Features
• AEC-Q100 qualified
• Measures 4 to 14 cells in series, with 0 μs desynchronization delay between
samples. Supports also busbar connection without altering cell results
• Coulomb counter supporting pack overcurrent detection in both ignition on and
off states. Fully synchronized current and voltage samples
• 16-bit voltage ADC with maximum error of ±2 mV in the [0.5 – 4.3] V range, after
soldering, in [-40; +105] °C Tj range
• 2.66 Mbps isolated serial communication with regenerative buffer, supporting
dual access ring. Less than 4 us latency between start of conversion of the 1st
and the 31st device in a chain. Less than 4 ms to convert and read 96 cells in a
system using 8 L9963E and L9963T transceiver. Less than 8 ms to convert and
read 210 cells in a system using 15 L9963E and L9963T transceiver. Less than
16 ms to convert and read 434 cells in a system using 31 L9963E and L9963T
transceiver. Supports both XFMR and CAP based isolation
• 200 mA passive internal balancing current for each cell in both normal and
silent-balancing mode. Possibility of executing cyclic wake up measurements.
Manual/Timed balancing, on multiple channels simultaneously; Internal/External
balancing
• Fully redundant cell measurement path, with ADC Swap, for enhanced safety
and limp home functionality
• Intelligent diagnostic routine providing automatic failure validation. Redundant
fault notification through both SPI Global Status Word (GSW) and dedicated
FAULT line
• Two 5 V regulators supporting external load connection with 25 mA (VCOM) and
50 mA (VTREF) current capability
• 9 GPIOs, with up to 7 analog inputs for NTC sensing
• Robust hot-plug performance. No Zeners needed in parallel to each cell
• Full ISO26262 compliant, ASIL-D systems ready