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?2007 Fairchild Semiconductor Corporation
 
www.fairchildsemi.com
SG6932 " Rev. 1.1.3
7
Electrical Characteristics
V
DD
=15V, T
A
= 25癈 unless otherwise noted.
Symbol
Parameter
Conditions
Min.     Typ.    Max.    Units
V
DD
 Section
V
DD-OP
 
Continuously Operating Voltage
 
 
20
V
I
DD ST
 
Start-Up Current
V
DD
  0.16V
 
10
20
糀
I
DD-OP
 
Operating Current
V
DD
 = 15V; OPFC OPWM open
 
6
10
mA
V
TH-ON
 
Start Threshold Voltage
13
14
15
V
V
DD-min
 
Minimum Operating Voltage
9
10
11
V
V
DD-OVP
     V
DD
 OVP1 (Turn Off PWM with Delay)
23.4
24.5
25.5
V
tVDD-OVP     Delay Time of VDD OVP1
RI=24k&
8
 
25
約
Oscillator
V
RI
 
RI Voltage
1.176     1.200     1.224
V
f
OSC
 
PWM Frequency
R
I
=24k&
62
65
68
kHz
RI
RI Range
12
 
47
k&
RI
OPEN
 
RI Pin Open Protection
If RI > RI
OPEN
, PWM Turned Off
 
200
 
k&
RI
SHORT
     RI Pin Short Protection
If RI > RI
SHORT
, PWM Turned Off
 
2
 
k&
V
RMS
 for UVP and ON/OFF
V
RMS-UVP-1
 
RMS AC Voltage Under-Voltage Threshold to Turn Off PFC
(with T
UVP
 Delay) for UVP Mode1
0.75
0.80
0.85
V
V
RMS-UVP-2
    Recovery Level on V
RMS
 for UVP
V
RMS-
UVP-1
+0.17
V
RMS-
UVP-1
+0.19
V
RMS-
UVP-1
+0.21
V
t
UVP
 
Under-Voltage Protection to
Turn Off PFC Delay Time (No
Delay for Start-up)
R
I
=24k&
150
195
240
ms
PFC Stage
Voltage Error Amplifier
V
REF
 
Reference Voltage
2.95
3.00
3.05
V
A
V
 
Open-Loop Gain
 
60
 
dB
Z
o
 
Output Impedance
 
110
 
k&
OVP
FBPFC
    PFC Over-Voltage Protection
3.20
3.25
3.30
V
?/DIV>
OVP
FBPFC
 
PFC Feedback Voltage Protection Hysteresis
60
90
120
mV
V
FBPFC-H
     Clamp-High Feedback Voltage
3.10
3.15
3.20
V
G
FBPFC-H
     Clamp-High Gain
 
0.5
 
mA/V
V
FBPFC-L
     Clamp-Low Feedback Voltage
2.75
2.85
2.90
V
G
FBPFC-L
     Clamp-Low Gain
 
6.5
 
mA/V
I
FBPFC-L
 
Maximum Source Current
1.5
2.0
 
mA
I
FBPFC-H
     Maximum Sink Current
70
110
 
糀
UVP
VFB
     PFC Feedback Under-Voltage Protection
0.35
0.40
0.45
V
V
OFF-FBPFC
    Voltage Level on FBPFC to Disable OPWM
2.15
2.20
2.25
V
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