FAN6921MR Fairchild Semiconductor, FAN6921MR Datasheet - Page 8

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FAN6921MR

Manufacturer Part Number
FAN6921MR
Description
The highly integrated FAN6921MR combines Power Factor Correction (PFC) controller and Quasi-Resonant PWM controller
Manufacturer
Fairchild Semiconductor
Datasheet

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© 2009 Fairchild Semiconductor Corporation
FAN6921MR Rev. 1.0.2
Electrical Characteristics
V
PFC Stage
Voltage Error Amplifier Section
PFC Current Sense Section
DD
Symbol
V
V
V
t
t
V
V
=15V, T
V
V
V
INV-OVP
INV-UVP
COMP-BO
V
I
INV-OVP
V
INV-UVP
COMP
Gm
INV-BO
V
CSPFC
t
RATIO
COMP
t
INV-H
INV-L
BNK
A
REF
PD
OZ
V
A
=-40°C ~105°C (T
Transconductance
Feedback Comparator Reference
Voltage
Clamp High Feedback Voltage
Clamp High Output Voltage Ratio
Clamp Low Feedback Voltage
Over-Voltage Protection for INV
Input
Over-Voltage Protection Debounce
Time
Under-Voltage Protection for INV
Input
Under-Voltage Protection
Debounce Time
PWM and PFC Off Threshold for
Brownout Protection
Limited Voltage on COMP Pin for
Brownout Protection
Comparator Output High Voltage
Zero Duty Cycle Voltage on COMP
Pin
Comparator Output Source
Current
Comparator Output Sink Current
Threshold Voltage for Peak
Current Cycle-by-Cycle Limit
Propagation Delay
Leading-Edge Blanking Time
CSPFC Compensation Ratio for
THD
Parameter
A
=T
(4)
J
), unless otherwise specified.
(Continued)
(4)
RANGE=Open
RANGE=Ground
V
RANGE=Open
V
RANGE=Ground
RANGE=Open
RANGE=Ground
V
V
RANGE=Open,
V
RANGE=Ground,
V
V
INVH
INVH
INV
INV
INV
INV
COMP
=2.3V, V
=1.5V
=2.75V, V
=2.65V, V
/ V
/ V
=5V
8
Conditions
REF
REF
,
,
COMP
COMP
COMP
=1.5V
=5V
=5V
2.465
Min.
2.70
2.60
1.06
1.04
2.25
0.35
1.15
1.55
1.10
0.50
0.90
100
110
Continued on the following page…
4.8
50
50
15
20
20
2.500
Typ.
2.75
2.65
2.35
2.90
2.75
0.45
1.20
1.60
1.25
0.75
0.82
0.95
125
110
180
70
70
30
30
30
Max.
2.535
2.80
2.70
1.14
1.08
2.45
2.95
2.80
0.55
1.25
1.65
1.40
1.00
1.00
150
200
250
6.0
90
90
45
40
40
www.fairchildsemi.com
Units
µmho
V/V
V/V
mA
µA
µA
µs
µs
ns
ns
V
V
V
V
V
V
V
V
V
V

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