CM6800A_09 Datasheet, PDF (15/18 Pages) Champion Microelectronic Corp. – LOW START-UP CURRENT PFC/PWM CONTROLLER COMBO

CM6800A
LOW START-UP CURRENT PFC/PWM CONTROLLER COMBO
APPLICATION CIRCUIT (Voltage Mode)
IVIN_EMC
R5 EMC FILTER R3
L2
L3
VIN
AC
R2 C3
IVIN
D4
RT1
IVIN
PFC_VIN
C8 R1
C2
R18
D6
D7
1N4002 1N4002
R59
C46
PFC_VIN
IAC
IBOOT
R10
R12
R14
R11
R13
R15
IL1
L1
Q3 Q4
C33
100n
Q1
D12
PFC_DC
R22
R26
Q2N2222
1N4148
22
18k
Q2
Q2N904
R23
R24
75
R25 ²²
10k
C23
470p
VFB
R64
R60
R66
C44 C45
C41
C30
R58 C43
ISENSE
VRMS
C47 VREF
R56
R57
SS
VDC
VCC
IEAO
U2 CM6800/01/24
1 _{IEAO VEAO} 16
2 _IAC
VFB ¹⁵
3 _{I-SENSE VREF} 14
4
13
VRMS VCC
5 _{SS PFC-OUT} 12
6
11
VDC PWM-OUT
7 _{RAMP1 GND} 10
8 _{RAMP2 ILIMIT} 9
VEAO
VREF
VCC
VCC
C52 C53
1u 100n
PWM_OUT ZD2
VREF
C54
D5
D5
PFC_Vout
PFC_Vout
IC10
D10
R16A
MUR1100
C10
R17A
C55A
R65A
R63
C57
C56
R62
C48
C49
C50
ILIMIT
R61
470
C51
R44
PFC_Vout
PWM_IN
C14 _R34
C4
ISO1
VDC
C38
C7
R27
C22
10n
100k
10n
10n 4.7
D9A
IL4
L4
D13
MUR1100
C15
D8
T1
MUR1100
R35
D9B
4.7
C22
10n
L5
IC17
IC18
PWM_Vout
ILOAD R45
R49
R43
R46 C40
C39
C17
C18
C19
PWM_Rload
500m
U1
CM431
R48
10n
VCC
C34
100n
PWM_OUT
Q6
Q2N2222
R28
PWM_DC
Q7
22
Q2N904
Q3
R29
10k
IBIAS
D16
R32A
R32
VCC
1N4148
C31
R33
T 2:3
ILIMIT
R31
ZD1
6.8V
2009/08/10 Rev. 1.6
Champion Microelectronic Corporation
Page 15