SLUAA94 December   2020 BQ24190 , BQ24195 , BQ24195L , BQ24295 , BQ24297 , BQ25600D , BQ25601D , BQ25606 , BQ25611D , BQ25616 , BQ25890 , BQ25890H , BQ25895 , BQ25898D

 

  1.   Trademarks
  2. 1 USB Battery Charging Specification 1.2 (BC1.2)
  3. 2 HVDCP, USB Type-C, and USB PD
  4. 3 Input Current Limit Detection Capability Comparison
  5. 4 BQ24190, BQ24195, and BQ24195L
  6. 5 BQ24295
  7. 6 BQ24297
  8. 7 BQ25890 and BQ25895
  9. 8 BQ25890H and BQ25898D
  10. 9 BQ25601D, BQ25600D, and BQ25611D
  11. 10BQ25606 and BQ25616
  12. 11Summary
  13. 12References

2 HVDCP, USB Type-C, and USB PD

To achieve fast charging, high voltage (9 V/12 V) adapter with USB compatibility (5 V) is required. TI refers such adapters as HVDCP (High Voltage Dedicated Charging Port) in general. Several companies have proprietary handshake to achieve this goal. It also includes TI-defined proprietary handshake MaxCharge™.

When DCP is detected, the charger can initiate adjustable high-voltage adapter handshake including MaxCharge and so on. The handshake connects combinations of voltage source(s) and/or current sink on D+/D- to signal input source to raise output voltage from 5 V to 9 V / 12 V with up to 1.5 A current capability.

Table 2-1 shows other popular USB D+/D- input current limit detection types.

Table 2-1 Other Popular USB D+/D- Input Current Limit Detection Types
Port Definition Examples Output Current
Non-Standard Adapters Certain market adapters 5 V at 1 A / 2.1 A / 2.4 A
HVDCP (High Voltage Dedicated Charging Port) MaxCharge™ adapter 5 V / 9 V / 12 V at 1.5 A
USB Type-C at 1.5 A - 5 V / 1.5 A
USB Type-C at 3 A - 5 V / 3 A
USB PD (Power Delivery) - Up to 20 V / Up to 5 A