CM6900 Datasheet, PDF (4/19 Pages) List of Unclassifed Manufacturers – PFC/PWM COMBO w/ INRUSH CURRENT CONTROL & SEPARATED PFCOVP

CM6900
PFC/PWM COMBO w/ INRUSH CURRENT CONTROL & SEPARATED PFCOVP
15 VDDD
16 VCCA
17 VREF
18 VFB2
19 VFB
20 VEAO
Digital Power
Analog Power
Buffered output for the internal 7.5V reference
PFC transconductance voltage error amplifier input
PFC transconductance voltage error amplifier input
PFC transconductance voltage error amplifier output
VCCA-
0.3
VCCA
VCCA+0.
3
10
15
20
V
7.5
V
0
2.5
3
V
0
2.5
3
V
0
6
V
SIMPLIFIED BLOCK DIAGRAM
20
VEAO
1
IEAO
18
VFB2
16
VCCA
19 ^VFB
2.5V
2 ^IAC
VRMS
4
3 ^ISENSE
INRUSHSTOPB
5
8 ^RAMP1
9 ^RAMP2
GMV
-
.
+
0.5V
GAIN
MODULATOR
LOW POWER
DETECT
3.5K
GMI
+
.
-
VCCA
19.4V
VCC OVP
+
-
2.75V
PFC CMP
+
-
-1V
Inrush Current
UVLO
+
-
-1.8V
3.5K
OSCILLATOR
PFC OVP
+
.
-
+
-
PFC ILIMIT
350
SW SPST
DUTY CYCLE
LIMIT
PWM
DUTY
1.5V
VDC
7
VCCA
20uA350
6 ^SS
SW SPST
SW SPST
PWM
CMP
SS CMP
SW SPST
VFB
2.45V
-
.
+
VIN OK
1.0V
DC ILIMIT
7.5V
REFERENCE
S
Q
R
Q
S
Q
R
Q
CLK
PFCOUT
PWMOUT
S
Q
R
Q
VREF
DC ILIMIT
10
Q
S
R
VCCA
UVLO
CM6900(ON:13V/OFF:10V)
VREF
17
MPPFC
VDDD
15
PFC OUT
14
MNPFC
VSSD
VDDD
MPPWM
PWM OUT
13
MNPWM
VSSD
12
AGND
11
2003/04/23 Preliminary Rev. 1.2
Champion Microelectronic Corporation
Page 3