Datasheet

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350
5 7.5 12.5 15 17.5 20.0
OutputRipplePeaktoPeak-mV
10
V -V
bat
V =28.8V,TPS61181
ISET=20 A,
DimmingFrequency=200Hz
O
m
L =4.7 Hm
L =10 Hm
0
20
40
60
80
100
120
140
0 10 20 30 40 50 60 70 80 90 100
PWMDimmingDutyCycle-%
I -OutputCurrent-mA
O
TPS61181
ISET=20 A,
DimmingFrequency=200Hz
m
0
20
40
60
80
100
120
140
0 10 20 30 40 50 60 70 80 90 100
PWMDimmingDutyCycle-%
I -OutputCurrent-mA
O
TPS61181
ISET=20 A,
DimmingFrequency=1kHz
m
TPS61180/1/2
www.ti.com SLVS801E –DECEMBER 2007–REVISED APRIL 2013
PWM DIMMING linearity 1kHz PWM DIMMING LINEARITY 200Hz
Figure 8. Figure 9.
PWM DIMMING OUTPUT RIPPLE C
O
=4.7μF
vs
INPUT VOLTAGE
Figure 10.
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