參數(shù)資料
型號： TPS65950ZXNT
廠商： TEXAS INSTRUMENTS INC
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PBGA209
封裝： 7 X 7 MM, 0.40 MM PITCH, PLASTIC, BGA-209
文件頁數(shù)： 30/167頁
文件大小： 2566K
代理商： TPS65950ZXNT
8.4
Charge Sequence Timing Diagram
Time
CHGV(BCI)4.20V
VBAT
VBATOV4(BCI)3.95V
VBAT>3.2V(Power)3.2V
POR(Power)2.65V
FASTPRECH(BCI2.0V
SLOWPRECH(BCI)1.2V
CHGI(BCI)600mA
ICHG
ICHGLOW(BCI)240mA
SlowPrechargeCurrent100mA
ICHGEOC(BCI)80mA
SmallPrechargeCurrent5mA
CHARGE
MODES
Time
F
AST
Precharge
SMALL
Precharge
SLOW
Precharge
Constant
Current
Maincharge
Constant
V
oltage
Maincharge
Charge
Completion
Charge
End
032-058
8.5
CEA Charger Type
TPS65950
Integrated Power Management/Audio Codec
www.ti.com
SWCS032 – OCTOBER 2008
Figure 8-4 is the charge sequence timing diagram.
Figure 8-4. Automatic Charge Sequence Timing Diagram
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(1) Max(2)
Unit
ICCINIT
Supply current of unconfigured function/hub
Hub: DP and DM not shorted, DM low
100
mA
Charger: DP and DM shorted
ICRINIT
Supply current of unconfigured charger/carkit
450
mA
Carkit: DP and DM not shorted, DM high
TDELAY
Delay for power up all blocks
1000
s
(1)
Min = Minimum value
(2)
Max = Maximum value
Battery Interface
125
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