參數(shù)資料
型號： TPS65014RGZ
廠商： TEXAS INSTRUMENTS INC
元件分類： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC48
封裝： 7 X 7 MM, GREEN, PLASTIC, VQFN-48
文件頁數(shù)： 13/57頁
文件大?。?/td> 1289K
代理商： TPS65014RGZ
www.ti.com
+
Pack+
Pack–
TEMP
Battery Pack
V(HTF)
V(LTF)
LTF
HTF
TS
I(TS)
bqTINY II
NTC
+
Pack+
Pack–
TEMP
Battery Pack
LTF
HTF
TS
bqTINY II
RT1
RT2
NTC
V(HTF)
V(LTF)
I(TS)
Battery Preconditioning
Battery Charge Current
TPS65014
SLVS551 – DECEMBER 2004
DETAILED DESCRIPTION (continued)
Figure 28. TS Pin Configuration
Figure 29. TS Pin Threshold
On power up, if the battery voltage is below the V(LOWV) threshold, the TPS65014 applies a precharge current,
I(PRECHG), to the battery. This feature revives deeply discharged cells. The charge current during this phase is one
tenth of the value in current regulation phase which is set with IO(out) = KSET × V(SET)/R(SET). The load current in
preconditioning phase must be lower than I(PRECHG) and must allow the battery voltage to rise above V(LOWV)
within t(Prechg). VBAT_A is the sense pin to the voltage comparator for the battery voltage. This allows a power-on
sense measurement if the VBAT_A and VBAT_B pins are connected together at the battery.
The TPS65014 activates a safety timer, t(PRECHG), during the conditioning phase. If V(LOWV) threshold is not
reached within the timer period, the TPS65014 turns off the charger and indicates the fault condition in the
CHGSTATUS register. In the case of a fault condition, the TPS65014 reduces the current to I(DETECT). I(DETECT)is
used to detect a battery replacement condition. Fault condition is cleared by POR or battery replacement or via
the serial interface.
TPS65014 offers on-chip current regulation. When charging from an ac adapter, a resistor connected between
the ISET1 and AGND pins determines the charge rate. A maximum of 1-A charger current from the ac adapter is
allowed. When charging from a USB port either a 100-mA or 500-mA charge rate can be selected via the serial
interface; default is 100 mA maximum. Two bits are available in the CHGCONFIG register in the serial interface
to reduce the charge current in 25% steps. These only influence charging from the ac input and may be of use if
charging is often suspended due to excessive junction temperature in the TPS65014 (e.g., at high ac input
voltages) and low battery voltages.
20
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS65014RGZR 功能描述:電池管理 Li-Ion Powered Systems 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
TPS65014RGZRG4 功能描述:電池管理 Li-Ion Powered Systems 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
TPS65014RGZT 功能描述:電池管理 Li-Ion Powered Systems 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
TPS65014RGZT 制造商:Texas Instruments 功能描述:POWER M 2.5~6V FOR LI ION P 48QFN 制造商:Texas Instruments 功能描述:POWER M, 2.5~6V, FOR LI ION P, 48QFN
TPS65014RGZTG4 功能描述:電池管理 Li-Ion Powered Systems 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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