參數(shù)資料
型號: PTV08T250WAD
廠商: TEXAS INSTRUMENTS INC
元件分類: 電源模塊
英文描述: 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
文件頁數(shù): 6/30頁
文件大?。?/td> 795K
代理商: PTV08T250WAD
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
WithTurboTrans
WithoutTurboTrans
8
5
6
7
4
V =12V
I
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
WithoutTurboTrans
V =8V
I
RTT Resistor Selection
R
=40
TT
kW
1-(C
/3300)
O
5x(C
/3300)-1
O
(2)
SLTS260E – OCTOBER 2005 – REVISED NOVEMBER 2008 .......................................................................................................................................... www.ti.com
Type B Capacitor
12 V Input
8 V Input
Figure 11. Cap Type B, 1000
≤ C(
F)xESR(m) ≤ 5000,
Figure 12. Cap Type B, 1000
≤ C(
F)xESR(m) ≤ 5000,
(e.g. Polymer-Tantalum)
Table 3. Type B 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 (
)
90
180
270
660
open
660
open
80
160
240
660
open
820
133 k
70
140
210
660
open
1000
56.2
60
120
180
880
95.3 k
1250
28.0 k
50
100
150
1200
30.9 k
1650
13.7 k
40
80
120
1800
10.5 k
2300
5.11 k
35
70
105
2300
4.99 k
2800
1.96 k
30
60
90
3050
909
3900
0
25
50
75
6900
0
9900
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.)
14
Copyright 2005–2008, Texas Instruments Incorporated
Product Folder Link(s): PTV08T250W
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