TL1454CPW Datasheet, PDF (16/25 Pages) Texas Instruments – DUAL-CHANNEL PULSE-WIDTH-MODULATION (PWM) CONTROL CIRCUIT

TL1454, TL1454Y
DUAL-CHANNEL PULSE-WIDTH-MODULATION (PWM)
CONTROL CIRCUIT
SLVS086B – APRIL 1995 – REVISED NOVEMBER 1997
TYPICAL CHARACTERISTICS
ERROR AMPLIFIER MAXIMUM
PEAK-TO-PEAK OUTPUT VOLTAGE SWING
vs
FREQUENCY
2.5
VCC = 6 V
TA = 25°C
2
ERROR-AMPLIFIER MINIMUM OUTPUT
VOLTAGE SWING
vs
FREE-AIR TEMPERATURE
0.8
VCC = 6 V
No Load
Amplifier 1
0.7
1.5
0.6
1
0.5
0.5
0
1k
0.4
10 k 100 k
1M
f – Frequency – Hz
10 M
ÁÁÁÁ _{100 M}
0.3
– 50
– 25
0
25
50
75
TA – Free-Air Temperature – °C
100
Figure 18
Figure 19
ERROR AMPLIFIER OPEN-LOOP GAIN AND PHASE SHIFT
vs
FREQUENCY
80
– 0°
VCC = 6 V
TA = 25°C
60
Gain
– 36°
40
Phase Shift
20
– 72°
– 108°
0
– 144°
– 20
100
1k
10 k 100 k
1M
f – Frequency – Hz
Figure 20
– 180°
10 M
16
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