TL1454A_14 Datasheet, PDF (16/25 Pages) Texas Instruments – DUAL-CHANNEL PULSE-WIDTH-MODULATION (PWM) CONTROL CIRCUIT

TL1454A, TL1454AY
DUALĆCHANNEL PULSEĆWIDTHĆMODULATION (PWM)
CONTROL CIRCUIT
SLVS423 A− MAY 2002 − REVISED SEPTEMBER 2002
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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