Texas Instruments bq25720 SMBus Buck-Boost battery charge controller is a synchronous NVDC Buck-Boost battery charge controller,

For charging 1-4 batteries from a wide range of input sources. These power supplies include USB adapters, high-voltage USB-C power supplies (PD), and standard adapters.

The NVDC configuration allows the system to regulate based on the battery voltage, but not drop below the system minimum voltage. Even if the battery is fully discharged or removed,

The system can also continue to work. When the load power exceeds the input power rating, the battery goes into replenishment mode, preventing the system from crashing.

During power-up, the charger sets the converter to a buck, boost, or buck configuration depending on the input source and battery conditions. No host control required,

The charger switches seamlessly between buck, boost and buck operating modes. In the absence of an input source, the bq25720 supports USB on-go (OTG) functionality,

Generates an adjustable 3V to 24V V(BUS) output from 1-4 cells with 8mV resolution. The OTG output voltage slew rate can be configured to comply with the USB-PD 3.0 PPS specification.

The bq25720 implements the latest Intel Vmin Active Protection (VAP) feature when there is only one battery powered system and no external load is connected to the USB OTG port,

The V(BUS) voltage where the device charges from the battery to store some energy in the input decoupling capacitors. During the peak period of system peak power, the energy stored in the input capacitor supplements the system,

Prevent the system voltage from falling below the minimum system voltage and cause the system to crash.

The Texas Instruments bq25720 monitors adapter current, battery current, and system power. The flexibly programmable PROCHOT output goes directly to the CPU for throttling when needed.

The latest version of the USB-C PD specification includes Fast Role Swap (FRS), which ensures that power role swapping occurs in a timely manner so that devices connected to the dock do not experience a brief loss of power or failure.

The device integrates a PD-compliant FRS.

TI's patented switching frequency dithering mode significantly reduces EMI noise over the entire conducted EMI frequency range (150kHz to 30MHz). Multiple dither scale options are available,

Provides flexibility for different applications to simplify the design of EMI noise filters. The charger operates in TI's patented pass-through mode (PTM) to improve efficiency over the full load range. In PTM,

Input power is delivered directly to the system through the charger. The switching losses of the mosfet and the core losses of the inductor can save high-efficiency operation. The bq25720 is available in a 32-pin 4mm × 4mm WQFN package

.