參數(shù)資料
型號： TPS65810RTQT
廠商： TEXAS INSTRUMENTS INC
元件分類： 電源管理
英文描述： 9-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC56
封裝： 8 X 8 MM, GREEN, PLASTIC, QFN-56
文件頁數(shù)： 43/99頁
文件大?。?/td> 2128K
代理商： TPS65810RTQT
www.ti.com
Battery
Voltage,
V(BAT )
Charge
Complete
Status,
Charger
Off
Pre-
conditioning
Phase
Current
Regulation
Phase
VoltageRegulationand
ChargeTermination
Phase
PRE-CHARGE
CURRENT AND
TERMINATION
THRESHOLD
BatteryCurrent,
I(BAT)
VO(BATREG)
V(LOWV)
T(PRECHG)
T(CHG)
FAST-CHARGE
CURRENT
IO(BAT)
IO(PRECHG) , I(TERM)
DONE
Thermal
Regulation
Phase
ICJunction
Temperature, Tj
T(THREG)
Battery Preconditioning
I
O(PRECHG) +
V
PRECHG
K
SET
R
SET
(2)
CONSTANT CURRENT CHARGING
I
O(BAT) +
V
SET
K
SET
R
SET
(3)
SLVS658B – MARCH 2006 – REVISED FEBRUARY 2007
A modified charge cycle, with the thermal loop active, is shown here:
Figure 35. Typical Charge Cycle, Thermal Loop Active
The TPS65810 applies a pre-charge current Io(PRECHG) to the battery if the battery voltage is below the V(LOWV)
threshold, pre-conditioning deeply discharged cells. The charge current loop regulates the ISET1 pin voltage to
an internal reference value, VPRECHG. The resistor connected between the ISET1 and AGND pins, RSET,
determines the precharge rate.
The pre-charge rate programmed by RSET is always applied to a deeply discharged battery pack, independently
of the input power selection (AC or USB). The pre-charge current can be calculated as follows:
where:
KSET is the charge current scaling factor and VPRECHG is the pre-charge set voltage.
The constant charge current mode (fast charge) is set when the battery voltage is higher than the pre-charge
voltage threshold. The charge current loop regulates the ISET1 pin voltage to an internal reference value, VSET.
The fast charge current regulation point is defined by the external resistor connected to the ISET1 pin, RSET, as
shown in the following:
where:
VSET (2.5 V typ) is the voltage at ISET1 pin during charge current regulation and KSET = Charge Current
Scaling Factor.
The reference voltage VSET can be reduced via I
2C register CHG_CONFIG bits ISET1_1 and ISET1_0. V
SET can
be selected as a percentage (75%, 50% or 25%) of the original 2.5 V typ, non-attenuated VSET value, effectively
scaling down the charge current.
48
Copyright 2006–2007, Texas Instruments Incorporated
Product Folder Link(s): TPS65810 TPS65811
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相關代理商/技術(shù)參數(shù)
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TPS65810RTQTG4 功能描述:電池管理 Int Sgl-Cell Lit-Ion Batt & Pwr Mgmt IC RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
TPS65811RTQR 功能描述:電池管理 Integr S-C Li-Ion RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
TPS65811RTQRG4 功能描述:電池管理 Integr S-C Li-Ion RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
TPS65811RTQT 功能描述:電池管理 Integr S-C Li-Ion RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
TPS65811RTQTG4 功能描述:電池管理 Integr S-C Li-Ion RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
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