FAN6921ML Datasheet, PDF (8/23 Pages) Fairchild Semiconductor – Integrated Critical Mode PFC/Quasi-Resonant Current Mode PWM Controller

Electrical Characteristics (Continued)
VDD=15V, TA=-40~105°C (TA=TJ), unless otherwise specified.
Symbol
Parameter
Conditions
PFC Stage
Voltage Error Amplifier Section
Gm
Transconductance⁽⁴⁾
VREF
VINV-H
Feedback Comparator Reference Voltage
Clamp High Feedback Voltage
RANGE=Open
RANGE=Ground
VRATIO
Clamp High Output Voltage Ratio
VINVH / VREF,
RANGE=Open
VINVH / VREF,
RANGE=Ground
VINV-L
Clamp Low Feedback Voltage
VINV-OVP
Over Voltage Protection for INV ^RANGE=Open
Input
RANGE=Ground
tINV-OVP
VINV-UVP
Over-Voltage Protection Debounce Time
Under-Voltage Protection for INV Input
tINV-UVP Under Voltage Protection Debounce Time
VINV-FB-Latch INV Threshold Voltage for Blocking FB latch
VINV-BO
VINV-BO2
PWM and PFC Off Threshold for Brownout Protection
PWM Off Threshold Voltage for Brownout Protection,
PFC Off
VCOMP
VOZ
Comparator Output High Voltage
Zero Duty Cycle Voltage on COMP Pin
Comparator Output Source
Current
VINV=2.3V, VCOMP=1.5
VINV=1.5V
ICOMP
Comparator Output Sink Current
PFC Current Sense Section
VCSPFC
Threshold Voltage for Peak
Current Cycle-by-Cycle Limit
RANGE=Open,
VINV=2.75V, VCOMP=5
RANGE=Ground,
VINV=2.65V, VCOMP=5
VCOMP=5V
tPD
Propagation Delay
tBNK
Leading-Edge Blanking Time
AV
CSPFC Compensation Ratio for THD
Min. Typ. Max. Units
100
2.465
2.70
2.60
1.06
125
2.500
2.75
2.65
150
2.535
2.80
2.70
1.14
µmho
V
V
V
1.04
1.08
2.25
2.30
2.35
V
2.90
2.95
V
2.75
2.80
V
50
70
90
µs
0.35
0.45
0.55
V
50
70
90
µs
0.7
0.8
0.9
V
1.15
1.20
1.25
V
0.7
0.8
0.9
V
4.8
6.0
V
1.15
1.25
1.35
V
15
25
35
µA
0.50
0.75
1.00
mA
20
30
40
µA
20
30
40
µA
0.60
V
110
200
ns
110
180
250
ns
0.90
0.95
1.00
Continued on the following page…
© 2010 Fairchild Semiconductor Corporation
FAN6921ML • Rev. 1.0.1
8
www.fairchildsemi.com