SLUAAG7 October   2021 BQ25720

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Type-C Power Delivery (PD) Connection
    2. 1.2 Type-C Battery Charging Topologies
    3. 1.3 BQ25720 Overview
  3. 2Design Considerations for Notebook Applications
    1. 2.1 Vmin Active Protection (VAP)
    2. 2.2 Fast Role Swap (FRS)
    3. 2.3 Processor Hot Indication
    4. 2.4 Two-Level Battery Discharge Current Limit
    5. 2.5 Pass Through Mode (PTM) Operation
    6. 2.6 Seamless Mode Transition
    7. 2.7 Current and Power Monitor
    8. 2.8 Input Source Dynamic Power Management
    9. 2.9 Power Up USB Port From Battery (USB OTG)
  4. 3Test Results
  5. 4Summary
  6. 5References

2.9 Power Up USB Port From Battery (USB OTG)

The device supports USB OTG operation to deliver power from the battery to accessories through USB port. The OTG voltage can change from 3.0 V to 24 V at the USB port with 8 mV resolution. Also, OTG current could change from 0A to 6.35A with 50 mA resolution under 10 mΩ input current sensing. Both OTG voltage and OTG current are qualified for Type-C programmed power supply (PPS) specification in terms of resolution and accuracy.