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IP1203 Datasheet(PDF) 6 Page - International Rectifier

Part # IP1203
Description  Single Output Full Function Synchronous Buck Power Block
PDF  23 Pages
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Manufacturer  IRF [International Rectifier]
Direct Link  http://www.irf.com
Logo IRF - International Rectifier

IP1203 Datasheet(HTML) 6 Page - International Rectifier

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6
iP1203
Fig. 6: Normalized Power Loss vs. Frequency
Fig. 4: Normalized Power Loss vs. V
IN
Fig. 5: Normalized Power Loss vs. V
OUT
Typical Performance Curves
Fig. 7: Normalized Power Loss vs. Inductance
0.4
0.8
1.2
1.6
2.0
2.4
Output Inductance (µH)
0.96
1.00
1.04
1.08
1.12
1.16
1.20
1.24
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
VIN = 12V
VOUT = 1.5V
IOUT = 15A
fsw = 300kHz
TBLK = 125°C
Fig. 8: Nominal Overcurrent Threshold Setting
External Resistor Selection
Fig. 9: Switching Frequency vs R
T
200
250
300
350
400
Swiching Frequency (kHz)
0.960
1.000
1.040
1.080
1.120
-0.5
0.0
0.5
1.0
1.5
VIN = 12V
VOUT = 1.5V
IOUT = 15A
L = 1.0µH
TBLK = 125°C
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
20
25
30
35
40
45
50
RT (kOhms)
200
220
240
260
280
300
320
340
360
380
400
0.8
1.6
2.4
3.2
4.0
4.8
5.6
6.4
7.2
8.0
Output Voltage (V)
0.92
0.96
1.00
1.04
1.08
1.12
1.16
1.20
1.24
1.28
1.32
1.36
-2
-1
0
1
2
3
4
5
6
7
8
9
10
VIN = 12V
IOUT = 15A
fsw = 300kHz
L
= 1.0µH
TBLK = 125°C
5
6
7
8
9
10
11
12
13
14
Input Voltage (V)
0.96
0.98
1.00
1.02
1.04
1.06
-1.0
-0.5
0.0
0.5
1.0
1.5
VOUT = 1.5V
IOUT = 15A
fsw = 300kHz
L
= 1.0µH
TBLK = 125°C



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