ISL6731A Datasheet, PDF (4/20 Pages) Intersil Corporation – Power Factor Correction Controllers

Block Diagram
EMI CHOKE
V_LINE
C_F3
L_m
D_F1
D_F2
L_F
C_F2
V_I
L
C_F1
D
Q₁
C_OUT
V_OUT
R_CS
VCC
C_REG
VREG
R_IN2
R_IN1
R_SEN
ISEN
CURRENT
MIRROR
2:1
ICS > --I--O--2---C----
ICS
OTP
ICOMP
Gmi
I_REF
0----.-2---B-5----O-Â¥----2-V----I--N--- _{C O M P B}
CEQ GEN.
VCS = ^{R-----I--S------Â¥---2--I-I---S----E-----N--}
R_IS
UVLO
LINEAR
REGULATOR
CONTROL
LOGIC
PWM
COMP
SKIP
OSCILLATOR
SOFT-START
ENABLE
VIN
COMPB _SKIP
COMP-1V _OVERPOWER
CLAMP
LIMIT
Gmv
20µA
VCC
Vro2
Vro1
Vref
I_FB
GATE
GND
OVP
R_OV1
R_OV2
R_FB2
FB
R_FB1
BO
C_BO
SKIP
COMP