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PTH08T231WAS Datasheet(PDF) 20 Page - Texas Instruments

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Part # PTH08T231WAS
Description  6-A, 4.5-V to 14-V INPUT, NON-ISOLATED, WIDE-OUTPUT, ADJUSTABLE POWER MODULE WITH TurboTrans?
PDF  36 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

PTH08T231WAS Datasheet(HTML) 20 Page - Texas Instruments

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C − Capacitance −
µF
20
10
9
8
7
30
40
50
60
Without TurboTrans
With TurboTrans
C − Capacitance −
µF
20
10
9
8
7
30
40
50
60
Without TurboTrans
With TurboTrans
R
TT
=40x
1-(C
/1000)
O
5 x(C
/1000)-1
O
(k
)
W
[]
(4)
PTH08T230W, PTH08T231W
SLTS265F – NOVEMBER 2005 – REVISED MAY 2007
PTH08T230W Type C Capacitors
12-V INPUT
5-V INPUT
Figure 16. Capacitor Type C, 5000 < C(
µF) x ESR(mΩ) ≤
Figure 17. Capacitor Type C, 5000 < C(
µF) x ESR(mΩ) ≤
10,000
10,000
(e.g. OS-CON)
(e.g. OS-CON)
Table 6. Type C TurboTrans CO Values and Required RTT Selection Table
Transient Voltage Deviation (mV)
12 V Input
5 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 (
µF)
Resistor (k
Ω)
Capacitance (
µF)
Resistor (k
Ω)
75
150
225
200
open
200
open
60
120
180
230
205
250
121
50
100
150
300
56.2
310
49.9
40
80
120
390
25.5
400
24.3
30
60
90
570
9.31
580
8.87
25
50
75
720
4.32
730
4.12
20
40
60
960
0.422
980
0.205
15
30
45
3100
short
4000
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 µF. CO values greater than or equal to 1000 µF require RTT to be
a short, 0
Ω.
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
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Copyright © 2005–2007, Texas Instruments Incorporated
Product Folder Link(s): PTH08T230W PTH08T231W



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