FA5640 Datasheet, PDF (8/35 Pages) Fuji Electric – Fuji Switching Power Supply Control IC

FA5640/41/42
(2) Recommended operating conditions
Item
Symbol
MIN.
TYP.
MAX.
Unit
Supply voltage
Vcc
11
15
26
V
Input voltage at VH pin
Capacitance at VCC pin
Vvh
50
Cvcc
10
－
450
V
47
220
uF
Turn-off resonant period
Ambient temperature in operation
Trs
－
2
4
us
Ta
-40
－
85
℃
(3) DC Electric characteristics (Unless otherwise specified : VCC=15V, VH=141V, ZCD=0V, FB=3V,
IS=open, Tj=25℃)
Current sense part (IS pin)
Item
Symbol
Conditions
MIN.
TYP. MAX. Unit
Input bias current
IIS
Vis=0V
-15
-10
-5
uA
Maximum threshold voltage
VthIS1
VthIS2
Vfb=3.2V, Vvh=141V
FA5640,FA5641
Vfb=3.2V, Vvh=324V
0.47
0.5
0.53
V
0.42
0.45
0.48
V
Voltage gain
Minimum ON pulse width
Delay to output
AvIS
Tonmin
TpdIS
ΔVfb/ΔVis
Vfb=3.2V,Vis=1.5V
IS input: 0V to 1.5V
(Pulse signal)
5.4
6.0
205
290
30
70
6.6
V/V
375
ns
150
ns
Feedback part (FB pin)
Item
Input threshold voltage of
stopping on-pulse
FB pin input resistance
FB pin source current
FB pin input resistance ratio
Symbol
VthFB01
VthFB02
Rfb11
Rfb12
Rfb21
Rfb22
Ifb0
⊿Rfb1
⊿Rfb2
Conditions
DUTY=0%
Vvh=141V
FA5640,FA5641
DUTY=0%
Vvh=324V
Vfb=1V to 2V
Vvh=141V
Vfb=1V to 2V
Vvh=324V
Vfb=0V to 0.3V
Vvh=141V
Vfb=0V to 0.3V
Vvh=324V
Vfb=0V
⊿Rfb1=Rfb11/Rfb21
Vvh=141V
FA5640,FA5641
⊿Rfb2=Rfb12/Rfb22
Vvh=324V
MIN.
405
TYP.
450
MAX. Unit
495
mV
315
350
385
mV
14.2
18.9
23.6
kΩ
13.0
17.4
21.7
kΩ
15.5
20.7
25.9
kΩ
15.5
20.7
25.9
kΩ
-260
-200
-160
uA
89.3
91.3
93.3
%
82.1
84.1
86.1
%
Fuji Electric Co., Ltd.
AN-064E Rev.1.1
April 2011
8
http://www.fujielectric.co.jp/products/semiconductor/