SLYT819 October   2021 BQ25980

 

  1. 1 Introduction
  2. 2 Delivering over 100 W power with USB PD
  3. 3 High-efficiency switched-capacitor DC/DC converters
  4. 4 Output impedance
  5. 5 Switching losses
    1. 5.1 Turnon switching loss
    2. 5.2 Turnoff switching loss
    3. 5.3 Gate driving loss
  6. 6 Dual-phase interleaved switched-capacitor converter
  7. 7 High-power-density switched-capacitor converter
  8. 8 Switched-capacitor converter application: fast charging for portable devices
  9. 9 Conclusion
  10. 10Related Websites
  11. 11Important Notice

9 Conclusion

A switched-capacitor converter has higher efficiency and power density compared to an inductor-based converter. With the USB PPS adapter and USB Type-C connector, two 98.6% peak efficiency switched-capacitor converters used in a battery charging system enable 120 W of fast charging with as little as 15 minutes of charging time, greatly improving the user experience.