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http://www.ti.com/general/docs/suppproductinfo.tsp?distId=26&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Fbq25968″>View Datasheet
Texas Instruments bq25968 Switched Cap Fast Charger is a 97% efficient, 6A battery charging solution using a switched cap architecture. This architecture and the integrated FETs are optimized to enable a 50% duty cycle, allowing the cable current to be half the current delivered to the battery. This feature reduces the losses over the charging cable as well as limiting the temperature rise in the application.
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 the fastest charging at the lowest power loss from precharge through CC, CV, and termination. The dual-phase architecture reduces the input cap requirements as well as reducing the output voltage ripple. When used with a standard charger such as the bq2589x, the system enables the fastest charging at the lowest power loss from precharge through CC, CV, and termination.
The Texas Instruments bq25968 integrates all the necessary protection features to ensure safe charging. These features include input over-voltage & over-current protection, output overvoltage & overcurrent protection, temperature sensing for the battery & cable, and monitoring the die temperature. The device includes a 12-bit effective analog-to-digital converter (ADC) to provide bus voltage, bus current, output voltage, battery voltage, battery current, bus temperature, bat temperature, die temperature, and other calculated measurements needed to manage the charging of the battery from a smart wall adapter or power bank.
