TL1451A-Q1 Datasheet, PDF (13/24 Pages) Texas Instruments – DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS

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70
VCC = 5 V
Rref = 150 Ω
60 _{Cref = 470 pF}
TA = 25°C
50
40
30
20
10
0
100
TL1451A-Q1
DUAL PULSEĆWIDTHĆMODULATION CONTROL CIRCUITS
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SGLS304A − JUNE 2005 − REVISED JUNE 2008
TYPICAL CHARACTERISTICS
CLOSED-LOOP GAIN AND PHASE SHIFT
vs
FREQUENCY
Closed-Loop Gain
(Left Scale)
1k
10 k
f − Frequency − Hz
Vref
39 kΩ
+
−
Cx
Rref
39 kΩ
Cref
CX: 47 pF
470 pF
4700 pF
Phase Shift
(Right Scale)
100 k
0°
− 10°
− 20°
− 30°
− 40°
− 50°
− 60°
− 70°
− 80°
− 90°
1M
Test Circuit
Figure 18
www.ti.com
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