4 layers53.5 × 38 mm
4 layers55 × 55 mm
Caw bms
noxrick91/caw-bms228锂电池管理系统
- Size
- 55 × 55 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 154
- Nets
- 159
- Pads
- 479
- Tracks, vias
- 668, 228
- Pours
- 183
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 23 Dec 2023
- Updated
- 15 Mar 2026
Overview
Caw bms is an open-source printed circuit board by noxrick91, from the noxrick91/caw-bms repository on GitHub, published under the GPL-3.0 licence. It is a 4-layer board of 55 × 55 mm with 154 parts on 159 nets, routed with 668 tracks and 228 vias.
It is built around the TJA1051T/3/1J, TPS5450DDAR and WAFER-SH1.0-2PWB, with the BQ7692003PW, TLV76733DRVR and CSD13381F4 among its other parts. Its parts include 49 resistors, 44 capacitors, 12 ICs, 12 diodes and 11 transistors. It belongs with the power boards and the STM32 boards of this library.
Main components
12
TJA1051T/3/1J
SOIC-8-150mil-40℃~+150℃ 110mA 4.5V~5.5V 5Mbps CAN FD Transceiver SOIC-8-150mil CAN Transceivers ROHSNXP SemiconductorsCAN Transceivers
TPS5450DDAR
SOP-8-EP-150mil-40℃~+125℃@(TJ) 1 1.221V~31.32V 3mA 5.5V~36V 500kHz 5A Adjustable Buck Built-in No Overcurrent Protection、Cycle-by-cycle current limiting、Hiccup current limiting Step-down type SOP-8-EP-150mil DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
WAFER-SH1.0-2PWB
SMD,P=1mm,卧贴-40℃~+85℃ 1 1A 1mm 1x2P 2 2P 3.15mm 4.35mm 4.3mm 50V Auxiliary Solder Pin Beige Brass LCP SH Surface Mount, Right Angle Tin SMD,P=1mm,卧贴 Wire To Board Connector ROHSXUNPUWire To Board Connector
BQ7692003PW
TSSOP-20-40℃~+85℃ 3~5 50mA 60uA 6V~25V I2C Lithium Battery、LiFePO4 Battery Overcurrent Protection、Short-Circuit Protection、电芯均衡、过压保护、Undervoltage Protection Protection IC、Balancing IC Support TSSOP-20 Battery Management ROHSTexas InstrumentsBattery Management
TLV76733DRVR
WSON-6(2x2)-40℃~+125℃@(Tj) 1 1.4V@(1A) 16V 1A 3.3V 46dB@(1MHz) 50uA 60uVrms Fixed Over Current Protection、Over Temperature Protection、Soft Start Positive WSON-6(2x2) Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
CSD13381F4
PicoStar-3-55℃~+150℃ 1 N-channel 1.1V 1.4nC@4.5V 12V 2.1A 200pF 3.3pF 400mΩ@1.8V 500mW 62pF N-Channel PicoStar-3 MOSFETs ROHSTexas InstrumentsMOSFETs
EDZVT2R5.6B
SOD-5231 Independent 150mW 1uA@2.5V 200Ω 5.49V~5.73V 5.6V 60Ω SOD-523 Zener Diodes ROHSROHM SemiconductorZener Diodes
BSC0702LS
TDSON-8(5x6)-55℃~+150℃ 1 N-channel 2.3V 2.7mΩ@10V 30nC@4.5V 4.4nF 58pF 60V 83W 84A TDSON-8(5x6) MOSFETs ROHSInfineon TechnologiesMOSFETs
HOJLRX2512-2W-1.5MR-1%
25121.5mΩ 2W Current Sense Resistor SMD ±1% 2512 Current Sense Resistors / Shunt Resistors ROHSMilliohmCurrent Sense Resistors / Shunt Resistors
WAFER-SH1.0-6PWB
SMD,P=1mm,卧贴-40℃~+85℃ 1 1A 1mm 1x6P 3.15mm 4.3mm 50V 6 6P 8.35mm Auxiliary Solder Pin Beige Brass LCP SH Surface Mount, Right Angle Tin SMD,P=1mm,卧贴 Wire To Board Connector ROHSXUNPUWire To Board Connector
AO3400A
SOT-23-55℃~+150℃ 1 N-channel 1.45V 1.4W 30V 48mΩ@2.5V 5.7A 50pF 630pF 75pF 7nC@10V N-Channel SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
B540C-13-F-MS
SMC-65℃~+125℃ 1 Independent 175A 40V 500uA@40V 5A 750mV@5A SMC Schottky Diodes ROHSMSKSEMISchottky Diodes
README
README.mdCawBMS - 锂电池管理系统
Parts
154| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | 10k | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R3, R6, R7, R8, R12, R13, R20, R22, R24, R26, R28, R31, R46, R47 |
| 12 | 0.1uF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C44 |
| 7 | 100 | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R19, R21, R23, R25, R27, R29, R32 |
| 6 | 0.22uF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C12, C13, C14, C15, C16, C17 |
| 6 | WAFER-SH1.0-2PWB | Rick_Connector:CONN-SMD_2P-P1.00_XUNPU_WAFER-SH1.0-2PWB | U1, U2, U5, U10, U11, U12 |
| 5 | 28.7 | Resistor_SMD:R_2010_5025Metric_Pad1.40x2.65mm_HandSolder | R14, R15, R16, R17, R18 |
| 5 | CSD13381F4 | Rick_MOSFET:CSD13381F4_PICOSTAR-3_L1.0-W0.6-P0.40-S0.65-BL-1 | Q1, Q2, Q3, Q4, Q5 |
| 5 | EDZVT2R5.6B | Diode_SMD:D_SOD-523 | D4, D5, D6, D7, D8 |
| 4 | 0.1uF 50V | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C22, C23, C24, C36 |
| 4 | 0.1uF 50V | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C26, C27, C28, C29 |
| 4 | BLM18EG221SN1D | Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | L2, L3, L4, L5 |
| 4 | BSC0702LS | Rick_MOSFET:BSC0702LS_PG-TDSON-8_L5.0-W6.0-P1.27-BL-EP | Q6, Q7, Q9, Q10 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_2.2mm_M2_Pad_Via | H1, H2, H3, H4 |
