TL494 Datasheet, PDF (6/12 Pages) Motorola, Inc – SWITCHMODE PULSE WIDTH MODULATION CONTROL CIRCUIT

TL494
120
110
100
90
80
70
60
50
40
30
20
10
0
1.0
Figure 4. Open Loop Voltage Gain and
Phase versus Frequency
AVOL
VCC = 15 V
∆VO = 3.0 V
RL = 2.0 kΩ
0
20
40
60
φ ⁸⁰
100
120
140
160
180
10
100 1.0 k 10 k 100 k 1.0 M
f, FREQUENCY (Hz)
Figure 5. Percent Deadtime versus
Oscillator Frequency
20
18
16
14
CT = 0.001 µF
12
10
8.0
6.0
4.0
0.001 µF
2.0
0
500 k 1.0 k
10 k
100 k
fosc, OSCILLATOR FREQUENCY (Hz)
500 k
Figure 6. Percent Duty Cycle versus
Deadtime Control Voltage
50
40
1
2
30
20
VCC = 15 V
VOC = Vref
1. CT = 0.01 µF
2. RT = 10 kΩ
2. CT = 0.001 µF
2. RT = 30 kΩ
10
0
0
1.0
2.0
3.0 3.5
VDT, DEADTIME CONTROL VOLTAGE (IV)
Figure 8. Common–Emitter Configuration
Output Saturation Voltage versus
Collector Current
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0
100
200
300
400
IC, COLLECTOR CURRENT (mA)
Figure 7. Emitter–Follower Configuration
Output Saturation Voltage versus
Emitter Current
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
0
100
200
300
400
IE, EMITTER CURRENT (mA)
Figure 9. Standby Supply Current
versus Supply Voltage
10
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0
0 5.0 10 15 20 25 30 35 40
VCC, SUPPLY VOLTAGE (V)
6
MOTOROLA ANALOG IC DEVICE DATA