CAN Communication Board Design

Thought

flux

Work completed

Microcontroller & CAN Interface (all sub-steps)
BMS setup (all sub-steps)
Power tree and EMI filters
CAN-to-MCU and BMS interconnections on schematic
Connected CAN bus nets (TX/RX, choke, termination, TVS)

Tasks remaining

Design & Verification:
- Run ERC/DRC checks for high-current and isolation clearances
- Review part availability and update BOM
Net connections on BMS AFE:
- Add DatasheetURL property to the 7-series Li-ion BMS AFE component
- Retrieve pin descriptions for pins 1–7 and set CellPin1Name–CellPin7Name
- Rename AFE cell voltage pins to Vcell1–Vcell7
- Wire Vcell1–Vcell7 to the cell tap connector
- Connect thermistor, current-sense, contactor-driver, precharge, VIN protection, and pack-connector nets

Success criteria

✅ Isolated J1939 CAN interface with termination, ESD, choke
✅ MCU with CAN integrated
✅ 7-series BMS AFE and supporting circuits placed
✅ 12 V, 5 V, 3.3 V rails defined with regulators and filters
⚠️ ERC/DRC checks not yet run
⚠️ BMS AFE pin properties and net wiring incomplete

Recommended next step

Run ERC/DRC checks to verify clearances, then complete the remaining net connections and update the BMS AFE pin properties and datasheet link.

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Description

High-Current 28V 7S Li-Ion Battery Management System with Integrated CAN J1939 and Advanced Power Management

Properties

System Architecture

Diagram

Pricing & Availability

Distributor	Qty 1
Arrow	$2.92–$4.18
Digi-Key	$4.09–$5.24
LCSC	$6.58–$6.73
Mouser	$5.82
TME	$0.29
Verical	$10.37–$13.20

Controls

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Schematic