Design Files
Receive the full breakdown. See the product footprint and more in the eCad file.
18 Channel Li-Ion Battery Cell Controller IC ASIL D
The BMA7118 is an automotive lithium-ion (Li-ion) battery cell controller integrated circuit (IC) with a dedicated, high-accuracy analog-to-digital converter (ADC) per voltage measurement channel with high synchronization capability—a requirement for electrochemical impedance spectroscopy (EIS).
Upgrading to EIS is lower in cost, due to pin compatibility and shared software across the product family. BMA7118 offers low 5 mA current consumption due to its integrated DC-to-DC converter. As a fully redundant and independent internal architecture, it achieves automotive safety integrity level ASIL D functional safety.
Product Details
Features
- Supports 8 to 18 cells per device
- Dedicated, high-accuracy ADC per voltage measurement channel with high synchronization capability required for EIS
- Typical ±0.8 mV measurement error with ultra-low long-term drift
- ISO 26262 ASIL D support for cell voltage and temperature measurements
- External temperature and auxiliary voltage measurements measurement capability
- Communication through isolated daisy chain up to 62 nodes or serial peripheral interface (SPI)
- Diagnostics, functional safety and robustness
- Low external bill of materials (BOM) cost
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Design Resources
Hardware
Quick reference to our
board types.
2 hardware offerings
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Evaluation and Development BoardsBMA7118 Evaluation Board with Isolated Daisy Chain
Active -
Evaluation and Development BoardsBMA7X18 Evaluation Board with Isolated Daisy Chain
Preproduction
Software
Quick reference to our software types.
1 software file
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Application Example Software
NXP Battery Management Software Development Kit and Toolchain
Note: For better experience, software downloads are recommended on desktop.