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PTH08T240FAS датащи(PDF) 16 Page - Texas Instruments

номер детали PTH08T240FAS
подробное описание детали  10-A, 4.5-V to 14-V INPUT, NON-ISOLATED POWER MODULE FOR 3-GHz DSP SYSTEMS
PDF  37 Pages
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домашняя страница  http://www.ti.com
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PTH08T240FAS датащи(HTML) 16 Page - Texas Instruments

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PTH08T240F Type B Capacitors
10
7
6
5
4
3
2
1
9
8
C - Capacitance - mF
10
7
6
5
4
3
2
1
9
8
C - Capacitance - mF
(
)
(
)
(
)
O
TT
O
40
1
C
5000
R
k
C
1000
1
é
ù
´
-
ë
û
=
W
é
ù
-
ë
û
(2)
PTH08T240F
SLTS277C – DECEMBER 2006 – REVISED DECEMBER 2008........................................................................................................................................ www.ti.com
8-V Input
5-V Input
Figure 14. Capacitor Type B,
Figure 15. Capacitor Type B,
1000 < C(
µF)×ESR(mΩ) ≤ 5000
1000 < C(
µF)×ESR(mΩ) ≤ 5000
(e.g. Polymer-Tantalum)
(e.g. Polymer-Tantalum)
Table 4. Type B TurboTrans CO Values and Required RTT Selection Table
Transient Voltage Deviation (mV)
8-V Input
5-V Input
25% load step
50% load step
75% load step
CO
RTT
CO
RTT
(2.5 A)
(5 A)
(7.5 A)
Minimum
Required
Minimum
Required
Required Output
TurboTrans
Required Output
TurboTrans
Capacitance (
µF)
Resistor (k
Ω)
Capacitance (
µF)
Resistor (k
Ω)
20
40
60
1000
open
1060
576
18
36
54
1040
866
1200
147
16
32
48
1200
147
1400
71.5
14
28
42
1440
64.9
1660
40.2
12
24
36
1760
34.0
2020
23.2
10
20
30
2230
18.2
2550
12.7
8
16
24
3000
8.06
3400
5.36
6
12
18
4350
1.54
4900
0.205
RTT Resistor Selection
The TurboTrans resistor value, RTT can be determined from the TurboTrans programming, see Equation 2.
Where CO is the total output capacitance in µF. CO values greater than or equal to 5000 µF require RTT to be a
short, 0
Ω. (RTT results in a negative value when CO > 5000 µF).
To ensure stability, the value of RTT must be calculated using the minimum required output capacitance
determined from the capacitor transient response charts above.
16
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Copyright © 2006–2008, Texas Instruments Incorporated
Product Folder Link(s): PTH08T240F



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