R2A20112ASP_16 Datasheet, PDF (3/9 Pages) Renesas Technology Corp – Critical Conduction Mode Interleaved PFC Control IC

R2A20112ASP
Block Diagram
Preliminary
ZCD-M
ZCD-S
10μA 10μA
Vref
ZCD COMP1
Clamp –
-0.1V ~ 4.5V ₊
Vzcd_lo=1.3V
300mVhys _{ZCD COMP2}
Clamp –
-0.1V ~ 4.5V ₊
Vref
50μA
Hi: ON
TM
+
Vtm=3.6V
2.2Vhys ^–
VREF
40μA 5μA
VREF: 5V
SGND
RT
Iramp
Tstart
Vref
Iramp
VREF: 5V
UVLO
ON: 10.5V
OFF: 9.3V
VCC
VCC
GD-M
GD-S
Logic
Vref
5μA
OCP COMP1
M-OCP
+
–
5μA
OCP COMP2
S-OCP
+
–
Stop GD
SW COMP
–
0.3V
GD Disable
OVP BLOCK
COMP
Discharge
FB
+
OCP-M
OCP-S
Dynamic UVP
+
– Vfb
×0.93V
Error Amp
–
FB
+
Vfb=2.49V
Vref
10μA
SS
RAMP
COMP
RAMP Level shift
0.9V (Design SPEC)
UVL
FBLOW
4.3V
PGND
R03DS0047EJ0201 Rev.2.01
Jan 08, 2016
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