TPS92510EVM-011 Datasheet, PDF (8/22 Pages) Texas Instruments – 1.5-A, Constant-Current, Non-Synchronous Buck Converter for High-Brightness LEDs with Integrated Thermal Foldback

Performance Data and Typical Characteristic Curves
5 Performance Data and Typical Characteristic Curves
Figure 4 through Figure 20 present typical performance curves for TPS92510EVM-011.
5.1 Efficiency
100
95
90
85
80
75
70
65
f_SW = 350 kHz
I_OUT = 100 mA
I_OUT = 200 mA
I_OUT = 300 mA
I_OUT = 500 mA
I_OUT = 700 mA
60
3
4
5
6
7
8
9
10
Number of LEDs (Load)
G000
Figure 4. Efficiency vs. Number of LEDs (I_OUT)
5.2 Input Voltage Ripple
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Figure 5. Input Voltage Ripple, V_IN = 43 Vdc
Figure 6. Input Voltage Ripple, V_IN = 48 Vdc
8
1.5-A, Constant-Current, Non-Synchronous Buck Converter for High-
Brightness LEDs with Integrated Thermal Foldback
Copyright © 2012, Texas Instruments Incorporated
SLUU977 – JULY 2012
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