FAN6747 Datasheet, PDF (2/15 Pages) Fairchild Semiconductor – Highly Integrated Green-Mode PWM Controller

Application Diagram
Figure 1. Typical Application
Internal Block Diagram
HV
4
HV
Start-up
VDD 7
IRT
RT ₅
Line Voltage
Sample Circuit
Brownout Protection
SCP
OVP
OTP
OCP
Latch
Protection
Vlimit Adjustment
NC
3
Soft
Driver
8 GATE
UVLO
16.5V/9V
Internal
BIAS
QS
R
OSC
Green
Mode
PWM
Comparator
VDD-OVP
Debounce OVP
VDD-SCP
SCP
1.05V
0.7V
Debounce1
Debounce2
Soft-start
1R
Circuit
Slope
Compensation
Current Limit
Comparator
OTP
OCP
SCP
Delay
OCP
Delay
OCP
Comparator
OLP
Comparator
4.6V
5.2V
3R
2 FB
Blanking
Circuit
6 SENSE
GND
Figure 2. Functional Block Diagram
© 2009 Fairchild Semiconductor Corporation
FAN6747 • Rev. 1.0.1
2
www.fairchildsemi.com