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PTH04T240FAST bảng dữ liệu(PDF) 17 Page - Texas Instruments

tên linh kiện PTH04T240FAST
Giải thích chi tiết về linh kiện  10-A, 2.2-V to 5.5-V INPUT, NON-ISOLATED POWER MODULE FOR 3-GHz DSP SYSTEMS
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Trang chủ  http://www.ti.com
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PTH04T240F Type C Capacitors
C - Capacitance - mF
3.3-V INPUT
9
8
20
10
7
6
5
2
1
4
3
C - Capacitance - mF
5-V INPUT
9
8
20
10
7
6
5
2
1
4
3
(
)
(
)
(
)
O
TT
O
40
1
C
5000
R
k
C
1000
1
é
ù
´
-
ë
û
=
W
é
ù
-
ë
û
(3)
PTH04T240F
www.ti.com ............................................................................................................................................... SLTS293A – DECEMBER 2008 – REVISED MARCH 2009
Figure 12. Capacitor Type C, 5000 < C(
µF)×ESR(mΩ) ≤
Figure 13. Capacitor Type C, 5000 < C(
µF)×ESR(mΩ) ≤
10,000 (e.g. OS-CON)
10,000 (e.g. OS-CON)
Table 5. Type C TurboTrans CO Values and Required RTT Selection Table
TRANSIENT VOLTAGE DEVIATION (mV)
5-V INPUT
3.3-V INPUT
CO
RTT
CO
RTT
25% load step
50% load step
75% load step
Minimum
Required
Minimum
Required
(2.5 A)
(5 A)
(7.5 A)
Required Output
TurboTrans
Required Output
TurboTrans
Capacitance (
µF)
Resistor (k
Ω)
Capacitance (
µF)
Resistor (k
Ω)
25
50
75
1000
open
1000
open
22
44
66
1150
205
1170
178
20
40
60
1280
107
1300
97.6
18
36
54
1440
64.9
1450
63.4
15
30
45
1750
34.8
1750
34.8
12
24
36
2250
17.4
2220
18.2
10
20
30
2740
10.5
2680
11.0
8
16
24
3500
4.75
3400
5.36
5
10
5
6900
short
6300
short
RTT Resistor Selection
The TurboTrans resistor value, RTT can be determined from the TurboTrans programming, see Equation 3.
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 > 5000µF).
To ensure stability, the value of RTT must be calculated using the minimum required output capacitance
determined from the capacitor transient response charts above.
Copyright © 2008–2009, Texas Instruments Incorporated
Submit Documentation Feedback
17
Product Folder Link(s): PTH04T240F



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