CM6800 Champion Microelectronic Corp., CM6800 Datasheet - Page 3

• Manufacturer Part Number: CM6800
• Description: LOW START UP CURRENT PFC/PWM CONTROLLER COMBO
• Manufacturer: Champion Microelectronic Corp.

BLOCK DIAGRAM (CM6800)
15
2004/02/11
2
4
3
7
8
6
5
9
IAC
VFB
VRMS
ISENSE
RAMP1
RAMP2
VDC
SS
DC ILIMIT
Vcc
2.5V
20uA
VREF
350
Rev. 1.6
-
+
GMv
SW SPST
VEAO
1.5V
MODULATOR
.
16
350
GAIN
0.3V
SW SPST
SW SPST
-
+
-
+
LOW POWER
DETECT
SW SPST
3.5K
PWM
CMP
-
+
3.5K
SS CMP
+
-
GMi
Champion Microelectronic Corporation
L
OSCILLATOR
IEAO
.
OW
1
2.45V
VFB
PFC CMP
S
+
-
17.9V
0.5V
VCC
TART-
-
+
VIN OK
.
+
-
TRI-FAULT
U
-
+
VCC OVP
P
DUTY CYCLE
C
LIMIT
2.75V
URRENT
-1V
1.0V
+
-
PFC ILIMIT
PFC OVP
+
-
.
-
+
Q
PFC/PWM C
DC ILIMIT
S
R
PWM
DUTY
VCC
S
R
S
R
S
R
UVLO
Q
Q
Q
Q
Q
Q
ONTROLLER
REFERENCE
13
7.5V
VCC
CM6800/1
PFCOUT
PWMOUT
CLK
POWER
FACTOR
CORRECTOR
Page 3
PULSE
WIDTH
MODULATOR
MPPWM
MNPWM
MNPFC
MPPFC
C
OMBO
VCC
GND
PWM OUT
PFC OUT
GND
VREF
VCC
GND
10
14
12
11