TI BQ25713RSNR

This device is a synchronous NVDC buck/boost battery charging controller that provides an efficient solution with fewer components for space-constrained 1-to-4 cell battery charging applications. Through the NVDC configuration, the system voltage can be stabilized at the battery voltage level, but it cannot be reduced below the system's minimum voltage. Even when the battery is fully discharged or removed, the system will continue to operate. When the load power exceeds the input source's rated value, the battery will enter the power supplement mode and prevent the system from crashing. The BQ25713/BQ25713B can charge the battery through various input sources such as USB adapters, high-voltage USB PD sources, and traditional adapters. During power-up, the charger sets the converter to the buck, boost, or buck/boost configuration based on the input source and battery conditions. The charger automatically switches between the buck, boost, and buck/boost configurations without host control. In the absence of an input source, the BQ25713/BQ25713B can support the USB On-the-Go (OTG) function for 1-to-4 cell batteries, thereby generating an adjustable voltage of 3V to 20.8V with an 8mV resolution on VBUS. The OTG output voltage slew rate is configurable, which complies with the USB PD 3.0 PPS specification. When the system is powered solely by the battery and no external load is connected to the USB OTG port, the BQ25713/BQ25713B supports the Vmin Active Protection (VAP) feature. With this feature, the device charges VBUS from the battery, thereby storing some energy in the input decoupling capacitor. During the system's peak power spikes, a large amount of current flows out of the battery, resulting in a large voltage drop across the impedance from the battery to the system. The energy stored in the input capacitor will supplement the system's power, thereby preventing the system voltage from dropping below the minimum system voltage and causing the system to crash. This Vmin Active Protection (VAP) feature is designed to absorb the system's power peaks during high-power SOC requirements. Intel strongly recommends equipping platforms with 1-to-2 cell batteries with this feature. The BQ25713/BQ25713B monitors the adapter current, battery current, and system power. The flexibly programmable PROCHOT output goes directly to the CPU to reduce its frequency as needed.

• Pin-to-pin and software compatible with BQ25703A
• Charges 1 to 4 cell batteries from various input sources
• 3.5V to 24V input operating voltage
• Supports USB 2.0, USB 3.0, USB 3.1 (Type-C), and USB Power Delivery (USB-PD) input current settings
• Seamless transition between buck, buck-boost, and boost operations
• Input current and voltage regulation (IDPM and VDPM) for power source overload protection
• Power/current monitor for CPU throttling
• Comprehensive PROCHOT settings compliant with IMVP8/IMVP9 requirements
• Input and battery current monitors
• System power monitor compliant with IMVP8/IMVP9 requirements
• Narrow Voltage DC (NVDC) power path management
• Instant system startup even without battery or with deeply discharged battery
• Battery supplements system power when adapter is fully loaded
• Battery MOSFET enables ideal diode operation in supplemental mode
• USB port power via battery (USB OTG)
• 3V to 20.8V VOTG with 8mV resolution
• Output current limit up to 6.4A with 50mA resolution
• Pass-Through Mode (PTM) for improved system efficiency
• Vmin Active Protection (VAP) mode supplements battery from input capacitors during system peak power spikes when system is powered solely by battery
• Input Current Optimizer (ICO) for maximum input power extraction
• 800kHz or 1.2MHz programmable switching frequency for 2.2μH to 1.0μH inductors
• Flexible system configuration via host control interface
• I2C (BQ25713/BQ25713B) port for optimized system performance and status reporting
• Hardware pins for input current limit setting without EC control
• Integrated ADC for voltage, current, and power monitoring
• High-accuracy regulation and monitoring
• ±0.5% charge voltage regulation
• ±2% input/charge current regulation
• ±2% input/charge current monitoring
• ±4% power monitor
• Thermal protection
• Input, system, and battery overvoltage protection
• Input, MOSFET, and inductor overcurrent protection
• Low battery quiescent current

• Drones
• Bluetooth speakers
• IP cameras
• Detachable computers
• Tablets
• Power banks
• Industrial and medical equipment
• Portable devices with rechargeable batteries