TDA4863-2 Datasheet, PDF (8/27 Pages) Infineon Technologies AG – Power Factor Controller IC for High Power Factor and Low THD

1.5
Block Diagram
TDA4863-2
Overview
VCC
GND
DETIN
20V
10V
12.5V
+
UVLO
-
5V
-
Reference
Voltage
Vref
Clamp
Current
0.5V
+
+
0.2V
-
Enable
+
2.2V
2.5V
+
Voltage
Amp
-
-
Inhibit
+
Multiplier
5.4V
OVR
1.0V
1.5V
Detector
-
Inhibit
time delay
t_dVA=2us
LEB
multout
1V
t_dsd=70ns
+
+
Current
Comp
-
5p
40k
VSENSE
VAOUT
MULTIN ISENSE
t_res=150us
Restart
Timer
RS
Flip-Flop
Gate
Drive
-
1V
+
uvlo
active
shut down
3.5V
-
Vref
+
GTDRV
Figure 3 Internal Bolck Diagram
Data Sheet
8
V1.2, 2004-02