参数资料
型号: PTH08T250WAZ
厂商: TEXAS INSTRUMENTS INC
元件分类: 电源模块
英文描述: 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
文件页数: 8/39页
文件大小: 2220K
代理商: PTH08T250WAZ
1
0
6
0
7
0
5
0
4
0
3
0
2
0
1
0
6
0
8
5
6
Without TurboTrans
With TurboTrans
8
0
9
0
7
0
8
0
9
0
4
2
3
1
7
C - Capacitance - mF
T
ra
n
s
ie
n
t
-
m
V
/A
1
0
6
0
7
0
5
0
4
0
3
0
2
0
1
0
6
0
8
5
6
Without TurboTrans
With TurboTrans
8
0
9
0
7
0
8
0
9
0
4
2
3
1
7
C - Capacitance - mF
T
ra
n
s
ie
n
t
-
m
V
/A
(
)
(
)
O
TT
O
1
C
3300
R
40
(k
)
5
C
3300
1
-
=
W
-
SLTS278G – NOVEMBER 2010 – REVISED MARCH 2009
www.ti.com
PTH08T250W Type B Capacitors
12-V INPUT
5-V INPUT
Figure 12. Capacitor Type B,
Figure 13. Capacitor Type B,
1000 < C(mF)×ESR(m) ≤ 5000 (e.g.
Polymer-Tantalum)
Table 4. Type B TurboTrans CO Values and Required RTT Selection Table
Transient Voltage Deviation (mV)
12 Volt Input
5 Volt Input
25% load step
50% load step
75% load step
CO
RTT
CO
RTT
(12.5 A)
(25 A)
(37.5 A)
Minimum
Required
Minimum
Required
Required Output
TurboTrans
Required Output
TurboTrans
Capacitance (mF)
Resistor (k
)
Capacitance (mF)
Resistor (k
)
100
200
300
660
open
660
open
85
170
255
660
open
750
226
75
150
225
800
143
870
93.1
60
120
180
1050
46.4
1150
34.8
50
100
150
1300
24.9
1450
18.7
40
70
105
1750
11.3
1950
8.45
30
60
90
2500
3.48
2800
1.87
25
50
75
3100
0.649
4000
short
RTT Resistor Selection
The TurboTrans resistor value, RTT can be determined from the TurboTrans programming Equation 2.
(2)
Where CO is the total output capacitance in mF. CO values greater than or equal to 3300 mF require RTT to be a
short, 0
. (Equation 2 results in a negative value for RTT when CO > 3300 mF.)
To ensure stability, a minimum amount of output capacitance is required for a given RTT resistor value. The value
of RTT must be calculated using the minimum required output capacitance determined from Figure 12 and
16
Copyright 2010–2009, Texas Instruments Incorporated
Product Folder Link(s): PTH08T250W
相关PDF资料
PDF描述
PTH08T255WAS DC-DC REG PWR SUPPLY MODULE
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PTH08T250WBD 制造商:Texas Instruments 功能描述:
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PTH08T255WAS 功能描述:DC/DC转换器 40A,8-14V In,3-5.25V Out,Non-Iso Pwr Mod RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压(标称): 输出端数量:1 输出电压(通道 1):3.3 V 输出电流(通道 1):600 mA 输出电压(通道 2): 输出电流(通道 2): 安装风格:SMD/SMT 封装 / 箱体尺寸:
PTH08T255WAST 功能描述:DC/DC转换器 40A,8-14V In,3-5.25V Out,Non-Iso Pwr Mod RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压(标称): 输出端数量:1 输出电压(通道 1):3.3 V 输出电流(通道 1):600 mA 输出电压(通道 2): 输出电流(通道 2): 安装风格:SMD/SMT 封装 / 箱体尺寸: