TL1451A_15 Datasheet, PDF (16/36 Pages) Texas Instruments – DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS

TL1451A
DUAL PULSEĆWIDTHĆMODULATION CONTROL CIRCUITS
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SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999
TYPICAL CHARACTERISTICS
70
VCC = 5 V
Rref = 15 Ω
60 _{Cref = 470 pF}
TA = 25°C
50
40
CLOSED-LOOP GAIN AND PHASE SHIFT
vs
FREQUENCY
Closed-Loop Gain
(Left Scale)
Phase Shift
(Right Scale)
30
20
10
0
100
1k
10 k
100 k
f – Frequency – Hz
Vref
39 kΩ
+
–
Cx
Rref
39 kΩ
Cref
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CX: 47 pF
470 pF
4700 pF
0°
–10°
–20°
–30°
–40°
–50°
–60°
–70°
–80°
–90°
1M
Test Circuit
Figure 19
16
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