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CM6800T
(Turbo-Speed PFC+Green PWM)
http://www.championmicro.com.tw
EPA/85+
PFC+PWM COMBO CONTROLLER
Design for High Efficient Power Supply
2010/08/03
Rev. 1.2
Champion Microelectronic Corporation
18
2.5V
ISENSE
3
RAMP1
7
-1.0V
PFC OVP
+
-
.
+
-
Green PFC
GMi
+
-
.
S
R
Q
Q
0.3V
+
-
PFC Tri-Fault
IEAO
1
PFCCLK
.
ZENER
17V
Rmul
GMv
-
+
.
VFB
15
MODULATOR
GAIN
PFC
2.75V
PFC OUT
12
VCC
13
+
-
PFC CMP
Zener
16.5V
VFB
VEAO
16
VCC
VFB
VEAO
ISENSE
S
R
Q
Q
REFERENCE
7.5V
+
-
PFC ILIMIT
MNPFC
VREF
14
IAC
2
VRMS
4
0.5V
MPPFC
Rmul
PFC RAMP
Figure 1. PFC Section Block Diagram