17/26

L6910G

Figure 18. PCB and Components Layouts

7.1 Compact Demo Board Performances

Figures 19, 20 show the measured efficiency versus load current for different values of output voltage. The mea-

sure has been done at 5V and 12V input. Output voltage has been changed modifying the value of R1 in the

demo board as reported in the part list.

Figure 19. Efficiency vs. Output Current

Figure 20. Efficiency vs. Output Current

Component Side

Solder Side

70

75

80

85

90

95

100

1

234

56

78

Vin=Vcc=5V

Fsw=200KHz

Vo=1.2V

Vo=1.5V

Vo=1.8V

Vo=3.3V

Vo=2.5V

Output Current (A)

70

75

80

85

90

95

100

1

234

56

78

Vin=Vcc=5V

Fsw=200KHz

Vo=1.2V

Vo=1.5V

Vo=1.8V

Vo=3.3V

Vo=2.5V

Output Current (A)

70

75

80

85

90

95

12

34

56

7

8

70

75

80

85

90

95

12

34

56

7

8

Vo=1.2V

Vo=1.5V

Vo=1.8V

Vo=2.5V

Vo=3.3V

Vo=5V

Output Current (A)

Vin=Vcc=12V

Fsw=200KHz

Vo=1.2V

Vo=1.5V

Vo=1.8V

Vo=2.5V

Vo=3.3V

Vo=5V

Output Current (A)

Vin=Vcc=12V

Fsw=200KHz