參數(shù)資料
型號： PTH08000WAZ1
廠商： Texas Instruments, Inc.
元件分類： 基準電壓源/電流源
英文描述： RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
中文描述： 抗輻射高效，5安培開關(guān)穩(wěn)壓器
文件頁數(shù)： 10/20頁
文件大?。?/td> 1402K
代理商： PTH08000WAZ1
www.ti.com
Designing for Load Transients
PTH08000W
SLTS248–JUNE 2005
The transient response of the dc/dc converter has been characterized using a load transient with a di/dt of
1 A/μs. The typical voltage deviation for this load transient is given in the data-sheet specification table using the
optional value of output capacitance. As the di/dt of a transient is increased, the response of a converter's
regulation circuit ultimately depends on its output capacitor decoupling network. This is an inherent limitation with
any dc/dc converter once the speed of the transient exceeds its bandwidth capability. If the target application
specifies a higher di/dt or lower voltage deviation, the requirement can only be met with additional output
capacitor decoupling. In these cases, special attention must be paid to the type, value, and ESR of the
capacitors selected.
If the transient performance requirements exceed those specified in the data sheet, the selection of output
capacitors becomes more important. Review the minimum ESR in the characteristic data sheet for details on the
capacitance maximum.
Table 3. Recommended Input/Output Capacitors
(1)
CAPACITOR CHARACTERISTICS
QUANTITY
85°C
CAPACITOR VENDOR/
COMPONENT
SERIES
WORK-
ING
VOLTAGE
(V)
EQUIVALENT
SERIES
RESISTANCE
(ESR) (
)
VENDOR
NUMBER
MAXIMUM
RIPPLE
CURRENT
(I
RMS
) (mA)
3700
670
PHYSICAL
SIZE
(mm)
OUTPUT
BUS
(Optional)
VALUE
(μF)
INPUT
BUS
(2)
Panasonic WA (SMT)
FC (SMT)
20
25
150
220
0.026
0.150
10 × 10,2
10 × 10,2
1
1
≤
2
1
EEFWA1D151P
EEVFC1E221P
Panasonic SL
SP-cap(SMT)
6.3
6.3
47
120
0.018
0.007
2500
3500
7,3 × 4,3
7,3 × 4,3
N/R
(3)
N/R
(3)
≤
3
≤
1
≤
2
EEFCD0J470R
EEFSD0J121R
United Chemi-con PXA
(SMT)
16
150
0.026
3400
10 × 7,7
1
PXA16VC151MJ80TP
V
I
< 14 V
25PS100MJ12
LXZ35VB221M10X12LL
MVY35VC331MJ10TP
PS
LXZ
MVY (SMT)
25
35
35
100
220
333
0.020
0.180
0.150
4300
760
670
10 × 12,5
10 × 12,5
10 × 10
1
1
1
≤
2
1
1
Nichicon UWG (SMT)
F559(Tantalum)
HD
35
10
25
100
100
220
0.150
0.055
0.072
670
2000
760
10 × 10
7,7 × 4,3
8 × 11,5
1
1
UWG1V101MNR1GS
F551A107MN
UHD1E221MPR
N/R
(3)
1
≤
3
1
Sanyo Os-con\ POS-Cap
SVP (SMT)
SP
10
20
20
68
150
120
0.025
0.020
0.024
2400
4320
3110
7,3 × 4,3
10 × 12,7
8 × 10,5
N/R
(3)
1
1
≤
2
≤
1
≤
2
≤
4
≤
4
10TPE68M
20SVP150M
20SP120M
AVX Tantalum TPS (SMD)
35
25
47
47
0.100
0.100
1430
1150
7,3 L × 4,3
W × 4,1 H
2
2
TPSV476M035R0100
TPSE476M025R0100
V
I
< 13 V
T520V107M010ASE025
A700V107M006AT
Kemet T520 (SMD)
AO-CAP
10
6.3
100
100
0.025
0.018
> 2000
> 2900
7,3 L × 5,7
W × 4 H
N/R
(3)
N/R
(3)
≤
1
≤
1
≤
5
≤
2
Vishay/Sprague
594D/SVP(SMD)
35
20
47
100
0.280
0.025
> 1000
3200
7,3 L × 6 W
× 4,1 H 8 ×
12
2
1
595D476X0035R2T
94SVP107X0020E12
94SS
20
150
0.030
3200
10 × 10,5
1
≤
2
≤
3
94SS157X0020FBP
Murata Ceramic X5R
16
47
0.002
> 1400
3225
1
(4)
GRM32ER61C476M
V
I
< 14 V
C3225X5R0J476MT
V
O
< 5.5 V
C1210C476K9PAC
V
O
< 5.5 V
C3225X7R1E106K
GRM32DR61E106KA12
C1210C106M4PAC
V
I
< 14 V
C3225X7R1E225KT/MT
GRM32RR71J225KC01L
C1210C225K3RAC
TDK ceramic X5R
6.3
47
0.002
> 1400
3225
N/R
(3)
≤
3
Kemet Ceramic X5R
6.3
47
0.002
> 1400
3225
N/R
(3)
≤
3
TDK Ceramic X7R
Murata Ceramic X5R
Kemet
25
25
16
10
10
10
0.002
0.002
0.002
> 1400
> 1400
> 1400
3225
1
(4)
1
(4)
1
(4)
≤
4
≤
4
≤
4
TDK Ceramic X7R
Murata Ceramic X7R
Kemet
25
25
25
2.2
2.2
2.2
0.002
0.002
0.002
> 1400
> 1400
> 1400
3225
1
1
1
1
1
1
(1)
(2)
Check with capacitor manufacturers for availability and lead-free status.
The voltage rating of the input capacitor must be selected for the desired operating input voltage range of the regulator. To operate the
regulator at a higher input voltage, select a capacitor with a higher voltage rating.
The voltage rating of the input capacitor must be selected for the desired operating input voltage range of the regulator. To operate the
regulator at a higher input voltage, select a capacitor with a higher voltage rating.
Ceramic capacitors can be used to complement electrolytic types at the input bus by reducing high-frequency ripple current.
(3)
(4)
10
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PTH08000WAZ2 制造商:TI 制造商全稱:Texas Instruments 功能描述:2.25-A, WIDE INPUT, ADJUSTABLE SWITCHING REGULATOR
PTH08000WAZT 功能描述:DC/DC轉(zhuǎn)換器 2.25A 5/12V Input WideAdj Module RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風格:SMD/SMT 封裝 / 箱體尺寸:
PTH08080W 制造商:TI 制造商全稱:Texas Instruments 功能描述:2.25-A, WIDE-INPUT ADJUSTABLE SWITCHING REGULATOR
PTH08080WAD 功能描述:DC/DC轉(zhuǎn)換器 2.25A Wide Input/ Out Adj Mini Pwr Mdl RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風格:SMD/SMT 封裝 / 箱體尺寸:
PTH08080WAH 功能描述:DC/DC轉(zhuǎn)換器 2.25A Wide Input/ Out Adj Mini Pwr Mdl RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風格:SMD/SMT 封裝 / 箱體尺寸:
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