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PTH04T241WAS Datasheet(PDF) 20 Page - Texas Instruments

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Part # PTH04T241WAS
Description  10-A, 2.2-V to 5.5-V INPUT, NON-ISOLATED, WIDE-OUTPUT, ADJUSTABLE POWER MODULE WITH TURBOTRANS?
PDF  38 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

PTH04T241WAS Datasheet(HTML) 20 Page - Texas Instruments

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PTH04T240W Type B Capacitors
9
8
20
10
30
7
6
5
4
3
C − Capacitance −
µF
Without TurboTrans
With TurboTrans
C − Capacitance −
µF
9
8
20
10
30
7
6
5
4
3
Without TurboTrans
With TurboTrans
R
TT +
40
1 * CO 1100
C
O 220 * 1
(kW)
(3)
PTH04T240W, PTH04T241W
SLTS276D – OCTOBER 2006 – REVISED JULY 2009 ...................................................................................................................................................... www.ti.com
5-V Input
3.3-V Input
Figure 12. Capacitor Type B,
Figure 13. Capacitor Type B,
1000 < C(
µF)×ESR(mΩ) ≤ 5000
1000 < C(
µF)×ESR(mΩ) ≤ 5000
(e.g. Polymer-Tantalum)
(e.g. Polymer-Tantalum)
Table 5. Type B TurboTrans CO Values and Required RTT Selection Table
Transient Voltage Deviation (mV)
5-V Input
3.3-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)
70
140
210
220
open
220
open
60
120
180
240
464
270
158
50
100
150
300
80.6
330
56.2
40
80
120
410
30.1
450
24.3
30
60
90
600
10.7
620
9.53
25
50
75
760
4.99
780
4.64
20
40
60
1050
0.75
1050
0.75
15
30
45
2400
short
2250
short
10
20
30
10000
short
7900
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 1100 µF require RTT to be a
short, 0
Ω. (RTT results in a negative value when CO > 1100µF).
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 © 2006–2009, Texas Instruments Incorporated
Product Folder Link(s): PTH04T240W PTH04T241W



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