SDAA050 August   2025 BQ25180 , BQ25186 , BQ25188 , BQ25622E , BQ25638 , BQ25798 , BQ25890 , TPS2121

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Possible Architectures
    1. 2.1 Power Mux
      1. 2.1.1 Other Power Mux Considerations
      2. 2.1.2 Power Mux Over Voltage and Priority Settings
      3. 2.1.3 Power Mux Testing
    2. 2.2 Multicell Charger IC
    3. 2.3 Dual Chargers
    4. 2.4 eFuses (USB OTG)
  6. 3Summary
  7. 4References

Abstract

Many applications require the use of two independent power sources as the input for a Texas Instruments single cell battery charger IC. Some of TI's multicell battery charger ICs have dual input features and can be used in a single cell application however these are generally larger and more expensive. This application note presents alternative designs that in most applications are more cost effective and feature a smaller footprint.