SLVT238 February   2026

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Required Equipment
    3. 1.3 Dimensions
  8. 2Testing and Results
    1. 2.1 System Efficiency Graphs
    2. 2.2 System Efficiency Data
    3. 2.3 Charge Efficiency Graphs
    4. 2.4 Charging Efficiency Data
    5. 2.5 Thermal Images
      1. 2.5.1 140W Input, 16V System Voltage
      2. 2.5.2 180W Input, 9V System Voltage
      3. 2.5.3 210W Input, 12.3V System Voltage
      4. 2.5.4 220W Input, 14V System Voltage
      5. 2.5.5 240W Input, 17.6V System Voltage
  9. 3Waveforms
    1. 3.1 Typical Charging Waveforms
    2. 3.2 Start-up and Shutdown
    3. 3.3 Charge Enable and Disable
    4. 3.4 System Transients
    5. 3.5 Typical OTG Waveforms
    6. 3.6 OTG Transients
  10.   Trademarks

Description

This reference design features the BQ25770/BQ25773, 2-to-5 cell NVDC quasi-dual-phase buck-boost battery charge controller in a high-density design for notebook PC and portable applications. The dual-phase topology utilizes two small inductors and two half bridge dual-FETs, thus minimizing hot spots and spreading heat across the board. The topology also supports a 2-to-5 cell battery and accepts a wide input range including USB adapter, high voltage USB-C® Power Delivery (PD) sources, and traditional adapters.