Data Sheet
100-230VAC Input/24W Output
Isolated AC/DC Converter
BP5729
Absolute Maximum Ratings
Parameter
12-Pin input voltage
12-Pin input current
10-Pin input voltage
7-Pin input voltage
6-Pin input voltage
6-Pin input current
1-Pin input current
Maximum power
Withstanding voltage
Allowable maximum
surface temperature
Operating temperature range
Storage temperature range
Symbol
V
D
I
D
VH
V
CC
Vzcd
Isozcd
Isizcd
Ipc
Po
VI
Tcmax
Topr
Tstg
Limits
720
1
400
30
9.2
−2.0
+3.0
10
24
12
2.5
105
−25
to +80
−30
to +105
Unit
V
Apk
V
V
V
mA
mA
mA
W
W
kV
°C
°C
°C
Conditions
Dimensions (Unit : mm)
37.4MAX.
9.3MAX.
MARKING SIDE
24.3MAX.
MARKING SIDE
4.0±1.0
1 2 3
P=2.54±0.2
6
7
8
0.5±0.1
1.3±0.2
10
12
2.25MAX.
0.25±0.05
7.05MAX.
3.25MAX.
DC248 to DC372V
DC120 to DC372V
1s (primary - secondary)
Ambient temperature + The module
self-heating Tcmax
2.54X11=27.94TYP.
Derating Curve
27
24
Output Power (W)
21
18
15
12
9
6
3
0
-30-20-10 0 10 20 30 40 50 60 70 80 90 100
Ambient Current Ta(
°C
)
Vi=120V
to
248V
Vi=248V
to
372V
Electrical Characteristics
<In case of 12V output>
(Unless otherwise noted, Vi=311V, rated load Ta=25°C)
Parameter
Output voltage
Output current
Line regulation
Load regulation
Output ripple voltage
Power conversion efficiency
∗
Pulse noise is not included.
Symbol
Vo
Io
Vr
VI
Vp
η
Min.
11.4
0
−
−
−
82
Typ.
12.0
−
13
20
0.16
90
C8
Max.
12.6
2000
200
200
0.5
−
Unit
V
mA
mV
mV
Vp-p
%
Switching Frequency fsw (kHz)
Conditions
Io=2000mA
Refer to derating curve
Vi=120 to 372V DC
Io=1000mA
Io=50 to 2000mA
∗
Io=2000mA
Switching Freguency
120
100
Burst Switching
<In case of 12V output>
(Ta=25°C)
80
60
40
Burst Switching
Vi=311V
Vi=141V
Sample Application Circuit
Be sure to use fuse for safety.
D3
C5
D2
R3
R4
+
C7
F1
FL1
D4
C2
C1
+
C3
C6
R2
20
0
0
200 400 600
800 1000 1200 1400 1600 1800 2000
ZNR
D1
+
C4
R1
T1
Output Current Io(mA)
Pin
No.
1
Name
PC
Vo
GND
ZCD
Vcc
Vi(-)
VH
Function
This is the secondary side
opto-coupler current control terminal.
Conversion Efficiency
<In case of 12V output>
(Ta=25°C)
Conversion Efficiency
η
(%)
100
90
80
70
60
50
40
30
20
10
0
0 200 400 600 800 1000 1200 1400 1600 1800 2000
12
10
8
7
6
3
2
1
2
3
6
7
8
10
This is the secondary side output voltage
control terminal. Insert the output
smoothing capacitor between GND.
This is the GND terminal for the secondary side.
This is the zero current control terminal.
This is the internal circuit power supply terminal.
This is the primary side input minus terminal.
This is the start teminal.
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.
Vi=141V
Vi=311V
12
V
D
Output Current Io (mA)
BP5729
Output Voltage Vo(V)
External Components Specifications
C1,C2: Noise reduction capacitors
Input smoothing capacitor
C3:
Vcc smoothing capacitor
C4:
Noise reduction capacitor
C5:
Quasi-resonance capacitor
C6:
Output smoothing capacitor
C7:
C8:
D1:
D2:
D3:
D4:
R1:
R2:
R3:
R4:
T1:
F1:
FL1:
ZNR:
Noise reduction capacitor
Rectifier diode
Rectifier diode
Rectifier diode
Diode bridge
Resistor
Resistor
Output voltage setting resistor
Resistor
Switching transformer
Fuse
AC line filter
Varistor
Load Regulation
<In case of 12V output>
(Ta=25°C)
14.0
12.0
10.0
8.0
6.0
4.0
2.0
0.0
Maximum
Maximum
Io=2000mA
Io=1000mA
(Vi=120
to
248V) (Vi=248
to
372V)
Surface Temperature Increase
∆
T(°C)
Limiting element voltage AC250V or higher, 0.1 to 0.22µF
33µF / 450V General purpose type
10µF / 50V Low impedance type
2200pF / 630V
Use if necessary
1000µF / 35V x 2 Low impedance type
Rated ripple current 4.5Arms or higher ESR 18mΩ or below
2200pF / AC250V
FRD 200V / 0.5A
800V / 0.5A
60V / 20A
800V / 1A
47kΩ
±1%
0.1W
100kΩ
±5%
3W Limiting element voltage 300V or higher
68kΩ
±1%
0.1W
910Ω
±1%
0.1W
Be sure to use this for safety
A varistor is required to protect against lightning surges and static
electricity.
Vi=141V
Vi=311V
0
500 1000 1500 2000 2500 3000 3500 4000
Output Current Io (mA)
Surface Temperature Increase
<In case of 12V output>
(Ta=25°C)
40
35
30
25
20
15
10
5
0
0 200 400 600 800 1000 1200 1400 1600 1800 2000
Vi=141V
Vi=311V
Usage Precautions
This product has built-in over current (reset type) and over voltage (latch type) protection functions to prevent
destruction due to surges. Discontinue operation if protection circuits are continuously active.
Output Current Io (mA)
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