FAN6754B Fairchild Semiconductor, FAN6754B Datasheet - Page 2

• Manufacturer Part Number: FAN6754B
• Description: The highly integrated FAN6754A PWM controller provides several features to enhance the performance of flyback converters
• Manufacturer: Fairchild Semiconductor

© 2011 Fairchild Semiconductor Corporation
FAN6754B • Rev.1.0.0
Application Diagram
Internal Block Diagram
VDD
RT
7
5
Startup
HV
I
RT
HV
4
1.05V
0.7V
V
DD-OVP
17V/10V
Line Voltage
Sample Circuit
UVLO
Debounce
Counter
Counter
t
t
D-OTP1
D-OTP2
Figure 2. Functional Block Diagram
Brownout Protection
Figure 1. Typical Application
V
OVP
Limit
Internal
BIAS
Adjustment
OSC
Green
Mode
OTP
OLP for ML
OVP
OTP
GND
2
1
OLP
Protection
S
R
Latch
Q
Delay
Current Limit
OLP
Comparator
Comparator
Comparator
Soft-Start
PWM
Comparator
Protection
Re-Start
OLP
OLP for MR
Compensation
Soft-Start
V
R
Slope
4.6V
Driver
Limit
Soft
3R
NC
3
Blanking
Circuit
5V
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8
6
2
SENSE
GATE
FB