TL1451A Datasheet, PDF (15/29 Pages) Texas Instruments – DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS

70
VCC = 5 V
Rref = 150 Ω
60 _{Cref = 470 pF}
TA = 25°C
50
40
30
20
10
0
100
TL1451A
DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS
SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999
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
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