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http://www.ti.com/general/docs/suppproductinfo.tsp?distId=26&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Fbq25980″>View Datasheet
Texas Instruments bq25980 8A Battery Charging Solution is a 98.6% peak efficiency battery charging solution using dual-phase switched cap architecture for a 2-cell Li-ion battery. The switched cap architecture allows the cable current to be half the charging current, reducing the cable power loss and limiting temperature rise. The dual-phase architecture increases charging efficiency and reduces the input and output cap requirements. When used with the main charger such as bq25790, the system enables fast charging at a very low power loss from pre-charge through constant current (CC), constant voltage (CV), and termination.
The Texas Instruments bq25980 also supports a 7A bypass mode charge (previously called battery switch charge) through internal MOSFETs. The Rdson in bypass mode charging path is less than 13mΩ for high current operation. The integrated bypass mode allows the backward compatibility of a 10V fast charging adapter to charge a 2-cell battery. The device supports dual input configuration through integrated mux control and driver for external N-FETs. It also allows single input with no external N-FET or single N-FET.
The device integrates all the necessary protection features to support safe charging, including input over-voltage and over-current protection, output over-voltage, and over-current protection. It also supports input under-current and reverse-current protection, input short circuit protection, temperature sensing for the battery and cable, and junction over-temperature protection in both switched cap and bypass mode.
The device includes a 16-bit analog-to-digital converter (ADC) to provide VAC voltage, bus voltage, bus current, output voltage, battery voltage, battery current, input connector temperature, battery temperature, junction temperature, and other calculated measurements needed to manage the charging of the battery from the adapter, or wireless input, or power bank.
