CM6802A CHAMP [Champion Microelectronic Corp.], CM6802A Datasheet - Page 18

• Manufacturer Part Number: CM6802A
• Description: EPA/80++ ZVS-Like PFC/PWM COMBO CONTROLLER
• Manufacturer: CHAMP [Champion Microelectronic Corp.]

http://www.championmicro.com.tw
2009/11/02
15
2
3
7
4
VFB
IAC
VRMS
ISENSE
RAMP1
VCC
2.5V
+
-
Rev. 1.4
GMv
MODULATOR
.
GAIN
16
VEAO
PFC
Design for High Efficient Power Supply at both Full Load and Light Load
PFCCLK
Rmul
Rmul
+
-
GMi
CM6802A/B/AH/BH
Champion Microelectronic Corporation
.
PFC RAMP
.
1
Figure 1. PFC Section Block Diagram
IEAO
EPA/80++ ZVS-Like PFC/PWM COMBO CONTROLLER
PFC CMP
+
-
ISENSE
VEAO
-1.0V
0.5V
VFB
0.3V
2.85V
VFB
PFC Tri-Fault
PFC ILIMIT
Green PFC
+
-
+
-
+
-
+
-
PFC OVP
.
(Dynamic Soft PFC/Green PWM)
16.5V
Zener
S
R
S
R
Q
Q
Q
Q
REFERENCE
7.5V
13
VCC
MPPFC
MNPFC
VCC
PFC OUT
ZENER
VREF
17V
18
14
12