded | TP1, TP3, TP4, TP5, TP6 |
| 4 | SZMMSZ4678T1G | SOD3716X135N | Z1, Z2, Z3, Z4 |
| 3 | MM3Z3V0ST1G | SOD2512X100N | Z5, Z6, Z7 |
| 1 | LTST-C230CKT | LEDC3216X120N | LED1 |
| 1 | LTST-C230GKT | LEDC3216X120N | LED2 |
| 21 | 10nF | C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C2, C3, C4, C5, C21, C22, C23, C24 +13 |
| 36 | 100nF | C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C9, C10, C13, C14, C15, C17, C27, C28 +28 |
| 8 | 1uF | C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C11, C12, C40, C134, C136, C147, C192, C200 |
| 10 | 22pF | C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C18, C19, C20, C26, C30, C33, C35, C36 +2 |
| 7 | 10uF | C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C140, C141, C189, C198, C208, C209, C210 |
| 2 | 2.2uF | C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C190, C191 |
| 4 | 2k | R_1210_3225Metric_Pad1.30x2.65mm_HandSolder | R1, R7, R17, R23 |
| 9 | 1k | R_1210_3225Metric_Pad1.30x2.65mm_HandSolder | R2, R8, R18, R24, R30, R87, R91, R93 +1 |
| 16 | 250k | R_1210_3225Metric_Pad1.30x2.65mm_HandSolder | R3, R4, R5, R6, R9, R10, R11, R16 +8 |
| 2 | 4.7k | R_1210_3225Metric_Pad1.30x2.65mm_HandSolder | R12, R31 |
| 33 | 10k | R_1210_3225Metric_Pad1.30x2.65mm_HandSolder | R14, R15, R39, R41, R43, R45, R47, R49 +25 |
| 1 | 3k | R_1210_3225Metric_Pad1.30x2.65mm_HandSolder | R29 |
| 2 | 120 | R_1210_3225Metric_Pad1.30x2.65mm_HandSolder | R37, R38 |
| 16 | 20k | R_1210_3225Metric_Pad1.30x2.65mm_HandSolder | R40, R42, R44, R46, R48, R50, R52, R54 +8 |
| 8 | 560 | R_1210_3225Metric_Pad1.30x2.65mm_HandSolder | R68, R69, R76, R77, R80, R81, R84, R85 |
| 1 | 499k | R_1210_3225Metric_Pad1.30x2.65mm_HandSolder | R86 |
ControlBoard design files
The KiCad project lives in the OpenVVVF/Hardware repository on GitHub; these links point at the commit this page was built from.
ControlBoard: common questions
What microcontroller does the ControlBoard use?
The ControlBoard is built around the STM32H723ZGT6, from the STM32 family.
How big is the ControlBoard PCB?
The ControlBoard measures 260 × 45 mm, has 8 copper layers and is 1.6 mm thick.
How many components are on the ControlBoard?
239 components, from 44 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the ControlBoard design files?
From the OpenVVVF/Hardware repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the ControlBoard design in my own project?
Yes, under the terms of its CERN-OHL-W-2.0 license, which OpenVVVF chose for the repository.
Can I test firmware for the ControlBoard without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
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