Hi TI Team,
We are currently evaluating the usability of BQ79606A-Q1 in a BMS (battery managment system) design for one of our customers.
The component is advertized as having a "hardware protector" for the cells.
We would like to implement a hardware protection layer which (once configured) would be independent from the host microcontroller (software).
The protection provided by the hardware layer will concern the cell over/undervoltage and over/under temperature.
One way to do this would be:
1. Save the configuration and OV, UV, OT, UT thresholds in the NVR of the component
2. Perform unitary validation tests on each channel and each function Afterwards, at wake-up the BA79606A will retrieve its configuration from the OTP pages and act as an independent hardware protector (according to the predefined OV, UV, OT, UT thresholds). The idea behind this architecture is to restrain the ASIL/SIL qualification effort to the hardware side.
Does the component allows to achieve a "hardware protection" independent of a microcontroller?
In your view is any ASIL lever reachable with this configuration? Can you provide us some support/guidance in achieving this goal? If not can you recommend other components that are able to perform this task (real independent hardware protector)?
Thank You for Your help!
