Texas Instruments' bq27532-G1 system-side, Li-Ion battery management unit is a microcontroller peripheral that provides Impedance Track™ fuel gauging and charging control for single-cell Li-Ion battery packs. The fuel gauge requires little system microcontroller firmware development. Together with bq2425x single-cell switch-mode charger, the fuel gauge manages an embedded battery (non-removable) or a removable battery pack.
The fuel gauge uses the patented Impedance Track algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), runtime to empty (minimum), battery voltage (mV), temperature (°C), and SoH (%).
Applications include Smartphones, feature phones, tablets, digital still and video cameras, handheld terminals, MP3 or multimedia players.
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- Battery fuel gauge and charger controller for 1-series Li-Ion applications up to 14,500 mAh capacity
- Resides on system main board
- Battery fuel gauge based on patented Impedance Track™ technology
- Models the battery discharge curve for accurate remaining capacity predictions
- Automatically adjusts for battery aging, battery self-discharge, and temperature and rate inefficiencies
- Low-value sense resistor (5 to 20 mΩ)
- Battery charger controller with customizable charge profiles
- Configurable charge voltage and current based on temperature
- Optional State of Health (SoH) and multi-level based charge profiles
- Stand-alone battery charger controller for bq2425x single-cell switch-mode battery charger
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- Host-free autonomous battery management system
- Reduced software overhead allows for easy portability across platforms and shorter OEM design cycles
- Higher safety and security
- Runtime improvements
- Longer battery runtime leveraging Impedance Track™ technology
- Tighter accuracy controls for charger termination
- Improved recharge thresholds
- Intelligent charging – customized and adaptive charging profiles
- Charger control based on SoH
- Temperature Level Charging (TLC)
- 400 kHz I²C interface for connection to system microcontroller port
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