參數(shù)資料
型號(hào)： L6924D013TR
廠商： STMICROELECTRONICS
元件分類： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC16
封裝： 3 X 3 MM, VFQFPN-16
文件頁(yè)數(shù)： 6/38頁(yè)
文件大?。?/td> 1454K
代理商： L6924D013TR
Operation description
L6924D
14/38
Doc ID 11908 Rev 9
6.2
Quasi-pulse mode
The quasi-pulse mode can be used when the system can rely on the current limit of the
upstream adapter to charge the battery. In this case, ICHG must be set higher than the
current limit of the adapter. In this mode, the L6924D charges the battery with the same
three phases as in linear mode, but the power dissipation is greatly reduced as shown in
Figure 7.
Typical charge curves in quasi pulse mode
The big difference is due to the fact that ICHG is higher than the current limit of the adapter.
During the fast-charge phase, the output voltage of the adapter drops and goes down to the
battery voltage plus the voltage drop across the power MOSFET of the charger, as shown in
the following equation:
Equation 2
Where
ΔV
MOS is given by:
Equation 3
Adapter Voltage
Charge Current
Power dissipation
Battery Voltage
End
Charge
Voltage Regulation
Phase
Pre-Charge
Phase
Fast-Charge
Phase
I
LIM
Ilim x Rdson
I
PRETH
I
CHG
V
PRETH
V
OPRGTH
V
ADP
MOS
BAT
ADP
IN
V
Δ
+
=
I
R
V
LIM
ON
DS
MOS
×
=
Δ
)
(
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L6924U 功能描述:電池管理 USB Battery Charger System w/integra 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
L6924U013TR 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:USB compatible battery charger system with integrated power switch for Li-Ion/Li-Polymer
L6924UTR 功能描述:電池管理 Battery Charger USB Compatible 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
L6925 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HIGH EFFICIENCY MONOLITHIC SYNCHRONOUS STEP DOWN REGULATOR
L6925013TR 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HIGH EFFICIENCY MONOLITHIC SYNCHRONOUS STEP DOWN REGULATOR
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