TL1451A-Q1 Datasheet, PDF (16/24 Pages) Texas Instruments – DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS

TL1451A-Q1
DUAL PULSEĆWIDTHĆMODULATION CONTROL CIRCUITS
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SGLS304A − JUNE 2005 − REVISED JUNE 2008
TYPICAL CHARACTERISTICS
70
VCC = 5 V
Cref = 470 pF
60 _{TA = 25°C}
CLOSED-LOOP GAIN AND PHASE SHIFT
vs
FREQUENCY
50
40
Closed-Loop Gain
(Left Scale)
30
Phase Shift
(Right Scale)
20
10
0
100
1k
10 k
f − Frequency − Hz
Vref
+
−
39 kΩ
39 kΩ
Cref
100 k
Test Circuit
Figure 21
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0°
− 10°
− 20°
− 30°
− 40°
− 50°
− 60°
− 70°
− 80°
− 90°
1M
16
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