ncp1608 ON Semiconductor, ncp1608 Datasheet - Page 21

• Manufacturer Part Number: ncp1608
• Description: Critical Conduction Mode Pfc Controller Utilizing A Transconductance Error Amplifier
• Manufacturer: ON Semiconductor

Application Information
demonstration board, and an application note to facilitate
the design of the NCP1608 and reduce development cycle
time. All the tools can be downloaded or ordered at
www.onsemi.com.
J2
ON Semiconductor provides an electronic design tool, a
F1
C1
L1
L2
C2
Bridge
Cin
Ccomp
Rcomp1
Ccomp1
Figure 47. Application Schematic
Rctup1
Rctup2
Ct2
http://onsemi.com
Rct
Ct1
J1
R1
Rzcd
Rstart1
Daux
1
2
3
4
Ccs
21
C3
Lboost
FB
Control
Ct
CS
NCP1608
determine most of the system parameters of a boost
pre−converter. The demonstration board is a boost
pre−converter that delivers 100 W at 400 V. The circuit
schematic is shown in Figure 47. The pre−converter design
is described in Application Note AND8396/D.
Rcs
The electronic design tool allows the user to easily
U1
Rstart2
CVcc
GND
D1
DRV
ZCD
Vcc
Czcd
+
8
6
5
7
Dvcc
CVcc2
Rs3
Rdrv
Rs2
Ddrv
Rs1
Dboost
Q1
Rout2b
Rout2a
Ro1a
Ro1b
NTC
t°
Cbulk
+
J3