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TPS65145 Datasheet(PDF) 17 Page - Texas Instruments

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Part # TPS65145
Description  TRIPLE OUTPUT LCD SUPPLY WITH LINEAR REGULATOR AND POWER GOOD
PDF  31 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS65145 Datasheet(HTML) 17 Page - Texas Instruments

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CC = 1 nF
TPS65140, TPS65141
TPS65145
SLVS497C – SEPTEMBER 2003 – REVISED APRIL 2006
Figure 19. CC = 1 nF
Lastly, Rc needs to be selected. A good practice is to use a 50-kΩ potentiometer and adjust the potentiometer
for the best load transient where no oscillations should occur. These tests have to be done at the highest Vin and
highest load current because the converter stability is most critical under these conditions. Figure 20, Figure 21,
and Figure 22 show the fine tuning of the loop with Rc.
Figure 20. Overcompensated (Damped Oscillation), RC Is Too Large
Figure 21. Undercompensated (Loop Is Too Slow), RC Is Too Small
17
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