Isolated AC/DC Converter
AC 100 to AC230V input, 24W output
BP5729
Absolute Maximum Ratings
Dimensions (mm)
9.3MAX.
Parameter
Symbol
Limits
720
1
400
30
Unit
V
Apk
V
Conditions
37.4MAX.
12-Pin input voltage
12-Pin input current
10-Pin input voltage
7-Pin input voltage
VD
ID
VH
VCC
MARKING SIDE
V
6-Pin input voltage
6-Pin input current
1-Pin input current
Maximum power
Vzcd
Isozcd
Isizcd
Ipc
9.2
−2.0
+3.0
10
24
12
V
mA
mA
mA
W
W
kV
0.25±0.05
7.05MAX.
1
2
3
6
7
12
8
10
2.25MAX.
0.5±0.1
1.3±0.2
3.25MAX.
P=2.54±0.2
2.54X11=27.94TYP.
DC248V to DC372V
DC120V to DC372V
1s (primary - secondary)
Ambient temperature + The module
self-heating Tcmax
Po
VI
Withstanding voltage
2.5
Allowable maximum
surface temperature
Tcmax
105
°C
Derating Curve
27
Operating temperature range
Storage temperature range
Topr
Tstg
−25 to +80
−30 to +105
°C
°C
24
21
18
15
12
9
Vi=248V to 372V
Electrical Characteristics
<In case of 12V output>
(Unless otherwise noted, Vi=311V, rated load Ta=25°C)
Vi=120V to 248V
6
Parameter
Output voltage
Output current
Symbol
Vo
Io
Min.
11.4
0
Typ.
12.0
−
Max.
12.6
2000
Unit
V
mA
Conditions
Io=2000mA
Refer to derating curve
3
0
-30-20-10 0 10 20 30 40 50 60 70 80 90100
Ambient Current Ta(°C)
Vi=120 to 372VDC
Io=1000mA
Line regulation
Vr
−
13
200
mV
Switching Freguency
Load regulation
Output ripple voltage
VI
Vp
−
−
20
0.16
200
0.5
mV
Vp-p
Io=50 to 2000mA
<In case of 12V output>
∗
(Ta=25°C)
120
Power conversion efficiency
η
82
90
−
%
Io=2000mA
100
∗ Pulse noise is not included.
Burst Switching
80
Vi=311V
Sample Application Circuit
Be sure to use fuse for safety.
12V , 2A
60
40
20
0
Vi=141V
C8
D3
Burst Switching
F1
+
FL1
C5
D2
C7
R2
D4
C2
R3 R4
0
200 400 600 800 1000 1200 1400 1600 1800 2000
Output Current Io(mA)
ZNR
C1
+
D1
Conversion Efficiency
C3
+
C6
C4
R1
<In case of 12V output>
Pin
No.
(Ta=25°C)
Name
PC
Function
100
T1
90
This is the secondary side
opto-coupler current control terminal.
1
Vi=311V
12 10
8
7
6
3
2
1
80
Vi=141V
70
60
50
40
30
20
10
0
This is the secondary side output voltage
control terminal. Insert the output
smoothing capacitor between GND.
Vo
2
This is the GND terminal for the secondary side.
This is the zero current control terminal.
3
6
GND
ZCD
7
8
10
Vcc
Vin(-)
VH
This is the internal circuit power supply terminal.
This is the primary side input minus terminal.
This is the start teminal.
0
200 400 600 800 1000 1200 14001600 1800 2000
Output Current Io (mA)
This is the built-in FET of drain terminal.
The primary coil minus side of the
external transformer, and the snubber
circuit for noise reduction are connected
to this.
12
VD
Load Regulation
BP5729
<In case of 12V output>
(Ta=25°C)
External Components Setting
C1,C2: Noise terminal voltage
countermeasure capacitor
14.0
12.0
10.0
8.0
Limiting element voltage AC250V or higher 0.1 to 0.22µF
Vi=141V
Vi=311V
33µF / 450V General purpose one
10µF / 50V Low impedance for power supply
2200pF / 630V
C3:
C4:
C5:
C6:
C7:
Capacitor for input voltage smoothing
Capacitor for Vcc voltage smoothing
For noise terminal voltage reduction
Capacitor for quasi-resonant
6.0
4.0
Maximum
Io=2000mA
(Vi=248 to 372V)
Maximum
Io=1000mA
(Vi=120 to 248V)
2.0
Please set it, if necessary
1000µF / 35V x 2 Low impedance for power supply
Rated ripple current 4.5Arms or higher ESR 18mΩ or below
2200pF / AC250V
0.0
0
500 1000 1500 2000 2500 3000 3500 4000
Output Current Io (mA)
Capacitor for output voltage smoothing
C8:
D1:
D2:
D3:
D4:
R1:
R2:
R3:
R4:
T1:
F1:
For noise terminal voltage reduction
Rectifier diode
Surface Temperature Increase
FRD 200V / 0.5A
<In case of 12V output>
Rectifier diode
800V / 0.5A
(Ta=25°C)
40
Rectifier diode
60V / 20A
35
30
25
Diode bridge
800V / 1A
Resistor
47kΩ ±1% 0.1W
100kΩ ±5% 3W Limiting element voltage 300V or higher
68kΩ ±1% 0.1W
20
Resistor
Vi=141V
15
Vi=311V
Resistor for output voltage setting
Resistor
10
5
910Ω ±1% 0.1W
0
Switching transformer
Fuse
0
200 400 600 800 1000 1200 1400 1600 1800 2000
Output Current Io (mA)
Be sure to use this for safety
FL1: AC line filter
ZNR: Varistor
Must be use. It protects this part from lightning surge and static electricity.
Precautions on use of products
This product has built-in over current (reset type) and over voltage (latch type) protection function to prevent destruction
at abrupt error. These protection functions are effective for prevention against destruction owing to abrupt accident,
therefore, avoid using them for continuous protection circuit operating, or at transition
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