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| 型號： | TPS55383PWPRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 7 A DUAL SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | PLASTIC, HTSSOP-26 |
| 文件頁數(shù)： | 25/45頁 |
| 文件大小： | 1318K |
| 代理商： | TPS55383PWPRG4 |
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DESIGN EXAMPLE 1 STEP-BY-STEP DESIGN PROCEDURE
(
)
OUT1
FD
MAX1
FD
IN min
V
5.0
0.4
D
0.540
V
9.6
0.4
+
=
+
(21)
(
)
OUT2
FD
MAX2
FD
IN min
V
3.3
0.4
D
0.370
V
9.6
0.4
+
=
+
(22)
(
)
OUT1
FD
MIN1
FD
IN m ax
V
5.0
0.4
D
0.397
V
13.2
0.4
+
=
+
(23)
(
)
OUT2
FD
MIN2
FD
IN max
V
3.3
0.4
D
0.272
V
13.2
0.4
+
=
+
(24)
(
)
(
)
Lrip max
OUT max
I
0.25
I
0.25
3.0 A
0.750 A
=
=
=
(25)
(
)
OUT1
IN m ax
m in1
Lrip1(m ax)
SW
V
1
13.2
5.0
1
L
D
0.397
7.23 H
I
f
0.75 A
600 kHz
-
=
=
m
(26)
(
)
OUT2
IN max
min 2
Lrip2(max)
SW
V
1
13.2
3.3
1
L
D
0.272
6.0 H
I
f
0.75 A
600 kHz
-
=
=
m
(27)
(
)
OUT1
IN max
RIPPLE1
min1
1
SW
V
1
13.2
5.0
1
I
D
0.397
0.661A
L
f
8.2 H
600 kHz
-
=
=
m
(28)
(
)
OUT2
IN max
RIPPLE2
min 2
2
SW
V
1
13.2
3.3
1
I
D
0.272
0.547 A
L
f
8.2 H
600 kHz
-
=
=
m
(29)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
( )
(
)
2
1
RIPPLE1
L1 rms
L1 avg
OUT1 max
12
I
3.0
0.661
A
3.0 A
=
+
+
=
+
=
(
)
(
)
(
)
(
)
(
)
(
)
(
)
( )
(
)
2
1
RIPPLE2
L2 rms
L2 avg
OUT2 max
12
I
3.0
0.547
A
3.0 A
=
+
+
=
+
=
www.ti.com ......................................................................................................................................................................................... SLUS818 – SEPTEMBER 2008
The bill of materials for this application is shown below in Table 3. The efficiency, line and load regulation
measurements from boards built using this design are shown in Figure 34 and Figure 35.
Duty Cycle Estimation
The duty cycle of the main switching FET of each channel is estimated by:
Inductor Selection
The peak-to-peak ripple is to be limited to 25% of the max output current, so that
The minimum inductor size is estimated by:
The standard inductor value of 8.2
H is selected for both Channel 1 and Channel 2. The resulting ripple
currents are estimated by:
RMS current through the inductor is approximated by:
(30)
(31)
The RMS inductor current is 3.0 for both channels.
Copyright 2008, Texas Instruments Incorporated
31
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| TPS55386EVM-363 | 功能描述:電源管理IC開發(fā)工具 TPS55386EVM-363 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| TPS55386PWP | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 3A Dual Non-Synch Buck 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 |
| TPS55386PWPG4 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 3A,Dual Non-Synch Buck 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 |
| TPS55386PWPR | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 3A Dual Non-Synch Buck 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 |
| TPS55386PWPRG4 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 3A,Dual Non-Synch Buck 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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