CM6802A_12 Datasheet, PDF (18/25 Pages) Champion Microelectronic Corp. – EPA/80++ ZVS-Like PFC/PWM COMBO CONTROLLER

CM6802A/B/AH/BH (Dynamic Soft PFC/Green PWM)
http://www.championmicro.com.tw EPA/80++ ZVS-Like PFC/PWM COMBO CONTROLLER
Design for High Efficient Power Supply at both Full Load and Light Load
2.5V
VFB
15
VCC
IAC
2
4 ^VRMS
3 ^ISENSE
7 ^RAMP1
16 _VEAO
GMv
+
.
-
GAIN
MODULATOR
PFC
1 _IEAO
Rmul
GMi
+
.
-
PFC CMP
+
-
Rmul
PFC RAMP
VFB
2.85V
PFC OVP
+
.
-
PFC Tri-Fault
0.5V
+
VFB
-
PFC ILIMIT
-1.0V
+
ISENSE
-
0.3V
VEAO
Green PFC
+
-
PFCCLK
.
13 _VCC
16.5V
Zener
7.5V
REFERENCE
VREF
14
S
Q
R
Q
S
Q
R
Q
VCC
MPPFC
MNPFC
PFC OUT
12
17V
ZENER
Figure 1. PFC Section Block Diagram
2012/05/10 Rev. 1.5
Champion Microelectronic Corporation
18