Design Files
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18 Channel Li-Ion Battery Cell Controller IC ASIL D with EIS
BMA7418 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. Electrochemical impedance spectroscopy (EIS) is supported by a high synchronization capability and integrated Discrete Fourier Transform (DFT) per measurement channel. With BMA7118 and BMA7418 in the same product family—having pin compatibility and using the same software—the two are interchangeable. BMA7418 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
- High synchronization capability and integrated DFT per measurement channel for EIS
- Typical ±0.8 mV measurement error with ultra-low long-term drift
- ISO 26262 ASIL D support for cell voltage and temperature measurement capability
- External temperature and auxiliary voltage measurements
- Isolated daisy chain up to 62 nodes or serial peripheral interface (SPI) communication
- 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 BoardsBMA7X18 Evaluation Board with Isolated Daisy Chain
Preproduction -
Evaluation and Development BoardsSolution for Electrochemical Impedance Spectroscopy (EIS) in Battery Management Systems
Preproduction
Software
Quick reference to our software types.
2 software files
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Debugging and Visualization Tools
Evaluation GUI
Note: For better experience, software downloads are recommended on desktop.