TL594 datasheet(6/12 Pages) ONSEMI | Precision Switchmode Pulse Width Modulation Control Circuit

6 page

TL594

http://onsemi.com

Figure 5. Percent Deadtime versus

Oscillator Frequency

Figure 6. Percent Duty Cycle versus

Deadtime Control Voltage

Figure 7. Emitter−Follower Configuration

Output Saturation Voltage versus

Emitter Current

8.0

6.0

4.0

2.0

500 k

1.0 k

10 k

100 k

500 k

fosc, OSCILLATOR FREQUENCY (Hz)

CT = 0.001 mF

0.01

1.0

2.0

3.0

3.5

VDT, DEADTIME CONTROL VOLTAGE (IV)

VCC = 15 V

VOC = Vref

1.CT = 0.01 mF

1. RT = 10 kW

2.CT = 0.001 mF

1. RT = 30 kW

Figure 8. Common−Emitter Configuration

Output Saturation Voltage versus

Collector Current

1.9

1.8

1.7

1.6

1.5

1.4

1.3

1.2

1.1

100

200

300

400

IE, EMITTER CURRENT (mA)

100

200

300

400

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

IC, COLLECTOR CURRENT (mA)

Figure 9. Standby Supply Current

versus Supply Voltage

9.8

8.0

7.0

6.0

5.0

4.0

3.0

2.0

1.0

5.0

VCC, SUPPLY VOLTAGE (V)

Figure 10. Undervoltage Lockout Thresholds

versus Reference Load Current

6.0

5.5

5.0

4.5

4.0

5.0

IL, REFERENCE LOAD CURRENT (mA)

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