參數(shù)資料
型號： NCP1523
廠商： Texas Instruments, Inc.
英文描述： 6-A, 2.2-V to 5.5-V INPUT, NON-ISOLATED, WIDE-OUTPUT, ADJUSTABLE POWER MODULE WITH TurboTrans
中文描述： 6甲，2.2 V至5.5 V輸入，非隔離，寬輸出，可調(diào)電源模塊的TurboTrans
文件頁數(shù)： 20/35頁
文件大小： 1128K
代理商： NCP1523
www.ti.com
C Capacit1
μ
F
T
Without TurboTrans
With TurboTrans
40
30
20
4
5
4
3
9
3
2
5
4
7
6
8
2
10
6
5
8
7
9
C Capacitance
μ
F
T
Without TurboTrans
With TurboTrans
40
30
20
4
5
4
3
1
9
3
2
5
4
7
6
8
2
10
6
5
8
7
9
R
TT
40
1
C
O
1250
C
O
250
1
k
(4)
PTH04T230W, PTH04T231W
SLTS271A–SEPTEMBER 2006–REVISED OCTOBER 2006
PTH04T230W Type C Capacitors
5-V Input
3.3-V Input
Figure 14. Capacitor Type C, 5000 < C(
μ
F) x ESR(m
)
≤
10,000
(e.g. OS-CON)
Figure 15. Capacitor Type C, 5000 < C(
μ
F) x ESR(m
)
≤
10,000
(e.g. OS-CON)
Table 6. Type C TurboTrans C
O
Values and Required R
TT
Selection Table
Transient Voltage Deviation (mV)
5-V Input
3.3 V Input
C
R
C
R
Minimum
Required Output
Capacitance
(
μ
F)
270
360
430
520
660
890
1420
3050
Required
TurboTrans
Resistor (k
)
Minimum
Required Output
Capacitance (
μ
F)
Required
TurboTrans
Resistor (k
)
25% load step
(1.5 A)
50% load step
(3 A)
75% load step
(4.5 A)
50
40
35
30
25
20
15
12
100
80
70
60
50
40
30
20
150
120
105
90
75
60
45
30
487
66.5
36.5
21.5
11.5
4.53
short
short
250
350
420
520
670
920
1630
3700
open
76.8
39.2
21.5
11.0
3.83
short
short
R
TT
Resistor Selection
The TurboTrans resistor value, R
TT
can be determined from the TurboTrans programming equation:
Where C
O
is the total output capacitance in
μ
F. C
O
values greater than or equal to 1250
μ
F require R
TT
to
be a short, 0
.
To ensure stability, a minimum amount of output capacitance is required for a given R
TT
resistor value. The
value of R
TT
must be calculated using the minimum required output capacitance determined from the
capacitor transient response charts above.
20
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