TPS61196
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SLVSBG1C –OCTOBER 2012–REVISED FEBRUARY 2013
TYPICAL CHARACTERISTICS
Table 1. TABLE OF GRAPHS
Figure 1 as test circuit
TITLE
TEST CONDITIONS
FIGURE
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
Figure 13
Figure 14
Figure 15
Figure 16
Figure 17
Figure 18
Figure 19
Figure 20
Figure 21
Efficiency (20LEDs)
20 LEDs(VOUT = 60V), IOUT = 0.78A, 200Hz Dimming Frequency
16 LEDs(VOUT = 50V), IOUT = 0.78A, 200Hz Dimming Frequency
20 LEDs(VOUT = 60V), VIN = 24V
Efficiency (16LEDs)
Dimming Linearity
Dimming Linearity at Low Dimming Duty Cycle
DC Load Efficiency
20 LEDs(VOUT = 60V), VIN = 24V
fSW = 200 kHz
Switching Frequency Setting
VIN = 24V
Recommended Minimum Headroom Voltage
Boost Switching Waveform
VIN = 24V, VOUT = 74V, IOUT = 0.78A
Startup Waveform (1% Dimming)
Startup Waveform (100% Dimming)
Dimming Waveform (0.1% Dimming)
Dimming Waveform (2% Dimming)
Shutdown Waveform (1% Dimming)
Shutdown Waveform (100% Dimming)
LED Open Protection (1% Dimming)
LED Open Protection (100% Dimming)
LED Short Protection (1% Dimming)
LED Short Protection (100% Dimming)
IFB Short to Ground Protection (1% Dimming)
IFB Short to Ground Protection (100% Dimming)
200Hz Dimming Frequency, 1% Dimming Duty Cycle
200Hz Dimming Frequency, 100% Dimming Duty Cycle
200Hz Dimming Frequency, 0.1% Dimming Duty Cycle
200Hz Dimming Frequency, 2% Dimming Duty Cycle
200Hz Dimming Frequency, 1% Dimming Duty Cycle
200Hz Dimming Frequency, 100% Dimming Duty Cycle
200Hz Dimming Frequency, 1% Dimming Duty Cycle
200Hz Dimming Frequency, 100% Dimming Duty Cycle
200Hz Dimming Frequency, 1% Dimming Duty Cycle
200Hz Dimming Frequency, 100% Dimming Duty Cycle
200Hz Dimming Frequency, 1% Dimming Duty Cycle
200Hz Dimming Frequency, 100% Dimming Duty Cycle
EFFICIENCY (20LEDs)
EFFICIENCY (16LEDs)
1
1
0.95
0.9
0.95
0.9
0.85
0.8
0.85
0.8
0.75
0.75
20 LEDs (VOUT = 60 V)
200 Hz Dimming Frequency
16 LEDs (VOUT = 50 V)
200 Hz Dimming Frequency
0.7
0.65
0.6
0.7
0.65
0.6
VIN = 12 V
VIN = 24 V
VIN = 12 V
VIN = 24 V
0.55
0.5
0.55
0.5
0
10
20
30
PWM Dimming Duty Cycle (%)
40
50
60
70
80
90 100
0
10
20
30
PWM Dimming Duty Cycle (%)
40
50
60
70
80
90 100
G001
G002
Figure 2.
Figure 3.
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