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ELECTRICAL CHARACTERISTICS:
(Conti.) Unless otherwise stated, these specifications apply Vcc=+14V, R
T
=Operating Temperature Range (Note 1)
A
Symbol
Parameter
DC I
Comparator
LIMIT
Threshold Voltage
Delay to Output (Note 4)
DC to DC PWM Brown Out Comparator
OK Threshold Voltage
Hysteresis
GAIN Modulator
Gain1 (Note 3)
Gain2 (Note )3
Gain3 (Note 3)
Gain4 (Note 3)
Bandwidth (Note 4)
Output Voltage = Rmul *
(I
-I
SENSE
OFFSET
Oscillator (Measuring fpfc)
Initial fpfc Accuracy 1
Voltage Stability
Temperature Stability
Total Variation
Ramp Valley to Peak Voltage
PFC Dead Time (Note 4)
CT Discharge Current
2010/08/03
Rev. 1.2
Overdrive Voltage = 100mV
I
= 20
AC
T=25℃ SS<VREF
I
= 20
AC
2.375V @ T=25℃ SS<VREF
I
= 20
AC
T=25℃ SS<VREF
I
= 20
AC
@ T=25℃ SS<VREF
I
= 50
AC
)
SS<VREF
R
= 5.88 kΩ, C
T
IAC=0uA
11V < V
Line, Temp
VEAO=6V and IAC=20uA
V
RAMP2
Champion Microelectronic Corporation
CM6800T
EPA/85+ PFC+PWM COMBO CONTROLLER
Design for High Efficient Power Supply
Test Conditions
μ
A, V
=1.125, V
= 2.375V @
RMS
FB
μ
A, V
= 1.45588V, V
RMS
μ
A, V
=2.91V, V
= 2.375V @
RMS
FB
μ
A, V
= 3.44V, V
RMS
FB
μ
I
= 40
A
AC
μ
A, V
= 1.125V, V
= 2V
RMS
FB
= 1000pF, T
= 25℃
T
A
< 16.5V
CC
= 0V, V
= 2.5V
RAMP1
(Turbo-Speed PFC+Green PWM)
= 5.88 kΩ, C
= 1000pF,
T
T
CM6800T
Min.
Typ.
0.92
1.0
700
2.1
2.3
880
950
4.4
5.5
=
FB
4
5
1.2
1.5
= 2.375V
0.9
1.05
1
0.74
0.8
64
68
2
2
60
2.5
550
10
11
Unit
Max.
1.08
V
ns
2.5
V
1000
mV
6.6
6
1.8
1.3
MHz
0.86
V
72
kHz
%
%
75
kHz
V
950
ns
12
mA
7
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