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參數(shù)資料
| 型號： | TPS62290DRV |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Half Bridge Gate Driver; Package: 8-SO-8; Container: Tape & Reel |
| 中文描述： | 1降壓轉(zhuǎn)換器2步驟× 2 SON封裝 |
| 文件頁數(shù)： | 13/23頁 |
| 文件大?。?/td> | 615K |
| 代理商： | TPS62290DRV |
www.ti.com
APPLICATION INFORMATION
GND
EN
FB
SW
MODE
V
2.7 V to 6 V
IN
C
10 F
IN
m
V
IN
TPS62290DRV
L
2.2 H
1
m
R
360 k
1
W
R
180 k
2
W
C
22 pF
1
C
10 F
OUT
m
V
1.8 V,
1000 mA
OUT
V
IN
GND
EN
FB
SW
MODE
V
3.7 V to 6 V
IN
C
10 F
IN
m
TPS62290DRV
L
2.2 H
1
R
182 k
2
W
R
820 k
1
W
C
22 pF
1
C
10 F
OUT
m
V
3.3 V,
1000 mA
OUT
OUTPUT VOLTAGE SETTING
The output voltage can be calculated to:
V
OUT
V
REF
1
R
1
R
2
with an internal reference voltage V
REF
typical 0.6V.
OUTPUT FILTER DESIGN (INDUCTOR AND OUTPUT CAPACITOR)
The TPS62260 is designed to operate with inductors in the range of 1.5
μ
H to 4.7
μ
H and with output capacitors
in the range of 4.7
μ
F to 22
μ
F. The part is optimized for operation with a 2.2
μ
H inductor and 10
μ
F output
capacitor. Larger or smaller inductor values can be used to optimize the performance of the device for specific
operation conditions. For stable operation, the L and C values of the output filter may not fall below 1
μ
H effective
inductance and 3.5
μ
F effective capacitance.
Inductor Selection
TPS62290
SLVS764–JUNE 2007
Figure 17. TPS62290DRV Adjustable 1.8 V
Figure 18. TPS62290DRV Adjustable 3.3 V
To minimize the current through the feedback divider network, R
2
should be 180 k
or 360 k
. The sum of R
1
and R
2
should not exceed ~1M
, to keep the network robust against noise. An external feed forward capacitor
C
1
is required for optimum load transient response. The value of C
1
should be in the range between 22pF and
33pF.
Route the FB line away from noise sources, such as the inductor or the SW line.
The inductor value has a direct effect on the ripple current. The selected inductor has to be rated for its dc
resistance and saturation current. The inductor ripple current (
I
L
) decreases with higher inductance and
increases with higher V
I
or V
O
.
The inductor selection has also impact on the output voltage ripple in PFM mode. Higher inductor values will
lead to lower output voltage ripple and higher PFM frequency, lower inductor values will lead to a higher output
voltage ripple but lower PFM frequency.
13
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS62290DRVR | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 2.25MHz 1A Step- Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS62290DRVRG4 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 2.25MHz 1A Step- Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS62290DRVT | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 2.25MHz 1A Step- Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS62290DRVT | 制造商:Texas Instruments 功能描述:DC/DC Converter IC |
| TPS62290DRVTG4 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 2.25MHz 1A Step- Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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