?2010 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN6920MR " Rev. 1.0.8
14
Typical Performance Characteristics (Continued)
2 2 . 0
2 3 . 0
2 4 . 0
2 5 . 0
2 6 . 0
2 7 . 0
2 8 . 0
- 4 0- 2 5- 1 0 5 2 0 3 5 5 0 6 5 8 0 9 51 1 01 2 5
e m p e r a t u r e (
o
C )
0 . 7 5
0 . 8 0
0 . 8 5
0 . 9 0
0 . 9 5
- 4 0- 2 5- 1 0 5 2 0 3 5 5 0 6 5 8 0 9 51 1 0 1 2 5
e m p e r a t u r e (
o
C )
Figure 13. PFC Maximum On-Time
Figure 14. PFC Peak Current Limit Voltage
1 6 . 0
1 6 . 5
1 7 . 0
1 7 . 5
1 8 . 0
1 8 . 5
1 9 . 0
- 4 0- 2 5- 1 0 5 2 0 3 5 5 0 6 5 8 0 9 51 1 01 2 5
e m p e r a t u r e (
o
C )
3 8
3 9
4 0
4 1
4 2
4 3
4 4
4 5
- 4 0 - 3 0 - 1 5
0
2 5
5 0
7 5 8 5 1 0 0 1 2 5
mr r ?/DIV>
Figure 15. PWM Gate Output Clamping Voltage
Figure 16. PWM Maximum On-Time
1 . 9
2 . 0
2 . 1
2 . 2
2 . 3
- 4 0- 2 5- 1 0 5 2 0 3 5 5 0 6 5 8 0 9 51 1 01 2 5
e m e r a t u r e
o
C
1 . 0
1 . 1
1 . 2
1 . 3
1 . 4
- 4 0- 2 5- 1 0 5 2 0 3 5 5 0 6 5 8 0 9 51 1 01 2 5
e m e r a t u r e
o
C
Figure 17. Beginning of Green-On Mode at V
FB
Figure 18. Beginning of Green-Off Mode at V
FB
4 . 2
4 . 3
4 . 4
4 . 5
4 . 6
4 . 7
4 . 8
4 . 9
5
- 4 0 - 3 0 - 1 5
0
2 5 5 0 7 5 8 5 1 0 0 1 2 5
e m p e r a t u r e ?C
1 8
1 8 . 5
1 9
1 9 . 5
2 0
2 0 . 5
2 1
2 1 . 5
- 4 0 - 3 0 - 1 5
0
2 5 5 0 7 5 8 5 1 0 0 1 2 5
e m p e r a t u r e ?C
Fi r 1 . PWM Minim m ff-Tim f r V > V
Fi r 2 . PWM Minim m ff-Tim f r V =V