ABLIC launches battery monitoring protection ICs
ABLIC has launched the S-19193 series of automotive 3 to 6-cell battery monitoring protection ICs fr or EVs and e-bikes that require functional safety compliant with ISO26262 .
In the past, the conventional method of achieving fail-safe functional safety was to use a microcontroller (MCU) together with a high performance analogue front-end (AFE) to monitor automotive battery overcharge and overdischarge conditions. This ensured the safety of a driver by stopping the vehicle in the event of an actual failure or malfunction. Tthere was no requirement for continued monitoring of batteries after the vehicle had safely stopped.
However, with the evolution of automated driving technologies, it is expected that there will be an increase in the number of cases where the system, rather than the driver, handles any problems that occur, so fail-operational and fail-degraded methodologies are becoming increasingly important.
According to ABLIC, the S-19193 series makes it possible to continue battery monitoring as a secondary system even in the event if the conventional monitoring system (primary) fails, and to achieve a safer BMS that is both fail-operational and fail-degraded compliant.
The S-19193 series also makes it possible to configure a stand-alone operation secondary monitoring circuit which does not require MCU control, which can also contribute to a reduction in the number of design processes.
A Safety Manual is is available for download to support BMS functional safety design using the S-19193 Series. The product is also compliant with the PPAP (Production Part Approval Process) established by the US Automotive Industry Action Group (AIAG), and is also planned to be made compliant with AEC-Q100 Grade1 quality standards for automotive ICs.
