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FAN6921AMRMY Folha de dados(PDF) 3 Page - Fairchild Semiconductor

Nome de Peças FAN6921AMRMY
Descrição Electrónicos  Integrated Critical-Mode PFC and Quasi-Resonant
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Fabricante Electrônico  FAIRCHILD [Fairchild Semiconductor]
Página de início  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FAN6921AMRMY Folha de dados(HTML) 3 Page - Fairchild Semiconductor

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© 2010 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN6921AMR
• Rev. 1.0.2
3
Internal Block Diagram
Figure 2. Functional Block Diagram
CSPWM
2
16
7
3
4
11
5
10
9
12
13
1
8
6
14
0.65V
0.7V
2.5V
INV
2.35V
COMP
0.45V
CSPFC
Blanking
Circuit
0.82V
Sawtooth
Generator
/ tON -MAX
THD
Optimizer
Multi-Vector Amp.
ZCD
OPFC
DRV
DRV
GND
10V
IZCD
2.1V/1.75V
Inhibit
Timer
PFC Zero-Current
Detector
VDD
Internal
Bias
Latched
OVP
UVP
Disable
Function
0.2V
Restarter
PFC
Current Limit
15.5V
Latched
17.5V
OPWM
DET
FB
RT
VIN
HV
RANGE
IHV
Debounce
100ms
2.1V/2. 45V
PFC RANGE Control
1V/1.3V
Latched
2.75V
2.65V
2.75V
RANGE
2.9V
RANGE
4.2V
2R
R
Debounce
Time
100µA
Soft-Start
10ms
PWM
Current Limit
IDET
Internal
OTP
Latched
110µs
10ms
0.8V
0.5V
IRT
Prog. OTP
/ Externally Triggering
Blanking
Circuit
IDET
5V
Latched
RT Pin Prog. OTP
Brownout
Q
Q
SET
CLR
S
R
Q
Q
SET
CLR
S
R
VB & Clamp
VCOMP to 1.6V
FB OLP
Timer
50ms
VB
Over-Power
Compensation
VCTL -PFC-ON / OFF
Starter
2. 25ms
28µs
15
NC
27.5V
OVP
1.2V
VINV
Startup
S/H
tOFF -MIN
(8µs/ 37µs/2.25ms)
DET OVP
2.5V
tOFF
Blanking
(4µs)
V DET
Latched
Valley
Detector
I DET
1
st
Valley
tOFF -MIN
+9µs
Debounce
100ms
Brownout
Comparator
Latched
Protection
Brownout
Protection
RT Pin Externally Triggering
DET Pin OVP
VDD Pin OVP
Internal OTP
Debounce
2.5ms / 500ms
Debounce
70µs
PFC &
Multi-Vector Amp.
ON / OFF
Auto-Recovery Protection
Two-Step
UVLO
18V/10V/7.5V
ZFB


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