BQ29718DSET Integrated Circuits (ICs)

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Battery management systems are used to monitor and control the usage of batteries to maximize the life of batteries and avoid damage to the cells. The BQ29718DSET is an integrated system-on-a-chip (SoC) battery management solution optimised for space-constrained Li-ion and Li-Polymer battery applications. It provides a single chip solution with integrated power delivery and management as well as direct interface with the battery cells.

Application Field

The BQ29718DSET is designed for use in portable applications such as notebooks, cellular phones, handhelds, camcorders, and two-way radios. It is also suitable for automotive applications including electric vehicles, navigation systems, and entertainment systems. The chip is designed with the industry-leading process technology with an integrated buck-boost converter and Intelligent Power Selector (IPS) to maximize the power efficiency.

Working Principle

The BQ29718DSET is powered by an external voltage source, typically between 2.5V and 6V. It contains a buck-boost converter that is responsible for the voltage conversion. The processor then charges or discharges the battery cells, ensuring that the voltage of each cell remains within a safe range. Additionally, the processor monitors the temperature in each cell using a thermistor to ensure that the cells are not too hot or too cold.

The BQ29718DSET also features built-in protected capacity measurement and state of charge (SOC) measurement. This ensures that the capacity of the cells is accurately measured and that the battery will not be overcharged or overdischarged. Finally, the integrated Intelligent Power Selector (IPS) enables the processor to route the power from the external voltage source to the cells depending on their needs.

This combination of integrated features makes the BQ29718DSET an ideal solution for battery management in portable and automotive applications. The chip is small in size, low in power consumption, and provides accurate and reliable battery monitoring and management.

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