TI’s single-chip battery gasoline gauges, the BQ41Z90 and BQ41Z50, lengthen battery runtime by as much as 30% utilizing a predictive modeling algorithm. Their adaptive Dynamic Z-Observe algorithm delivers state-of-charge and state-of-health accuracy inside 1%, enabling exact monitoring in battery-powered units corresponding to laptops and e-bikes.
The gasoline gauges present correct battery capability readings below various load situations, permitting designers to right-size batteries with out overprovisioning. The BQ41Z90 integrates a gasoline gauge, monitor, and protector for 3- to 16-cell Li-ion battery packs, whereas the BQ41Z50 helps 2 to 4 cells. Integration reduces board complexity and may shrink footprint by as much as 25% in comparison with discrete implementations.
Every battery pack supervisor screens voltage, present, temperature, accessible capability, and different key parameters utilizing built-in analog peripherals and an ultra-low-power 32-bit RISC processor. Each units report knowledge to the host system over an SMBus v3.2-compatible interface, whereas the BQ41Z90 additionally helps I²C. It moreover allows simultaneous present and voltage conversion for real-time energy calculations and helps sense resistors as little as 0.25 mΩ.
Pre-production portions of the BQ41Z90 and manufacturing portions of the BQ41Z50 can be found now on TI.com. Analysis modules, reference designs, and simulation fashions are additionally accessible.
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