Webpage with pictures

As a preliminary stage for the Smartastic power management, I developed a breakout board with the following features:

  • Fast charging up to 3A charging current (depending on the battery)
  • Inductive charging (Qi WPC v1.2)
  • USB-C connection
  • 5V boost converter up to 2A output current
  • 3.3V LDO up to 1A output current
  • Battery monitoring: capacity, charge time, discharge time, charge cycles
  • Readout and configuration via I2C
  • Status LEDs

Components used

  • Charge control and 5V boost: Texas Instruments BQ25896
  • 3.3V LDO: Texas Instruments TLV757
  • Battery management: Maxim MAX17055
  • Qi controller: Texas Instruments BQ51013B