參數(shù)資料
型號： TPS65950ZXNT
廠商： TEXAS INSTRUMENTS INC
元件分類： 消費家電
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)： 122/167頁
文件大?。?/td> 2566K
代理商： TPS65950ZXNT
4.3.2
Battery Monitoring and Threshold Detection
4.3.2.1 Power On/Power Off and Backup Conditions
4.4
Power Consumption
TPS65950
Integrated Power Management/Audio Codec
SWCS032 – OCTOBER 2008
www.ti.com
Table 4-19 lists the threshold levels of the battery.
Table 4-19. Battery Threshold Levels
Parameter
Test Conditions
Min(1)
Typ(2) Max(3)
Unit
Main battery charged threshold
Measured on VBAT terminal
3.1
3.2
3.3
V
VMBCH
Main battery low threshold VMBLO
VBACKUP = 3.2 V, measured on VBAT terminal (monitored
2.55
2.7
2.85
V
on terminal ONNOFF)
Main battery high threshold VMBHI
Measured on terminal VBAT, VBACKUP = 0 V
2.5
2.65
2.95
V
Measured on terminal VBAT, VBACKUP = 3.2 V
2.5
2.85
2.95
Batteries not present threshold VBNPR Measured on terminal VBACKUP with VBAT < 2.1 V
1.6
1.8
2.0
V
Measured on terminal VBAT with VBACKUP = 0 V
1.95
2.1
2.25
(monitored on terminal VRRTC)
(1)
Min = Minimum value
(2)
Typ = Typical value
(3)
Max = Maximum value
Table 4-20 describes the power consumption, depending on the use cases.
NOTE
Typical power consumption is obtained in the nominal operating conditions and with the
TPS65950 in stand-alone mode.
Table 4-20. Power Consumption
Mode
Description
Typical Consumption
Only the RTC date is maintained with a couple of registers in the
Backup
backup domain. No main source is connected. The consumption is on
VBAT not present
2.25 * 3.2 = 7.2
W
the backup battery.
The phone is apparently off for the user, a main battery is present and
well-charged. The RTC registers (registers in the backup domain) are
Wait-On
VBAT = 3.8 V
64 * 3.8 = 243.2
W
maintained. The wake-up capabilities (like the PWRON button) are
available.
The subsystem is powered by the main battery, all supplies are
Active No Load
enabled with full current capability, internal reset is released, and the
VBAT = 3.8 V
3291 * 3.8 = 12505
W
associated processor is running.
The main battery powers the subsystem, selected supplies are
Sleep No Load
enabled but in low-consumption mode, and the associated processor is
VBAT = 3.8 V
496 * 3.8 = 1884.4
W
in low-power mode.
Table 4-21 lists the regulator states for each mode.
Table 4-21. Regulator States Depending on Use Cases
Mode
Regulator
Backup
Wait-On
Sleep No Load
Active No Load
VAUX1
OFF
VAUX2
OFF
SLEEP
ON
VAUX3
OFF
VAUX4
OFF
SLEEP
ON
VMMC1
OFF
VMMC2
OFF
SLEEP
ON
Power Module
58
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