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http://www.ti.com/general/docs/suppproductinfo.tsp?distId=26&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Fbq25960h”>View Datasheet

Texas Instruments bq25960H Parallel Battery Charger

Texas Instruments bq25960H Parallel Battery Charger is a 98.1% peak efficiency, 8A battery charging solution using switch capacitor architecture for 1-cell Li-ion battery. The switched cap architecture allows the cable current to be half the charging current, reducing cable power loss and limiting temperature rise. The dual-phase architecture reduces the input and output cap requirements and increases charging efficiency. When used with a main charger such as bq2589x or bq2561x, the system enables a full charging cycle from trickle charge to termination with low power loss at Constant Current (CC) and Constant Voltage (CV) Mode.

The Texas Instruments bq25960H supports 5A Bypass Mode charge (previously called battery switch charge) through internal MOSFETs. The Rdson in the Bypass Mode charging path is 21mΩ for high-current operation. The integrated Bypass Mode allows backward compatibility of a 5V fast charging adapter to charge the 1-cell battery. The device supports dual input configuration through integrated driver and mux control for external N-FETs. It also allows single input with a single N-FET or no external N-FET.

Features

  • 98.1% peak efficiency switched cap parallel charger supporting 8A fast charge
  • Patent pending dual phase switched cap architecture optimized for highest efficiency
    • Input voltage is 2x battery voltage
    • The output current is 2x the input current
    • Reduces power loss across input cable
  • Integrated 5A Bypass Mode fast charge
    • 21mΩ Rdson charging path resistance to support 5A input and 5A output charging current
  • Dual-input power mux controller for source selection during fast charging and USB On-The-Go (OTG)/reverse TX Mode
  • Provide gate drive signal for external OVP GaN FETs and OVP N-FETs
  • Support minimum 1.2V I2C pullup
  • Support a wide range of input voltage
    • Up to 12.75V operational input voltage
    • Maximum 40V input voltage with optional external ACFET and 20V without external ACFET
  • Parallel charging with synchronized dual bq25960H operations for up to 13A charging current
  • Integrated programmable protection features for safe operation
    • Input overvoltage protection (BUSOVP) and battery overvoltage protection (BATOVP)
    • Input overcurrent protection (BUSOCP) and battery overcurrent protection (BATOCP)
    • Output overvoltage protection (VOUTOVP)
    • Input undercurrent protection (BUSUCP) and input reverse-current protection (BUSRCP) to detect adapter unplugging and prevent boost-back
    • Battery and connector temperature monitoring (TSBAT_FLT and TSBUS_FLT)
    • Junction overtemperature protection (TDIE_FLT)
  • Programmable settings for system optimization
    • Interrupts and interrupt masks
    • ADC readings and configuration
    • Alarm functions for host control
  • Integrated 16-bit ADC for voltage, current, and temperature monitoring

Applications

  • Smartphone
  • Tablet

Simplified Schematic

Schematic - Texas Instruments bq25960H Parallel Battery Charger

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Texas Instruments bq25960H Parallel Battery Charger