The BQ25720 is a synchronous buck-boost battery charge controller to charge a 1-cell to 4-cells battery from a wide range of input sources including USB adapter, high voltage USB-C PD sources, and traditional adapter. It features an NVDC architecture that allows the system to be regulated based on battery voltage, but not drop below system minimum voltage.

It is compliant with IMVP8/IMVP9 system features for the latest lntel platform, which includes Enhanced Vmin Active Protection (VAP), comprehensive PROCHOT, two-level discharge current limit, and system power monitoring (PSYS). The BQ25720 monitors adapter current, battery current, and system power, and programmed PROCHOT output goes directly to the CPU for throttle back when needed by SMBus.

Also, it supports input current and voltage regulation (IINDPM and VINDPM) against source overload and integrated Fast Role Swap (FRS) feature following USB-PD specification.

BQ25720 is a solution that supports low quiescent current and offers the flexibility to charge notebook 2-cells battery or 4-cells battery. Combined with low impedance external operating FET and inductor, engineers can further extend the battery running time for applications requiring long periods of operation.