CM6500UN (1MHz PFC)
http://www.championmicro.com.tw
EPA/90+ ZVS-Like PFC CONTROLLER
Design for High Efficient Power Supply at both Full Load and Light Load
APPLICATIONS
PIN CONFIGURATION
EPA/90+ related Power Supply
SOP-14 & DIP-14
TOP View
Desktop PC Power Supply
Internet Server Power Supply
LCD Power Supply
PDP Power Supply
AC Adaptor
14
13
12
11
10
9
1
2
3
4
5
6
7
IEAO
IAC
VEAO
VFB
VREF
VCC
ISENSE
VRMS
ISS
IPC Power Supply
UPS
Battery Charger
PFCOUT
PGB
DC Motor Power Supply
Monitor Power Supply
Telecom System Power Supply
Distributed Power
PGTHL
RTCT
GND
8
PIN DESCRIPTION
Operating Voltage
Pin No.
Symbol
Description
Min.
Typ.
Max.
Unit
PFC transconductance current error amplifier output
IEAO
1
0
VREF
V
(GMi).
IAC has 2 functions:
1. PFC gain modulator reference input.
2. Typical RAC resistor is about 6 Mega ohm to 8 Mega
ohm to sense the line.
IAC
2
0
100
uA
PFC Current Sense: for both Gain Modulator and PFC
current ILIMIT comparator.
ISENSE
3
4
-1.3
0
0.7
6
V
V
Line Input Sense pin for multiplier and also it is the PFC
Brown out sense pin.
VRMS
1)PFC Soft Start pin: It supplies ~ 10uA to SS pin. It provides a
close-loop soft start function during power supply start up. PFC
Soft Start function can adjust by a simple capacitor to ground and
it can be around 1uF.
5
ISS
0
VCC
V
2
2)When AC turn off VFB voltage sense is lower than
PGTHL(PGB comparator), SS pin is discharged through an
internal ~ 70K Ohm resistor.
2014/11/11 Rev. 1.0
Champion Microelectronic Corporation
CHAMP [ CHAMPION MICROELECTRONIC CORP. ]
