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TPS61197 Folha de dados(PDF) 7 Page - Texas Instruments

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Nome de Peças TPS61197
Descrição Electrónicos  Single-String WLED Driver for LCD TV
PDF  22 Pages
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Fabricante Electrônico  TI [Texas Instruments]
Página de início  http://www.ti.com
Logo TI - Texas Instruments

TPS61197 Folha de dados(HTML) 7 Page - Texas Instruments

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PWM Dimming Duty Cycle (%)
100Hz Dimming
1kHz Dimming
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PWM Dimming Duty Cycle (%)
1kHz Dimming
100Hz Dimming
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PWM Dimming Duty Cycle (%)
VIN = 12V
VIN = 24V
24 LEDS (VOUT = 80V)
100Hz Dimming Frequency
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PWM Dimming Duty Cycle (%)
VIN = 48V
VIN = 24V
38 LEDs (VOUT = 130V)
100Hz Dimming Frequency
TPS61197
www.ti.com
SLVSC25 – JULY 2013
TYPICAL CHARACTERISTICS
TABLE OF GRAPHS
Figure 1 as test circuit
TITLE
TEST CONDITIONS
FIGURE
Dimming Efficiency with 24 LEDs
24 LEDs (VOUT = 80V), IOUT = 300mA, 100Hz Dimming Frequency
Figure 2
Dimming Efficiency with 38 LEDs
38 LEDs (VOUT = 130V), IOUT = 300mA, 100Hz Dimming Frequency
Figure 3
Dimming Linearity
24 LEDs (VOUT = 80V), VIN = 24V
Figure 4
Dimming Linearity at Small Dimming Duty
24 LEDs (VOUT = 80V), VIN = 24V
Figure 5
Cycle
DC Load Efficiency
fSW = 130kHz
Figure 6
Switching Frequency Setting
VIN = 24V
Figure 7
Boost Switching Waveform
VIN = 24V, VOUT = 80V, IOUT = 300mA
Figure 8
Dimming Waveform (2% Dimming)
VIN = 24V, VOUT = 80V, IOUT = 300mA, 100Hz Dimming Frequency
Figure 9
Startup Waveform (1% Dimming)
100Hz Dimming Frequency, 1% Dimming Duty Cycle
Figure 10
Startup Waveform (100% Dimming)
100Hz Dimming Frequency, 100% Dimming Duty Cycle
Figure 11
Shutdown Waveform (1% Dimming)
100Hz Dimming Frequency, 1% Dimming Dutyc Cycle
Figure 12
Shutdown Waveform (100% Dimming)
100Hz Dimming Frequency, 100% Dimming Duty Cycle
Figure 13
LED Open Protection (1% Dimming)
100Hz Dimming Frequency, 1% Dimming Duty Cycle
Figure 14
LED Open Protection (100% Dimming)
100Hz Dimming Frequency, 100% Dimming Duty Cycle
Figure 15
LED String Short Protection (1% Dimming)
100Hz Dimming Frequency, 1% Dimming Duty Cycle
Figure 16
LED String Short Protection (100% Dimming) 100Hz Dimming Frequency, 100% Dimming Duty Cycle
Figure 17
EFFICIENCY (24 LEDs)
EFFICIENCY (38 LEDs)
Figure 2.
Figure 3.
DIMMING LINEARITY
DIMMING LINEARITY AT LOW DIMMING DUTY CYCLE
Figure 4.
Figure 5.
Copyright © 2013, Texas Instruments Incorporated
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