参数资料
型号: PTV08T250WAH
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: 5/30页
文件大小: 795K
代理商: PTV08T250WAH
C-Capacitance- F
m
T
ransient-mV/A
600
700
800
900
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
3
2
1
8
5
6
7
4
WithTurboTrans
V =12V
I
WithoutTurboTrans
C-Capacitance- F
m
T
ransient-mV/A
600
700
800
900
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
10
5
6
7
8
9
4
3
2
1
WithTurboTrans
WithoutTurboTrans
V =8V
I
RTT Resistor Selection
R
=40
TT
kW
1-(C
/3300)
O
5x(C
/3300)-1
O
(1)
www.ti.com .......................................................................................................................................... SLTS260E – OCTOBER 2005 – REVISED NOVEMBER 2008
Type A Capacitor
12 V Input
8 V Input
Figure 9. Cap Type A, 100
≤ C(
F)xESR(m) ≤ 1000, (e.g.
Figure 10. Cap Type A, 100
≤ C(
F)ESR(m) ≤ 1000, (e.g.
Ceramic)
Table 2. Type A TurboTrans CO Values & Required RTT Selection Table
Transient Voltage Deviation (mV)
12 V Input
8 V Input
25%
50%
75%
CO
RTT
CO
RTT
load step
Minimum Required
Required
Minimum Required
Required
(12.5 A)
(25 A)
(37.5 A)
Output Capacitance
TurboTrans
Output Capacitance
TurboTrans
(
F)
Resistor (
)
(
F)
Resistor (
)
100
200
300
700
499 k
950
66.5 k
90
180
270
820
130 k
1100
42.2 k
80
160
240
960
63.4 k
1250
27.4 k
70
140
210
1200
34.8 k
1500
17.4 k
60
120
180
1450
19.6 k
1800
10.5 k
50
100
150
1850
9.76 k
2300
4.99 k
40
80
120
2600
3.32 k
3100
866
35
70
105
3100
845
3800
0
30
60
90
6400
0
7700
0
The TurboTrans resistor value, RTT can be determined from the TurboTrans programming equation, see
Where CO is the total output capacitance in F. CO values greater than or equal to 3300 F require RTT to be a
short, 0
. (RTT results in a negative value when CO > 3300 F.)
Copyright 2005–2008, Texas Instruments Incorporated
13
Product Folder Link(s): PTV08T250W
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