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SG6932 Datasheet(PDF) 7 Page - Fairchild Semiconductor

Part # SG6932
Description  PFC / Forward PWM Controller
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

SG6932 Datasheet(HTML) 7 Page - Fairchild Semiconductor

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© 2007 Fairchild Semiconductor Corporation
www.fairchildsemi.com
SG6932 • Rev. 1.1.3
7
Electrical Characteristics
VDD=15V, TA= 25°C unless otherwise noted.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Units
VDD Section
VDD-OP
Continuously Operating Voltage
20
V
IDD ST
Start-Up Current
VDD – 0.16V
10
20
μA
IDD-OP
Operating Current
VDD = 15V; OPFC OPWM open
6
10
mA
VTH-ON
Start Threshold Voltage
13
14
15
V
VDD-min
Minimum Operating Voltage
9
10
11
V
VDD-OVP
VDD OVP1 (Turn Off PWM with Delay)
23.4
24.5
25.5
V
tVDD-OVP
Delay Time of VDD OVP1
RI=24kΩ
8
25
μs
Oscillator
VRI
RI Voltage
1.176
1.200
1.224
V
fOSC
PWM Frequency
RI=24kΩ
62
65
68
kHz
RI
RI Range
12
47
kΩ
RIOPEN
RI Pin Open Protection
If RI > RIOPEN, PWM Turned Off
200
kΩ
RISHORT
RI Pin Short Protection
If RI > RISHORT, PWM Turned Off
2
kΩ
VRMS for UVP and ON/OFF
VRMS-UVP-1
RMS AC Voltage Under-Voltage Threshold to Turn Off PFC
(with TUVP Delay) for UVP Mode1
0.75
0.80
0.85
V
VRMS-UVP-2
Recovery Level on VRMS for UVP
VRMS-
UVP-1
+0.17
VRMS-
UVP-1
+0.19
VRMS-
UVP-1
+0.21
V
tUVP
Under-Voltage Protection to
Turn Off PFC Delay Time (No
Delay for Start-up)
RI=24kΩ
150
195
240
ms
PFC Stage
Voltage Error Amplifier
VREF
Reference Voltage
2.95
3.00
3.05
V
AV
Open-Loop Gain
60
dB
Zo
Output Impedance
110
kΩ
OVPFBPFC
PFC Over-Voltage Protection
3.20
3.25
3.30
V
OVPFBPFC
PFC Feedback Voltage Protection Hysteresis
60
90
120
mV
VFBPFC-H
Clamp-High Feedback Voltage
3.10
3.15
3.20
V
GFBPFC-H
Clamp-High Gain
0.5
mA/V
VFBPFC-L
Clamp-Low Feedback Voltage
2.75
2.85
2.90
V
GFBPFC-L
Clamp-Low Gain
6.5
mA/V
IFBPFC-L
Maximum Source Current
1.5
2.0
mA
IFBPFC-H
Maximum Sink Current
70
110
μA
UVPVFB
PFC Feedback Under-Voltage Protection
0.35
0.40
0.45
V
VOFF-FBPFC
Voltage Level on FBPFC to Disable OPWM
2.15
2.20
2.25
V
Continued on following page…


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