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TPS92510EVM-011 Fiches technique(PDF) 3 Page - Texas Instruments

No de pièce TPS92510EVM-011
Description  1.5-A, Constant-Current, Non-Synchronous Buck Converter for High-Brightness LEDs with Integrated Thermal Foldback
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TPS92510EVM-011 Fiches technique(HTML) 3 Page - Texas Instruments

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List of Figures
1
4-Phase Clock Generator
.................................................................................................. 5
2
4-Phase Clock Waveforms
................................................................................................ 5
3
TPS92510EVM-011 Application Schematic
............................................................................. 7
4
Efficiency vs. Number of LEDs (I
OUT) .....................................................................................
8
5
Input Voltage Ripple, V
IN = 43 Vdc........................................................................................
8
6
Input Voltage Ripple, V
IN = 48 Vdc........................................................................................
8
7
Input Voltage Ripple, V
IN = 53 Vdc........................................................................................
8
8
Input Voltage Ripple and Inductor Current
.............................................................................. 9
9
Input Voltage Ripple and LED Current
................................................................................... 9
10
Loop Response Gain and Phase
........................................................................................ 10
11
Start-Up Response Relative to Enable
................................................................................. 10
12
External Clock Synchronization, f
SW = 250 kHz .......................................................................
11
13
External Clock Synchronization, f
SW = 500 kHz .......................................................................
11
14
External Clock Synchronization, f
SW = 1 MHz ..........................................................................
11
15
PWM Dimming, f
PWM = 200 Hz, Duty Cycle = 5% .....................................................................
12
16
PWM Dimming, f
PWM = 200 Hz, Duty Cycle = 95% ....................................................................
12
17
Thermal Foldback
......................................................................................................... 12
18
Thermal Foldback
........................................................................................................ 12
19
Error Amplifier S/H, Duty Cycle = 90%
................................................................................ 13
20
Error Amplifier S/H, Duty Cycle = 10%
................................................................................ 13
21
Top Thermal Performance
............................................................................................... 13
22
Bottom Thermal Performance
........................................................................................... 13
23
TPS92510EVM-011 Top Layer Assembly Drawing
.................................................................. 14
24
TPS92510EVM-011 Bottom Copper (Bottom View)
.................................................................. 14
25
TPS92510EVM-011 Top Copper (Top View)
.......................................................................... 15
3
SLUU977 – JULY 2012
List of Figures
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