0

200

400

600

800

1000

1200

1400

1600

0.7

0.8

0.9

1

1.1

1.2

1.3

1.4

1.5

−3.3

−2.2

−1.1

0.0

1.1

2.2

3.3

4.5

5.6

Switching Frequency (kHz)

G001

0

2

4

6

8

10

12

14

16

18

20

22

24

0.9

0.95

1

1.05

1.1

1.15

1.2

−1.1

−0.6

0.0

0.6

1.1

1.7

2.3

Input Voltage (V)

G001

0

5

10

15

20

0

10

20

30

40

50

60

70

80

90

Ambient Temperature (ºC)

400LFM

200LFM

100LFM

Nat Conv

G001

0

5

10

15

20

0

20

40

60

80

100

120

140

Board Temperature (ºC)

G001

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

1

2

3

4

5

6

7

8

9

10 11 12 13 14 15

Output Current (A)

G001

0.5

0.6

0.7

0.8

0.9

1

1.1

−50

−25

0

25

50

75

100

125

150

Junction Temperature (ºC)

G001

CSD87381P

www.ti.com

SLPS405B – MARCH 2013 – REVISED MAY 2013

TYPICAL POWER BLOCK DEVICE CHARACTERISTICS

Figure 1. Power Loss vs Output Current

Figure 2. Normalized Power Loss vs Temperature

(1)

The Typical Power Block System Characteristic curves are based on measurements made on a PCB design with

dimensions of 4.0” (W) × 3.5” (L) x 0.062” (H) and 6 copper layers of 1 oz. copper thickness. See Application Section

for detailed explanation.

TEXT ADDED FOR SPACING

TEXT ADDED FOR SPACING

Figure 5. Normalized Power Loss vs Switching Frequency

Figure 6. Normalized Power Loss vs Input Voltage

Copyright © 2013, Texas Instruments Incorporated

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