參數(shù)資料
型號(hào): PTH04T231WAS
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
封裝: DIP-10
文件頁(yè)數(shù): 13/36頁(yè)
文件大?。?/td> 1160K
代理商: PTH04T231WAS
C Capacitance
F
T
ransient
mV/A
Without TurboTrans
With TurboTrans
40
30
20
4
5000
4000
3000
1000
900
300
200
500
400
700
600
800
2000
10
6
5
8
7
9
C Capacitance
F
T
ransient
mV/A
Without TurboTrans
With TurboTrans
40
30
20
4
5000
4000
3000
1000
900
300
200
500
400
700
600
800
2000
10
6
5
8
7
9
R
TT + 40
1 * CO 1250
C
O
250 * 1
kW
(4)
SLTS271C – SEPTEMBER 2006 – REVISED MARCH 2009 ............................................................................................................................................. www.ti.com
PTH04T230W Type C Capacitors
5-V Input
3.3-V Input
Figure 14. Capacitor Type C, 5000 < C(
F) x ESR(m) ≤
Figure 15. Capacitor Type C, 5000 < C(
F) x ESR(m) ≤
10,000
(e.g. OS-CON)
Table 6. 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
(1.5 A)
(3 A)
(4.5 A)
Required Output
TurboTrans
Required Output
TurboTrans
Capacitance (
F)
Resistor (k
)
Capacitance (
F)
Resistor (k
)
50
100
150
270
487
250
open
40
80
120
360
66.5
350
76.8
35
70
105
430
36.5
420
39.2
30
60
90
520
21.5
520
21.5
25
50
75
660
11.5
670
11.0
20
40
60
890
4.53
920
3.83
15
30
45
1420
short
1630
short
12
20
30
3050
short
3700
short
RTT Resistor Selection
The TurboTrans resistor value, RTT can be determined from the TurboTrans programming equation:
Where CO is the total output capacitance in F. CO values greater than or equal to 1250 F require RTT to be
a short, 0
.
To ensure stability, a minimum amount of output capacitance is required for a given RTT resistor value. The
value of RTT must be calculated using the minimum required output capacitance determined from the
capacitor transient response charts above.
20
Copyright 2006–2009, Texas Instruments Incorporated
Product Folder Link(s): PTH04T230W PTH04T231W
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