Datasheet

0 10 20 30 40 50 60 70 80 90 100
PWM Dimming Duty Cycle - %
50
55
60
65
70
75
80
85
90
95
100
Efficiency - %
V = 19 V
BAT
V = 10.8 V
BAT
V = 5 V
BAT
V = 25.5 V - TPS61181A,
ISET = 20 A,
Dimming Frequency = 1 kHz
O
m
50
55
60
65
70
75
80
85
90
95
100
Efficiency - %
0 10 20 30 40 50 60 70 80 90 100
PWM Dimming Duty Cycle - %
V = 28.6 V - TPS61181A,
ISET = 20 A,
Dimming Frequency = 1 kHz
O
m
V = 19 V
BAT
V = 10.8 V
BAT
V = 5 V
BAT
50
55
60
65
70
75
80
85
90
95
100
Efficiency - %
0 10 20 30 40 50 60 70 80 90 100
PWM Dimming Duty Cycle - %
V = 19 V
BAT
V = 10.8 V
BAT
V = 5 V
BAT
V = 31.7 V - TPS61181A,
ISET = 20 A,
Dimming Frequency = 1 kHz
O
m
50
55
60
65
70
75
80
85
90
95
100
Efficiency - %
0 10 20 30 40 50 60 70 80 90 100
PWM Dimming Duty Cycle - %
V = 34.8 V - TPS61181A,
ISET = 20 A,
Dimming Frequency = 1 kHz
O
m
V = 10.8 V
BAT
V = 5 V
BAT
V = 19 V
BAT
TPS61181A
www.ti.com SLVSAN6A –FEBRUARY 2011– REVISED MARCH 2011
EFFICIENCY EFFICIENCY
vs vs
DIMMING DUTY CYCLE DIMMING DUTY CYCLE
Figure 3. Figure 4.
EFFICIENCY EFFICIENCY
vs vs
DIMMING DUTY CYCLE DIMMING DUTY CYCLE
Figure 5. Figure 6.
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