IP1203TRPBF datasheet(6/23 Pages) IRF

Part #	IP1203TRPBF

Description	Single Output Full Function Synchronous Buck Power Block

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Manufacturer	IRF [International Rectifier]

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6

iP1203PbF

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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