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PDF FA5644 Data sheet ( Hoja de datos )

Número de pieza FA5644
Descripción Switching Power Supply Control IC
Fabricantes Fuji 
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No Preview Available ! FA5644 Hoja de datos, Descripción, Manual

FA5640/41/42/43/44/48
Fuji Switching Power Supply Control IC
Green mode Quasi-resonant IC
FA5640/41/42/43/44/48
Application Note
Fuji Electric Co., Ltd.
AN-064E Rev.1.3
April 2012
April 2012
Fuji Electric Co., Ltd.
1 http://www.fujielectric.co.jp/products/semiconductor/

1 page




FA5644 pdf
FA5640/41/42/43/44/48
4. Block diagram
FA5640
ZCD
ZCD
Bottom
detection
Bottom Skip
control
7.5V
30k
Pulse width
detection
Restart Timer
25μs
4.8V
MP1
Off timer
(2μs)
VH
1 shot
(290ns)
set
enb
Input
voltage
detection
mode select
signal
VinH
Startup
management
11V/9V
UVLO
Startup
Current
14V/8V
VCC
4.8V Reg.
Resistance ratio
MP1 on/off
24k
91.3%/100%
84.1%/100%
VinH
- Disable
4.8V
10μA
+
VthFB0
0.45V
0.35V
VinH
IS
FB 1/6
Current
comparator
Reset
Max. Ton
(24μs)
SQ
R2
R1
Standby
0.55V
Standby
detection
Soft start
(1ms)
Overload
3.5/3.3V
VthIS
VinH
0.5V
0.45V
VthIS at Standby
VinH
0.15V
0.10V
Timer
enb
200ms
1600ms
OLP
protection
Reset
Internal
supply
enb
Driver
OUT
Off timer
(4.5μs)
ZCD
OVP
detection
OVP1
Latch
protection
Latch timer
60μs
6V
GND
FA5641
ZCD
ZCD
Bottom
detection
Bottom Skip
control
7.5V
30k
Pulse width
detection
Restart Timer
7.6μs
4.8V
MP1
Off timer
(2μs)
VH
1 shot
(290ns)
set
enb
Min. fsw
(25kHz)
Input
voltage
detection
mode select
signal
VinH
Startup
management
11V/9V
UVLO
Startup
Current
14V/8V
VCC
4.8V Reg.
Resistance ratio
MP1 on/off
91.3%/100%
24k 84.1%/100% VinH
4.8V
10μA
- Disable
+
VthFB0
0.45V
0.35V
VinH
IS
FB 1/6
Current
comparator
Reset
Max. Ton
(24μs)
SQ
R2
R1
Standby
0.55V
Standby
detection
Soft start
(1ms)
Overload
3.5/3.3V
VthIS
VinH
0.5V
0.45V
VthIS at Standby
VinH
0.15V
0.10V
Timer
enb
200ms
1600ms
OLP
protection
Reset
Internal
supply
enb
Driver
OUT
Off timer
(4.5μs)
OVP
detection
OVP1
ZCD
Latch
protection
Latch timer
60μs
6V
GND
Fuji Electric Co., Ltd.
AN-064E Rev.1.3
April 2012
5 http://www.fujielectric.co.jp/products/semiconductor/

5 Page





FA5644 arduino
FA5640/41/42/43/44/48
Overload protection part (FB pin)
Item
OLP threshold voltage
Hysteresis
Fault time duration
Auto recovery mode latch-off
time duration
Symbol
Volp1
Volp2
Hysolp
Tolp
Toff
Conditions
Vfb increasing
Vfb decreasing
Volp1-Volp2
FA5640/41/42/43
Delay from Vfb>Volp1
FA5644
Delay from Vfb>Volp1
FA5648
Delay from Vfb>Volp1
FA5640/41/42/43
The OFF time only by
internal signal
MIN.
3.3
3.0
0.1
140
195
200
980
TYP.
3.5
3.3
0.2
200
256
256
MAX.
3.8
3.6
0.3
260
320
333
Unit
V
V
V
ms
ms
ms
1400 1820 ms
Soft start part
Item
Soft-start time
Symbol
Tsoft
Conditions
at start-up only
MIN.
0.7
TYP.
1.0
MAX.
1.3
Unit
ms
Standby-mode function (IS pin) (FA5640,FA5641,FA5642,FA5644)
Item
Symbol
Conditions
Stand-by detection threshold
voltage at IS pin
VISstb Read timing is turn-off
after Tstb.
Stand-by detection timing
Maximum threshold voltage at
stand-by
Tstb
VthISs1
VthISs2
Delay from turn-off
Vfb=3.2V
Vvh=141V
FA5640/41/44
Vfb=3.2V
Vvh=324V
MIN.
0.5
1.5
0.12
0.07
TYP.
0.55
2.0
0.15
MAX.
0.6
2.5
0.18
Unit
V
us
V
0.10 0.13
V
Other protection part
Item
Maximum on pulse width
Minimum switching frequency
Symbol
Tonmax
Fmin
Conditions
FA5640/41/42/43/44
Vis=0V, Vis=2V
Vzcd=0V
FA5648
Vis=0V, Vis=2V
Vzcd=0V
FA5641/43
Vis=0V,Vfb=3.2V
MIN.
20
TYP.
24
MAX. Unit
28 us
8 9 10 us
20.8 25 30.3 kHz
Drive Output part (OUT pin)
Item
OUT Low voltage
OUT High voltage
Rise time
Fall time
Symbol
VOL
VOH
tr
tf
Condition
IOL=100mA
Vcc=15V
IOH=-100mA,
Vcc=15V
Vcc=15V, CL=1nF
Tj=25
Vcc=15V, CL=1nF
Tj=25
MIN.
0.5
12
20
12.5
TYP.
1.0
13.2
40
25
MAX.
2.0
14.5
80
60
Unit
V
V
ns
ns
Fuji Electric Co., Ltd.
AN-064E Rev.1.3
April 2012
11 http://www.fujielectric.co.jp/products/semiconductor/

11 Page







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