FAN6747 Fairchild Semiconductor, FAN6747 Datasheet - Page 2

• Manufacturer Part Number: FAN6747
• Description: The highly integrated FAN6747 PWM controller provides several features to enhance the performance of flyback converters
• Manufacturer: Fairchild Semiconductor

© 2010 Fairchild Semiconductor Corporation
FAN6747 • Rev. 1.0.3
Application Diagram
Internal Block Diagram
VDD
RT
7
5
Startup
HV
I
RT
HV
4
1.05V
0.7V
V
V
DD-OVP
DD-SCP
17V/10V
UVLO
Line Voltage
Sample Circuit
Debounce1
Debounce2
Debounce
Brownout Protection
Figure 2. Functional Block Diagram
V
limit
SCP
Figure 1. Typical Application
OVP
Adjustment
Internal
BIAS
OTP
OCP
SCP
OVP
OCP
GND
2
Soft-Start
Circuit
Delay
Delay
Q
SCP
OCP
Protection
Restart
S
R
Auto
Current Limit
Comparator
Comparator
Comparator
Comparator
OSC
PWM
OCP
OLP
Protection
Latch
Compensation
Slope
OTP
Green
Mode
4.6V
Driver
Soft
1R
NC
3
3R
Blanking
Circuit
5V
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8
2
6
GATE
SENSE
FB