CM6802A_12 Datasheet, PDF (2/25 Pages) Champion Microelectronic Corp. – EPA/80++ ZVS-Like PFC/PWM COMBO CONTROLLER

CM6802A/B/AH/BH (Dynamic Soft PFC/Green PWM)
http://www.championmicro.com.tw EPA/80++ ZVS-Like PFC/PWM COMBO CONTROLLER
Design for High Efficient Power Supply at both Full Load and Light Load
APPLICATIONS
‹ EPA/80++ related Power Supply
‹ Desktop PC Power Supply
‹ Internet Server Power Supply
‹ LCD Power Supply
‹ PDP Power Supply
‹ IPC Power Supply
‹ UPS
‹ Battery Charger
‹ DC Motor Power Supply
‹ Monitor Power Supply
‹ Telecom System Power Supply
‹ Distributed Power
PIN CONFIGURATION
SOP-16 (S16) / PDIP-16 (P16)
1
IEAO
VEAO
16
2
IAC
VFB
15
3
ISENSE
VREF
14
4
VRMS
VCC
13
5
SS
PFC OUT
12
6
VDC
PWM OUT
11
7
RAMP1
GND
10
8
RAMP2
DC ILIMIT
9
PIN DESCRIPTION
Pin No. Symbol
Description
Operating Voltage
Min. Typ. Max. Unit
PFC transconductance current error amplifier output
1
I_EAO
0
(Gmi).
VREF V
IAC has 2 functions:
1. PFC gain modulator reference input.
2. At start up, IAC is connected to VCC and it helps to
2
I_AC
0
reduce the startup time and it helps to reduce the no
load consumption. Typical RAC resistor is about 6 Mega
ohm to sense the line.
100
uA
PFC Current Sense: for both Gain Modulator and PFC
3
I_SENSE
-1.2
ILIMIT comparator.
Line Input Sense pin and also, it is the brown out sense
4
V_RMS
0
pin.
Soft start capacitor pin; can use it to on/off the boost
follower function; it is pulled down by 300 ohm internal
5
SS
0
resistor when DCILIMIT reach 1V; the power is limited
during the PWM Brown out.
0.7
V
VCC+0.3 V
10
V
2012/05/10 Rev. 1.5
Champion Microelectronic Corporation
2