FAN6754A Fairchild Semiconductor, FAN6754A Datasheet - Page 8

• Manufacturer Part Number: FAN6754A
• Description: The highly integrated FAN6754A PWM controller provides several features to enhance the performance of flyback converters
• Manufacturer: Fairchild Semiconductor

© 2011 Fairchild Semiconductor Corporation
FAN6754A • Rev. 1.0.3
Electrical Characteristics
V
Current-Sense Section
GATE Section
RT Section
Note:
4.
Symbol
I
DCY
t
GATE-SINK
DD
V
V
V
ON-SSCP
t
SOURCE
V
V
V
V
t
t
V
D-SSCP
I
CLAMP
D-OTP1
D-OTP2
GATE-H
GATE-L
GATE-
t
RTTH1
RTTH2
Limit-H
GATE-
=15V and T
Limit-L
t
SSCP
t
I
LEB
PD
SS
RT
t
t
Guaranteed by design.
r
f
MAX
Delay to Output
Leading-Edge Blanking Time
Current Limit at Low Line (V
Current Limit at High Line (V
Threshold Voltage for SENSE Short-Circuit Protection
On Time for V
Delay for SENSE Short-Circuit Protection V
Soft-Start Time
Maximum Duty Cycle
Gate Low Voltage
Gate High Voltage
Gate Sink Current
Gate Source Current
Gate Rising Time
Gate Falling Time
Gate Output Clamping Voltage
Output Current from RT Pin
Over-Temperature Protection Threshold
Voltage
Over-Temperature Latch-Off Debounce
A
=25°C unless otherwise noted.
SSCP
Parameter
(4)
Checking
(4)
(Continued)
AC
AC
=86V)
=259V)
V
to HV
V
to HV
Startup Time
V
V
V
V
V
V
V
0.7V ＜ V
12ms Latch Off
V
Latch Off
V
FB > V
V
FB < V
V
V
DC
DC
SENSE
DD
DD
DD
DD
DD
DD
DD
RT
RTTH2
RTTH2
RT
RT
< V
< V
8
=122V, Series R=200kΩ
=366V, Series R=200kΩ
=15V, I
=12V, I
=15V
=15V, GATE=6V
=15V, C
=15V, C
=22V
＜ 0.7V, After 100µs
<0.05V
＜ V
FB-N
＜ V
FB-G
RTTH2
RTTH2
Conditions
RT
O
O
RT
RT
, FB > V
, FB < V
L
L
=50mA
=50mA
＜ 1.05V, after
=1nF
=1nF
＜ V
＜ V
RTTH1
RTTH1
FB-N
FB-G
1.000
Min.
0.43
0.36
0.03
0.65
230
300
250
110
320
4.0
60
86
92
14
40
7
8
9
1.035
Typ.
0.46
0.39
0.05
0.70
100
280
120
100
100
185
605
4.4
89
50
13
16
51
8
Max.
1.070
0.49
0.42
0.07
0.75
250
330
180
108
260
890
4.8
1.5
www.fairchildsemi.com
92
17
18
62
9
Unit
mA
mA
ms
µA
ms
ns
ns
µs
µs
ns
ns
µs
%
s
V
V
V
V
V
V
V