CSD87351ZQ5D_15 datasheet(5/22 Pages) TI

Part #	CSD87351ZQ5D

Description	Synchronous Buck NexFET??Power Block

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Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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5 / 22 page

0.5

1

1.5

2

2.5

3

3.5

4

0.6

0.7

0.8

0.9

1

1.1

1.2

1.3

1.4

1.5

1.6

−9.7

−7.3

−4.8

−2.4

0

2.4

4.8

7.3

9.7

12.1

14.5

Output Voltage (V)

VIN = 12V

VGS = 5V

fSW = 500kHz

LOUT = 0.3µH

IOUT = 35A

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

1.1

0.6

0.7

0.8

0.9

1

1.1

1.2

1.3

1.4

1.5

1.6

−9.7

−7.2

−4.8

−2.4

0

2.4

4.8

7.2

9.7

12.1

14.5

Output Inductance (µH)

VIN = 12V

VGS = 5V

VOUT = 1.3V

fSW = 500kHz

IOUT = 35A

200

350

500

650

800

950

1100 1250 1400 1550

0.6

0.7

0.8

0.9

1

1.1

1.2

1.3

1.4

1.5

1.6

−9.7

−7.2

−4.8

−2.4

0.0

2.4

4.8

7.2

9.7

12.1

14.5

Switching Frequency (kHz)

VIN = 12V

VGS = 5V

VOUT = 1.3V

LOUT = 0.3µH

IOUT = 35A

3

5

7

9

11

13

15

17

19

21

23

0.6

0.7

0.8

0.9

1

1.1

1.2

1.3

1.4

1.5

1.6

−9.7

−7.2

−4.8

−2.4

0.0

2.4

4.8

7.2

9.7

12.1

14.5

Input Voltage (V)

VGS = 5V

VOUT = 1.3V

LOUT = 0.3µH

fSW = 500kHz

IOUT = 35A

CSD87351ZQ5D

www.ti.com

SLPS426 – DECEMBER 2012

TYPICAL POWER BLOCK DEVICE CHARACTERISTICS (continued)

TJ = 125°C, unless stated otherwise.

TEXT ADDED FOR SPACING

Figure 6. Normalized Power Loss vs Switching Frequency

Figure 7. Normalized Power Loss vs Input Voltage

TEXT ADDED FOR SPACING

Figure 8. Normalized Power Loss vs. Output Voltage

Figure 9. Normalized Power Loss vs. Output Inductance

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