4 layers100 × 82.6 mm
HV ECU
outlandnish/subaru-brz-hv-ecu
HV Power Management ECU for my Subaru BRZ EV Conversion
125 partsMIT
2 layers77 × 74.5 mm
My TPL interface for NXP's MC33664/33771C platform
- Size
- 77 × 74.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 33
- Nets
- 49
- Pads
- 184
- Tracks, vias
- 313, 32
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 20 Dec 2025
- Updated
- 20 Dec 2025
Overview
Bms is an open-source printed circuit board by p0lyh3dron, from the p0lyh3dron/tpl_interface repository on GitHub. It is a 2-layer board of 77 × 74.5 mm with 33 parts on 49 nets, routed with 313 tracks and 32 vias.
It is built around the MC33664ATL1EG, L7824 and LM74500QDDFRQ1, with the HM2103NL among its other parts. Its parts include 6 ICs, 5 capacitors, 4 resistors, 3 switches and 2 connectors. It belongs with the power boards and the RP2040 boards of this library.
Main components
4
MC33664ATL1EG
SO-16-40℃~+125℃ 4.5V~5.5V SPI SO-16 Interface - Specialized ROHSNXP SemiconductorsInterface - Specialized
L7824
TO-220ST0℃~+125℃@(Tj) 1 1.5A 160uV 24V 2V@(1A) 38V 67dB@(120Hz) 8mA Fixed Over Temperature Protection、Short Circuit Protection Positive TO-220ST Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSOSENVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
LM74500QDDFRQ1
SOT-23-8-THIN-40℃~+125℃ 2Ω 3.2V~65V Reverse voltage protection、Integrated charge pump SOT-23-8-THIN Power Distribution Switches ROHSTexas InstrumentsPower Distribution SwitchesHM2103NL
SMD-6SMD-6 New Arrivals ROHSPulse ElecUncategorised
README
README.mdtpl_interface
Parts
33| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | C | Capacitor_SMD:CP_Elec_3x5.3 | C1, C4, C5, C6 |
| 4 | R | Resistor_SMD:R_0805_2012Metric | R1, R2, R3, R4 |
| 3 | ASSR-1218 | ssr:Untitled | U2, U3, U4 |
| 3 | SW_Push | Button_Switch_THT:SW_PUSH_6mm | SW1, SW2, SW3 |
| 2 | Screw_Terminal_01x02 | TerminalBlock_Altech:Altech_AK100_1x02_P5.00mm | J1, J2 |
| 1 | Buzzer | Buzzer_Beeper:Buzzer_12x9.5RM7.6 | BZ1 |
| 1 | C | Capacitor_SMD:C_0805_2012Metric | C3 |
| 1 | D_TVS | bms:tvs4.2mm | D1 |
| 1 | Fuse | Fuse:Fuseholder_Clip-5x20mm_Littelfuse_100_Inline_P20.50x4.60mm_D1.30mm_Horizontal | F1 |
| 1 | HM2103NL | hm2103nl:HM2103NL_PUL | T1 |
| 1 | Jumper_2_Open | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP1 |
| 1 | L7824 | Package_TO_SOT_THT:TO-220-3_Vertical | U5 |
| 1 | LM74500QDDFRQ1 | lm74500:DDF0008A-IPC_A | U6 |
| 1 | LOGO | bms:decal | G*** |
| 1 | MC33664ATL1EG | mc336:SO16_NXP | U1 |
| 1 | NMOS | Package_TO_SOT_THT:TO-220-3_Vertical | Q1 |
| 1 | RaspberryPi_Pico | Module:RaspberryPi_Pico_Common_Unspecified | A1 |
| 1 | SSD1306 | ssd:SSD1306 | DS1 |
The 29 most common of 33 parts.
Questions
How big is the Bms PCB?
It measures 77 × 74.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Bms use?
33 parts, built around the MC33664ATL1EG, L7824, LM74500QDDFRQ1 and HM2103NL. 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 Bms KiCad files?
From the p0lyh3dron/tpl_interface repository on GitHub, at the commit this page was made from: the board is bms.kicad_pcb and its schematic bms.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Bms design in my own project?
Its repository states no licence, so its author keeps all rights: ask p0lyh3dron before reusing the design.
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