CM6802
NO BLEED RESISTOR GREEN MODE PFC/PWM CONTROLLER COMBO
TYPICAL PERFORMANCE CHARACTERISTIC
220
200
180
160
140
120
100
80
127
120
113
106
99
92
85
78
60
40
20
0
71
64
57
-500 -400 -300 -200 -100
0
100
200
300
400
500
2
2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9
VFB (V)
3
ISENSE (mV)
Voltage Error Amplifier (gmv) Transconductance
Current Error Amplifier (gmi) Transconductance
2.2
2
0.4
0.35
0.3
1.8
1.6
1.4
1.2
1
0.25
0.2
0.15
0.1
0.8
0.6
0.4
0.2
0
0.05
0
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
VRMS (V)
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
VRMS (V)
Gain Modulator Transfer Characteristic (K)
Gain
- 1
I
I
GAINMOD −I
I
SENSE −IOFFSET
K =
OFFSET mV
Gain =
AC x (6 - 0.625)
I
AC
2003/06/25 Preliminary
Champion Microelectronic Corporation
Page 7
CHAMP [ CHAMPION MICROELECTRONIC CORP. ]
