CM6802
NO BLEED RESISTOR GREEN MODE PFC/PWM CONTROLLER COMBO
11
12
13
14
15
16
PWM OUT
PFC OUT
VCC
PWM driver output
0
0
VCC
VCC
20
V
V
V
V
V
V
PFC driver output
Positive supply
10
15
7.5
2.5
VREF
Buffered output for the internal 7.5V reference
VFB
PFC transconductance voltage error amplifier input
PFC transconductance voltage error amplifier output
0
0
3
6
VEAO
BLOCK DIAGRAM
1
13
16
VEAO
IEAO
VCC
VCC OVP
PFC OVP
VREF
-
VCC
19.4V
7.5V
REFERENCE
+
-
+
-
14
+
0.5V
.
LOW POWER
DETECT
2.75V
POWER
VFB
VCC
GMv
FACTOR
15
-
CORRECTOR
3.5K
GMi
.
S
R
Q
Q
+
PFC CMP
2.5V
+
+
-
.
VCC
MPPFC
IAC
-
2
-1V
+
-
GAIN
MODULATOR
PFC OUT
12
VRMS
S
R
Q
Q
4
PFC ILIMIT
3.5K
ISENSE
RAMP1
MNPFC
3
7
GND
OSCILLATOR
CLK
350
PFCOUT
PWM
DUTY
DUTY CYCLE
LIMIT
RAMP2
8
SW SPST
PWMOUT
PWM
-
VCC
CMP
MPPWM
+
1.5V
VDC
Vcc
PWM OUT
11
6
5
S
R
Q
Q
- SS CMP
20uA
350
+
VFB
-
-
+
1.0V
.
MNPWM
SS
2.45V
+
GND
VIN OK
DC ILIMIT
SW SPST
SW SPST
SW SPST
PULSE
WIDTH
VREF
DC ILIMIT
MODULATOR
Q
S
R
VCC
UVLO
9
GND
10
fosc=2xfpwm=4xfpfc
2003/06/25 Preliminary
Champion Microelectronic Corporation
Page 3
CHAMP [ CHAMPION MICROELECTRONIC CORP. ]
