FAN6791 Fairchild Semiconductor, FAN6791 Datasheet - Page 11

• Manufacturer Part Number: FAN6791
• Description: The highly integrated FAN6791/3 dual PWM combination controller provides several features to enhance the performance of converters
• Manufacturer: Fairchild Semiconductor

© 2008 Fairchild Semiconductor Corporation
FAN6791 / FAN6793 • Rev. 1.0.3
Typical Characteristics
Figure 5. Startup Current I
20.0
19.0
18.0
17.0
16.0
15.0
14.0
13.0
12.0
11.0
10.0
16.2
16.1
16.0
15.9
15.8
15.7
15.6
15.5
47.50
47.45
47.40
47.35
47.30
47.25
47.20
47.15
47.10
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
Figure 11. OPWM Maximum Duty Cycle
-40℃ -25℃ -10℃
-40℃ -25℃ -10℃
-40℃ -25℃ -10℃
-40℃ -25℃ -10℃
Figure 9. V
Figure 7. I
5℃
5℃
5℃
5℃
DD-OP2
DD-ON
vs. Temperature
20℃
20℃ 35℃ 50℃ 65℃ 80℃
20℃
20℃ 35℃
35℃ 50℃
35℃ 50℃
vs. Temperature
vs. Temperature
DD-ST
50℃ 65℃ 80℃ 95℃ 110℃ 125℃
65℃
65℃
vs. Temperature
80℃
80℃
95℃ 110℃ 125℃
95℃ 110℃ 125℃
95℃ 110℃ 125℃
11
10.0
2.5
2.0
1.5
1.0
0.5
0.0
10.2
10.1
10.0
64.4
64.3
64.2
64.1
64.0
63.9
63.8
63.7
63.6
63.5
63.4
63.3
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
9.9
9.8
9.7
9.6
9.5
9.4
9.3
9.2
-40℃ -25℃ -10℃
-40℃ -25℃ -10℃
-40℃ -25℃ -10℃
-40℃ -25℃ -10℃
Figure 12. OFYB Maximum Duty Cycle
Figure 10. V
Figure 6. I
Figure 8. I
5℃
5℃
5℃
5℃
DD-OP1
D-MAX
DD-OFF
20℃
vs. Temperature
20℃
20℃
20℃
35℃
vs. Temperature
35℃ 50℃
35℃ 50℃
35℃ 50℃
vs. Temperature
vs. Temperature
50℃
65℃
65℃
65℃
65℃
80℃
80℃
80℃
80℃
95℃ 110℃ 125℃
95℃ 110℃ 125℃
95℃ 110℃ 125℃
95℃ 110℃ 125℃
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