參數(shù)資料
型號: TPS65552ARGT
廠商: Texas Instruments, Inc.
英文描述: INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVER
中文描述: 綜合閃光燈充電器和IGBT驅(qū)動器
文件頁數(shù): 9/14頁
文件大?。?/td> 404K
代理商: TPS65552ARGT
www.ti.com
P
Programming Peak Current
The TPS65552A provides a method to program I
(PEAK)
through the input voltage of the I_PEAK terminal.
Figure 7
shows how to program I
(PEAK)
.
I_PEAK input is treated as a logic input, when its voltage is below V
(PKL)
(0.6 V) and above V
(PKH)
(2.4 V).
Between V
(PKL)
and V
(PKH)
, I_PEAK input is treated as an analog input. Using this characteristic, I
(PEAK)
can be set
by the logic signal or by an analog input.
0.80
1
1.20
1.40
1.60
1.80
2
0
0.5
1
1.5
2
2.5
3
3.5
V(I_PEAK) [V]
I
IGBT Driver Control
The IGBT driver provided by the TPS65552A is a simple buffer in the logical table.
Table 3
shows the function
(see
Figure 4
).
TPS65552A
SLVS567–JULY 2005
Typical usages of this function are:
1. Charging I
(PEAK)
depends on the battery voltage. Large I
(PEAK)
for an adequate battery, small I
(PEAK)
for a poor
battery.
2. Reducing I
(PEAK)
when zooming lens (motor works); this avoids shutdown of the battery with a large current
output.
In
Figure 1
, three optional connections to I_PEAK are shown.
1. Use the controller to treat I_PEAK as the logic input pin. This option is the easiest.
2. Use a D/A converter to force I
(PEAK)
to follow analog information, such as battery voltage.
3. Use an analog circuit to achieve the same results as the D/A converter.
Figure 7. I_PEAK vs I
(SW)
Table 3. IBGT Driver Function Table
F_ON
L
H
G_IGBT
L
H
9
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS65552ARGTR 功能描述:其他電源管理 Intgrtd Photo Flash Charger & IGBT Drv RoHS:否 制造商:Texas Instruments 輸出電壓范圍: 輸出電流:4 mA 輸入電壓范圍:3 V to 3.6 V 輸入電流: 功率耗散: 工作溫度范圍:- 40 C to + 110 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-48 封裝:Reel
TPS65552ARGTRE3 功能描述:其他電源管理 Intgrtd Photo Flash Charger & IGBT Drv RoHS:否 制造商:Texas Instruments 輸出電壓范圍: 輸出電流:4 mA 輸入電壓范圍:3 V to 3.6 V 輸入電流: 功率耗散: 工作溫度范圍:- 40 C to + 110 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-48 封裝:Reel
TPS65552ARGTT 制造商:Texas Instruments 功能描述:INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVER - Tape and Reel
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