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

5 BQ24295

Besides USB500 and DCP, the device can also detect three types of non-standard adapters as shown in Table 5-1.

Table 5-1 BQ24295 USB D+/D- Detection
D+/D- Detection Input Current Limit
0.5 sec timer expired in DCD (D+/D- floating) Proceed to non-standard adapter detection
USB host 500 mA
Charging port 3 A

When DCD 0.5 sec timer expires, the non-standard adapter detection is used to distinguish three different divider bias conditions on D+/D- pins. When non-standard adapter is detected, the input current limit (REG0[2:0]) is set based on Table 5-2 and REG08[7:6] is set to 10 (Adapter port). If non-standard adapter is not detected, REG08[7:6] is set to 00 (Unknown) and the input current limit is set in REG0[2:0] to 500mA by default.

Table 5-2 BQ24295 Non-Standard Adapter Detection
Non-Standard Adapter D+ Threshold D- Threshold Input Current Limit
Divider 1 Vadpt1_lo < VD+ < Vadpt1_hi For VBUS = 5 V, typical range 2.4 V < VD+ < 3.1 V VD- < Vadpt1_lo or VD- > Vadpt1_hi For VBUS = 5 V, typical range VD- < 2.4 V or VD- > 3.1 V 2.0 A
Divider 2 Vadpt2_lo < VD+ < Vadpt2_hi For VBUS = 5 V, typical range 0.85 V < VD+ < 1.5 V NA 2.0 A
Divider 3 VD+< Vadpt3_lo or VD+> Vadpt3_hi For VBUS = 5 V, typical range VD+ < 2.4 V or VD+ > 3.1 V Vadpt3_lo < VD- < Vadpt3_hi For VBUS = 5 V, typical range 2.4 V < VD- < 3.1 V 1 A