CM6802 Champion Microelectronic, CM6802 Datasheet - Page 3

• Manufacturer Part Number: CM6802
• Description: NO BLEED RESISTOR GREEN MODE PFC/PWM CONTROLLER COMBO
• Manufacturer: Champion Microelectronic

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BLOCK DIAGRAM
2003/06/25
15
2
4
3
7
8
6
5
9
VFB
IAC
VRMS
ISENSE
RAMP1
RAMP2
VDC
SS
DC ILIMIT
11
12
13
14
15
16
VCC
Vcc
2.5V
20uA
VREF
PWM OUT
PFC OUT
V
V
V
VEAO
350
CC
REF
FB
Preliminary
-
+
GMv
SW SPST
VEAO
1.5V
MODULATOR
.
16
350
GAIN
0.5V
SW SPST
PWM driver output
PFC driver output
Positive supply
Buffered output for the internal 7.5V reference
PFC transconductance voltage error amplifier input
PFC transconductance voltage error amplifier output
SW SPST
N
O
-
+
-
+
LOW POWER
DETECT
SW SPST
3.5K
B
PWM
CMP
LEED
-
+
3.5K
SS CMP
+
-
GMi
IEAO
OSCILLATOR
.
R
ESISTOR
1
2.45V
Champion Microelectronic Corporation
VFB
+
-
19.4V
VCC
PFC CMP
-
+
VIN OK
+
-
.
G
VCC OVP
REEN
DUTY CYCLE
LIMIT
2.75V
-1V
M
1.0V
ODE
+
-
PFC ILIMIT
PFC OVP
+
-
.
-
+
Q
PFC/PWM C
DC ILIMIT
R
S
PWM
DUTY
VCC
10
0
0
0
0
fosc=2xfpwm=4xfpfc
S
R
S
R
S
R
UVLO
Q
Q
Q
Q
Q
Q
ONTROLLER
7.5
2.5
REFERENCE
15
13
7.5V
VCC
PFCOUT
CLK
PWMOUT
CM6802
VCC
VCC
20
3
6
Page 3
POWER
FACTOR
CORRECTOR
PULSE
WIDTH
MODULATOR
MPPWM
MNPWM
MPPFC
MNPFC
C
OMBO
VCC
GND
PWM OUT
VCC
PFC OUT
GND
VREF
V
V
V
V
V
V
GND
10
14
12
11