SG6846G Fairchild Semiconductor, SG6846G Datasheet - Page 2

• Manufacturer Part Number: SG6846G
• Description: A highly integrated PWM controller, SG6846G provides several features to enhance the performance of flyback converters
• Manufacturer: Fairchild Semiconductor

© 2008 Fairchild Semiconductor Corporation
SG6846G • Rev. 1.0.2
Typical Application
Block Diagram
VDD 7
VIN
RT
3
5
AC input
N
L
0.9V/0.7V
I
RT
Filter
EMI
1.05V
3
4
2
V
23.6V
16.5V/10.5V
FB
VIN
RI
DD
-TH-G
UVLO
SG6846G
VDD
GND
7
1
Over Power Compensation
Latch
SENSE
GATE
1.18-0.08
RT
Figure 1. Typical Application
+
Debounce
8
6
5
Figure 2. Block Diagram
Internal
BIAS
X
V
+
IN
OCP
Delay
GND
2
1
Q
R
S
OSC
Compensation
1.15V
Slope
1R
+
+
1R
Green
Mode
Soft
Driver
1R
Ri
4
3R
Blanking
Circuit
VDD
R
6V
VO-
VO+
8
2
6
www.fairchildsemi.com
SENSE
GATE
FB