Protection
The design integrates a full set of battery cell protections, including: cell overvoltage, cell undervoltage, two
levels of overcurrent discharge, overcurrent charge, discharge short circuit, overtemperature and
undertemperature protections. Furthermore, this design also monitors loss of system level faults, including: cell
open wire, host watch dog, charge and discharge MOSFETs faults, MOSFETs overtemperature and so on. Some
of the protections were tested in a TI lab.
Figure 3-5. Level 1 Overcurrent Discharge
Figure 3-6. Overcurrent Charge
Figure 3-7. Discharge Short Circuit
Hardware, Software, Testing Requirements, and Test Results
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12 10s–16s Battery Pack Reference Design With Accurate Cell Measurement and
High-Side MOSFET Control
TIDUEY5 – JANUARY 2021
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