Texas Instruments TPS61150A-150 Evaluation Board TPS61150AEVM-150 TPS61150AEVM-150 TPS61150AEVM-150 Datenbogen
Produktcode
TPS61150AEVM-150
www.ti.com
700
800
900
1000
1100
1200
0
10
20
30
40
50
WLED Current - mA
V = 3.6V
WLED1 Voltage = 15V
WLED2 Voltage = 15V
WLED2 Voltage = 15V
I
KV
alue
WLED1
WLED2
50
60
70
80
90
0
10
20
30
40
60
50
I
- Total Output Current - mA
O
Efficiency-%
WLED1 Voltage = 15V
WLED2 Voltage = 15V
WLED2 Voltage = 15V
V = 3.3V
I
V = 4.2V
I
V = 3.6V
I
ISEL2
5V/div , DC
WLED Current
20mA/div, DC
IOUT
1V/div , DC
15V Offset
SW
10V/div , DC
t - Time - 20 s/div
m
0
5
10
15
20
25
0
20
40
60
80
100
PWM Duty cycle - %
WLEDcurrent-mA
f = 20kHz
f = 30kHz
SLVS706 – OCTOBER 2006
BOTH ON EFFICIENCY
K VALUE
vs
vs
TOTAL OUTPUT CURRENT
WLED CURRENT
Figure 7.
Figure 8.
SINGLE OUTPUT WLED PWM
WLED BRIGHTNESS DIMMING LINEARITY
BRIGHTNESS DIMMING
Figure 9.
Figure 10.
8