Datasheet

Time
CHGV(BCI)4.20V
VBAT
VBATOV4(BCI)3.95V
VBAT>3.2V(Power)3.2V
POR(Power)2.65V
FASTPRECH(BCI2.0V
SLOWPRECH(BCI)1.2V
CHGI(BCI)600mA
ICHG
ICHGLOW(BCI)240mA
SlowPrechargeCurrent100mA
ICHGEOC(BCI)80mA
SmallPrechargeCurrent5mA
CHARGE
MODES
Time
Time
FAST
Precharge
SMALL
Precharge
SLOW
Precharge
Constant
Current
Maincharge
Constant
Voltage
Maincharge
Charge
Completion Charge
End
032-058
TPS65950
SWCS032E–OCTOBER 2008–REVISED JANUARY 2011 www.ti.com
8.4 Charge Sequence Timing Diagram
Figure 8-4 is the charge sequence timing diagram.
Figure 8-4. Automatic Charge Sequence Timing Diagram
8.5 CEA Charger Type
Depending on the device and according to the charger type, the DM and DP lines have different
characteristics:
• Hub: DP and DM not shorted, DM low
• Charger: DP and DM shorted
• Carkit: DP and DM not shorted, DM high
These characteristics reflect to which of these devices the phone is connected.
Table 8-4 lists the important characteristics in precharge detection.
Table 8-4. Precharge Detection Characteristics
Symbol Parameter Comments Min Max Unit
I
CCINIT
Supply current of unconfigured function/hub Hub: DP and DM not shorted, DM low 100 mA
Charger: DP and DM shorted
I
CRINIT
Supply current of unconfigured charger/carkit 100 mA
Carkit: DP and DM not shorted, DM high
T
DELAY
Delay for power up all blocks 1000 μs
T
DMOD_DELAY
Time pulling down DM line 19.5 μs
124 Battery Interface Copyright © 2008–2011, Texas Instruments Incorporated
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