| 3 | 0 | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R2, R5, R42 |
| 3 | 10k 0.1% | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R1, R4, R43 |
| 3 | 1M | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R38, R40, R41 |
| 3 | HoJLRX2512-2W-1.5mR-1% | Resistor_SMD:R_2512_6332Metric_Pad1.40x3.35mm_HandSolder | R34, R35, R36 |
| 3 | WAFER-SH1.0-6PWB | Rick_Connector:CONN-SMD_6P-P1.00_XUNPU_WAFER-SH1.0-6PWB | CN1, CN2, CN6 |
| 2 | 0.01uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C33, C35 |
| 2 | 100 0.1% | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R33, R37 |
| 2 | 10uF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C42, C43 |
| 2 | 18pF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C40, C41 |
| 2 | 1uF 50V | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C19, C20 |
| 2 | 22uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C38, C39 |
| 2 | 4.7uF 50V | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C30, C31 |
| 2 | 510 | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R10, R11 |
| 1 | 0.01uF 50V | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C32 |
| 1 | 100 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R45 |
| 1 | 10uF 50V | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C21 |
| 1 | 120Ω 1% | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R9 |
| 1 | 1N4148WS T4 | Diode_SMD:D_SOD-323_HandSoldering | D9 |
| 1 | 1uF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C37 |
| 1 | 3.16k 0.1% | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R44 |
| 1 | 39nH | Inductor_SMD:L_0402_1005Metric_Pad0.77x0.64mm_HandSolder | L1 |
| 1 | 3k 0.1% | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R49 |
| 1 | 4.7uF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C18 |
| 1 | 470pF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C25 |
| 1 | 499k | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R39 |
| 1 | 75k 0.1% | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R48 |
| 1 | AO3400A | Package_TO_SOT_SMD:SOT-23 | Q11 |
| 1 | B+ | CawBMS:POWER_PAD | H7 |
| 1 | B- | CawBMS:POWER_PAD | H8 |
| 1 | B540C-13-F | Rick_Diode:B540C-13-F | D13 |
| 1 | BQ7692003PW | Rick_BMS:BQ7692003PW_TSSOP-20_L6.5-W4.4-P0.65-LS6.4-BL | U7 |
| 1 | BZX585-B16,115 | Diode_SMD:D_SOD-523 | D10 |
| 1 | CSTCE16M0V53-R0 | Rick_Crystal:Crystal_SMD3213-3P | X1 |
| 1 | ES1D | Diode_SMD:D_SMA_Handsoldering | D11 |
| 1 | G*** | Library:kibuzzard-6582907D | kibuzzard-6582907D |
| 1 | G*** | kibuzzard-69B05E76 | kibuzzard-69B05E76 |
| 1 | G*** | kibuzzard-69B5918C | kibuzzard-69B5918C |
| 1 | G*** | Library:kibuzzard-65829086 | kibuzzard-65829086 |
| 1 | HV1C337M0607PZ | Capacitor_SMD:CP_Elec_6.3x5.8 | C34 |
| 1 | LM66200DRLR | Rick_Diode:LM66200DRLR | IC1 |
| 1 | NCP15XH103F03RC | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R30 |
| 1 | P+ | CawBMS:POWER_PAD | H5 |
| 1 | P- | CawBMS:POWER_PAD | H6 |
| 1 | PWR_LED | LED_SMD:LED_0402_1005Metric_Pad0.77x0.64mm_HandSolder | D1 |
| 1 | Q13FC13500004 | Rick_Crystal:Q13FC13500004 | XTAL1 |
| 1 | SMAJ24CA | Diode_SMD:D_SMA_Handsoldering | D12 |
| 1 | STA_LED | LED_SMD:LED_0402_1005Metric_Pad0.77x0.64mm_HandSolder | D2 |
| 1 | STM32L431CCTx | Package_QFP:LQFP-48_7x7mm_P0.5mm | U4 |
| 1 | TJA1051T/3/1J | Rick_CAN:TJA1051T31J_SOIC-8_L4.9-W3.9-P1.27-LS6.0-BL | U6 |
| 1 | TLV76733DRVR | Rick_Regulator_Linear:TLV76733DRVR_SON65P200X200X80-7N | U9 |
| 1 | TP0610K-T1-GE3 | Package_TO_SOT_SMD:SOT-23 | Q8 |
| 1 | TPS5450DDAR | Rick_Power:TPS5450DDAR | U8 |
| 1 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
| 1 | WAFER-SH1.0-4PWB | Rick_Connector:CONN-SMD_4P-P1.00_WAFER-SH1.0-4PWB | CN5 |
| 1 | ZEMS0650-150M | Inductor_SMD:L_7.3x7.3_H3.5 | L6 |
The 153 most common of 154 parts.
Questions
How big is the Caw bms PCB?
It measures 55 × 55 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Caw bms use?
154 parts, built around the TJA1051T/3/1J, TPS5450DDAR, WAFER-SH1.0-2PWB and BQ7692003PW. 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 Caw bms KiCad files?
From the noxrick91/caw-bms repository on GitHub, at the commit this page was made from: the board is PCB/CawBMS.kicad_pcb and its schematic PCB/BQ76920.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Caw bms design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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