CM6800T Champion Microelectronic Corp., CM6800T Datasheet - Page 7

• Manufacturer Part Number: CM6800T
• Description: Epa/85+ Pfc+pwm Combo Controller Design For High Efficient Power Supply
• Manufacturer: Champion Microelectronic Corp.

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