SG6901 Fairchild Semiconductor, SG6901 Datasheet - Page 9

• Manufacturer Part Number: SG6901
• Description: The highly integrated SG6901A is designed for power supplies with boost PFC and flyback PWM
• Manufacturer: Fairchild Semiconductor

© 2008 Fairchild Semiconductor Corporation
SG6901A • Rev. 1.0.2
Electrical Characteristics
V
PEAK CURRENT LIMIT
MULTIPLIER
PFC OUTPUT DRIVER
PWM STAGE
FBPWM
FB
DD
t
t
Symbol
OPEN-PWM-
DCY
OPEN-PWM
V
t
V
I
A
t
OPEN-LOOP
LEB-PFC
=15V and T
MO–max
t
PD-PFC
t
I
Hiccup
I
V
OL-PFC
OH-PFC
R-PFC
F-PFC
V
MO–2
t
v-PWM
Z
MO-1
I
I
V
PFC
I
AC
FB
IMP
P
PK
FB
Z
MAX
Constant Current Output
Peak Current Limit Threshold
Voltage Cycle-by-Cycle Limit (V
< V
Propagation Delay
Leading-Edge Blanking Time
Input AC Current
Maximum Multiplier Current Output
Multiplier Current Output (Low-line,
High-Power)
Multiplier Current Output (High-line,
High-Power)
Voltage of IMP Open
Output Voltage Maximum (Clamp)
Output Voltage Low
Interval OPFC Lags Behind OPWM
at Startup
Output Voltage High
Rising Time
Falling Time
Maximum Duty Cycle
FB to Current Comparator
Attenuation
Input Impedance
Maximum Source Current
PWM Open-Loop Protection Voltage
PWM Open-Loop Protection Delay
Time
Interval of PWM Open-Loop
Protection Reset
A
=25°C unless otherwise specified.
PK
)
Parameter
SENSE
R
V
V
Multiplier Linear Range
R
V
V
V
V
V
V
V
V
O/P=2V to 9V
V
O/P=9V to 2V
I
RMS
RMS
I
RMS
EA
RMS
EA
DD
DD
DD
DD
DD
=24KΩ
=24KΩ
=7.5V; R
=7.5V; R
=20V
=15V; I
=13V; I
=15V; C
=15V; C
=1.05V
=3V
=1.05V; I
=3V; I
9
Conditions
AC
O
O
L
L
=100mA
=100mA
I
I
=24KΩ
=24KΩ
=5nF;
=5nF;
=264µA;
AC
=90µA;
Min.
0.15
0.35
270
200
450
3.4
9.0
2.5
0.8
4.2
90
65
40
40
93
45
0
8
4
Continued on the following page…
Typ.
0.20
0.40
11.5
100
350
250
250
600
3.9
3.1
1.2
4.5
85
16
70
60
56
5
Max.
0.25
0.45
14.0
110
450
360
280
120
110
750
200
4.4
1.5
3.5
1.5
4.8
18
98
70
7
www.fairchildsemi.com
Units
V/V
mA
ms
KΩ
ms
ms
µA
µA
µA
µA
µA
ns
ns
ns
ns
%
V
V
V
V
V
V
V