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IP1202 Fiches technique(PDF) 6 Page - International Rectifier

No de pièce IP1202
Description  Dual Output Full Function 2 Phase Synchronous Buck Power Block Integrated Power Semiconductors, PWM Control & Passives
Download  29 Pages
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Fabricant  IRF [International Rectifier]
Site Internet  http://www.irf.com
Logo IRF - International Rectifier

IP1202 Fiches technique(HTML) 6 Page - International Rectifier

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6
iP1202
Fig. 6: Normalized Power Loss vs. Frequency
Fig. 4: Normalized Power Loss vs. V
IN
Fig. 5: Normalized Power Loss vs. V
OUT
Fig. 7: Normalized Power Loss vs. Inductance
0.955
0.970
0.985
1.000
1.015
1.030
1.045
1.060
1.075
1.090
1.105
1.120
0.5
1
1.522.5
33.5
4
4.5
5
Output Voltage (V )
-1.5
-1.0
-0.5
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
VIN =12V
IOU T 1 =IOU T 2 =15A
f SW =300kHz
L =1.0
µ H
T BLK =125°C
0.910
0.925
0.940
0.955
0.970
0.985
1.000
1.015
1.030
1.045
1.060
200
250
300
350
400
Sw itching Frequency (kHz)
-3.0
-2.5
-2.0
-1.5
-1.0
-0.5
0.0
0.5
1.0
1.5
2.0
VIN =12V
VOUT 1 =VOUT 2 =1.5V
IOUT 1 =IOUT 2 =15A
L =1.0µ H
T BLK =125°C
0.97
1.00
1.03
1.06
1.09
1.12
1.15
1.18
1.21
1.24
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
2.6
Output Inductance (PH)
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
VIN =12V
VOUT 1 =VOU T 2 =1.5V
IOU T 1 =IOU T 2 =15A
f SW =300kHz
T BLK =125°C
Fig. 8: Nominal Overcurrent Threshold Setting
External Resistor Selection
0.925
0.940
0.955
0.970
0.985
1.000
1.015
1.030
1.045
1.060
5
6
7
8
9
10
11
12
13
14
Input Voltage (V)
-2.5
-2.0
-1.5
-1.0
-0.5
0.0
0.5
1.0
1.5
2.0
VOUT 1 =VOUT 2 =1.5V
IOUT 1 =IOU T 2 =15A
f SW =300kHz
L =1.0µ H
T BLK =125°C
200
220
240
260
280
300
320
340
360
380
400
20
25
30
35
40
45
50
RT in kOhms
Fig. 9: Per Channel Switching Frequency vs R
T
6
8
10
12
14
16
18
20
22
24
Overload Current (A)
5
25
45
65
85
105
125
145
165
185
205
5
10
15
20
25
30
35
40
45
50
55
VOUT = 1.5V
fsw
= 300kHz
L
= 1.0µH
TBLK = 125°C
Vin = 12V
Vin = 5.5V


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