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參數(shù)資料
| 型號(hào)： | TPS65800RTQTG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 8-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC56 |
| 封裝： | 8 X 8 MM, GREEN, PLASTIC, QFN-56 |
| 文件頁數(shù)： | 42/98頁 |
| 文件大?。?/td> | 2077K |
| 代理商： | TPS65800RTQTG4 |
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Boot-Up Algorithm
No Battery Detection Circuit
BAT
OUT
V
-V
(OUT)
(NOBATID)
+
_
ANLG1
Battery
I C
2
TPS65800
PACKID
Resistor
Using the Input Power to Run the System and Charge the Battery Pack
BATTERY CHARGE MANAGEMENT FUNCTION
Operating Modes
SLVS606C – SEPTEMBER 2005 – REVISED FEBRUARY 2007
During the initial TPS65800 power-up the contents of the ISET2, CE and SUSPEND bits on the control register
are ignored for a time period tBOOT. During that time the charger is enabled, and the selected input current limit is
set internally to 100 mA max. At the end of tBOOT period the control register settings are implemented.
The ANLG1 pin may be used to detect the connection of an external resistor that is embedded in a battery pack
and is used as a pack ID function. The ANLG1 pin has an internal current source connected between OUT and
ANLG1, which is enabled automatically when the TPS65800 is not in SLEEP mode. The current levels for
ANLG1 pin can be programmed via I2C register ADC_WAIT, bits BATID_n, as shown below:
Figure 33. Battery Removal Detection, ANLG1 Pin
An internal comparator with a fixed deglitch time, t DGL(NOBAT) monitors the ANLG1 pin voltage, if V(ANLG1) >
V(OUT) - VNOBATID a battery removed condition is detected and an internal discharge switch is activated,
connecting an internal resistor from BAT pin to AGND1. Note that ANLG1 can also be used as an analog input
for the ADC converter, in this case the voltage at pin ANLG1 must never exceed the V(OUT) - VNOBATID
threshold to avoid undesired battery discharge.
The external supply connected to AC or USB pins must be capable of supplying the system power and the
charger current. If the external supply power is not sufficient to run the system and charge the battery pack the
TPS65800 executes a two-stage algorithm that prevents a low voltage condition at the system power bus:
1. The charge current is reduced, until the total (charger + system current) is at a level that can be supplied
by the external input supply. This function is implemented by a dedicated charger control loop (see DPPM
section in charger functional description for additional details).
2. The battery switch is turned ON if the charge current is reduced to zero and the input current is not
enough to run the system. In this mode of operation both the battery and the external input power supply
the system power ( supplement operation mode).
The supplement operation mode is automatically set by the TPS65800 when the input power is switched to the
OUT pin, and the OUT pin voltage falls below the battery voltage.
The TPS65800 supports charging of single-cell Li-Ion or Li-Pol battery packs. The charge process is executed in
three phases: precharge (or preconditioning), constant current and constant voltage.
47
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS65810EVM | 功能描述:電源管理IC開發(fā)工具 TPS65810 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| TPS65810RTQR | 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 |
| TPS65810RTQRG4 | 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 |
| TPS65810RTQT | 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 |
| 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 |
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