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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)： | 41/99頁 |
| 文件大小： | 2128K |
| 代理商： | TPS65810RTQT |
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Using the Input Power to Run the System and Charge the Battery Pack
BATTERY CHARGE MANAGEMENT FUNCTION
Operating Modes
SLVS658B – MARCH 2006 – REVISED FEBRUARY 2007
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
TPS65810 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 TPS65810 when the input power is switched to the
OUT pin, and the OUT pin voltage falls below the battery voltage.
The TPS65810 supports charging of single-cell Li-Ion or Li-Pol battery packs. The charge process is executed in
three phases: pre-charge (or pre-conditioning), constant current and constant voltage.
The charge parameters are selectable via I2C interface and using external components. The charge process
starts when an external input power is connected to the system, the charger is enabled by the I2C register
CHG_CONFIG bits CE=HI and CHGON=HI, and the battery voltage is below the recharge threshold, V(BAT) <
V(RCH). When the charge cycle starts a safety timer is activated. The safety timer timeout value is set by an
external resistor connected to the TMR pin.
When the charger is enabled two control loops modulate the battery switch drain to source impedance to limit the
BAT pin current to the programmed charge current value (charge current loop) or to regulate the BAT pin voltage
to the programmed charge voltage value (charge voltage loop). If V(BAT) < 3 V (typ) the BAT pin current is
internally set to 10% of the programmed charge current value. A typical charge profile is shown below, for an
operation condition that does not cause the IC junction temperature to exceed 125
°C (typ).
46
Copyright 2006–2007, Texas Instruments Incorporated
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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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