Switching Frequency (kHz)

200

400

600

800 1000 1200 1400 1600 1800 2000 2200

0

5

10

15

20

25

30

35

40

D009

TC - Junction Temperature (qC)

-75

-50

-25

0

25

50

75

100

125

150

8.7

8.8

8.9

9

9.1

9.2

9.3

9.4

9.5

D010

Output Voltage (V)

0.8

1.2

1.6

2

2.4

2.8

3.2

3.6

0.7

-3.3

0.8

-2.2

0.9

-1.1

1

0.0

1.1

1.1

1.2

2.2

1.3

3.3

1.4

4.4

D007

Output Inductance (nH)

0

200

400

600

800

1000

1200

0.85

-1.7

0.9

-1.1

0.95

-0.6

1

0.0

1.05

0.6

1.1

1.1

1.15

1.7

1.2

2.2

D008

Switching Frequency (kHz)

200

400

600

800 1000 1200 1400 1600 1800 2000 2200

0.95

-0.5

1

0.0

1.05

0.5

1.1

1.1

1.15

1.6

1.2

2.2

1.25

2.7

1.3

3.3

1.35

3.8

D005

Input Voltage (V)

3

5

7

9

11

13

15

17

19

21

23

0.98

-0.2

1

0.0

1.02

0.2

1.04

0.4

1.06

0.7

1.08

0.9

1.1

1.1

1.12

1.3

1.14

1.6

D006

CSD97396Q4M

www.ti.com

SLPS572 – DECEMBER 2015

Typical Application (continued)

TJ = 125°C, unless stated otherwise. The Typical CSD97396Q4M System Characteristic curves (see Figure 6 and Figure 7)

are based on measurements made on a PCB design with dimensions of 4.0" (W) × 3.5" (L) × 0.062" (T) and 6 copper layers

of 1 oz. copper thickness. See System Example for detailed explanation.

VIN = 12 V

VDD = 5 V

VOUT = 1.8 V

IOUT = 25 A

VDD = 5 V

VOUT = 1.8 V

IOUT = 25 A

LOUT = 0.29 µH

ƒSW = 500 kHz

LOUT = 0.29 µH

Figure 8. Normalized Power Loss vs Frequency

Figure 9. Normalized Power Loss vs Input Voltage

VIN = 12 V

VDD = 5 V

IOUT = 25 A

VIN = 12 V

VDD = 5 V

IOUT = 25 A

ƒSW = 500 kHz

LOUT = 0.29 µH

ƒSW = 500 kHz

VOUT = 1.8 V

Figure 10. Normalized Power Loss vs Output Voltage

Figure 11. Normalized Power Loss vs Output Inductance

VIN = 12 V

VDD = 5 V

IOUT = 25 A

VIN = 12 V

VDD = 5 V

VOUT = 1.8 V

LOUT = 0.29 µH

VOUT = 1.8 V

IOUT = 25 A

LOUT = 0.29 µH

Figure 12. Driver Current vs Frequency

Figure 13. Driver Current vs Temperature

Copyright © 2015, Texas Instruments Incorporated

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