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参数资料
| 型号： | IRDCIP2005C-2 |
| 厂商： | International Rectifier |
| 文件页数： | 9/15页 |
| 文件大小： | 0K |
| 描述： | BOARD DEMO SYNC BUCK CONVETER |
| 产品变化通告： | (EP) Parts Discontinuation 25/May/2012 |
| 标准包装： | 1 |
| 系列： | * |
i P2005CPbF
PD-60360
Calculating SOA Temperature :
(Figure 3) SOA temperature adjustment for input voltage ≈ -0.6oC
(Figure 5) SOA temperature adjustment for output inductor ≈ 0.25 oC
(Figure 6) SOA temperature adjustment for switch frequency ≈ -2.5 oC
T X axis intercept adjustment ≈ -0.6 oC + 0.25 oC – 2.5 oC ≈ -2.9 oC
Assuming T PCB = 100oC & T CASE = 110oC, the following example shows how the SOA current is
adjusted for T X decrease of 2.8 oC
Case Temperature (oC)
0
10
20
30
40
50
60
70
80
90
100
110
120
130
44
40
36
32
5
3
28
24
Safe
2
20
16
12
8
4
Operating
Area
V I = 12V
V D = 5.0V
V O = 1.3V
F sw = 1MHz
L O = 300nH
4
1
Tx
0
0
10
20
30
40
50
60
70
80
90
100
110
120
130
PCB Temperature (oC)
1. Draw a line from Case Temperature axis to the PCB Temperature axis.
2. Draw a vertical line from the T X axis intercept to the SOA curve.
3. Draw a horizontal line from the intersection of the vertical line with the SOA curve to the Y-axis
(Output Current). The point at which the horizontal line meets the Y-axis is the SOA
continuous current.
4. Draw a new vertical line from the T X axis by adding or subtracting the SOA adjustment
temperature from the original T X intercept point.
5.
Draw a horizontal line from the intersection of the new vertical line with the SOA curve to the
Y-axis (Output Current). The point at which the horizontal line meets the Y-axis is the new
SOA continuous current .
The SOA adjustment indicates the part is still allowed to run at a continuous current of 39A.
www.irf.com
04/09/2009
9
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| IRDCIP2005C-1 | BOARD DEMO SYNC BUCK CONVETER |
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