Data Sheet
100-230VAC Input/6W Output
Isolated AC/DC Converter
BP5725
Absolute Maximum Ratings
Parameter
7-pin input voltage
4-pin input voltage
7-pin input Current
Maximum power
Allowable maximum
surface temperature
Operating
temperature range
Storage temperature
range
Symbol
V
D
VG
I
D
Po
Tcmax
Topr
Tstg
Limits
800
45
400
6
105
−25
to +80
−25
to +105
Unit
V
Vpeak
mA
W
°C
°C
°C
Conditions
Dimensions (Unit :
mm
)
22.5MAX.
7.8MAX.
MARKING SIDE
4.0±1.0
Ambient temperature + module
self-heating
Tcmax
24.0MAX.
1 2 3 4 5
P=2.54±0.2
2.54X6=15.24TYP.
7
5.55MAX.
0.25±0.05
<In case of 12V output>
Electrical Characteristics
(Unless otherwise noted, Vi=311V, rated load Ta=25°C)
Output Power (W)
Parameter
Symbol
Output detection voltage Vod
Output current
Io
Line regulation
Load regulation
Output ripple voltage
Power conversion
efficiency
Vr
VI
Vp
η
Min.
−7.1
10
−
−
−
70
Typ.
−7.6
−
380
90
300
77
Max.
−8.1
500
500
200
500
−
Unit
V
mA
mV
mV
mVp-p
%
Conditions
Io=500mA
Refer to derating curve
Vi=119V to 405VDC
Io=500mA
Io=200mA to 500mA
∗1
Derating Curve
7
6
5
4
3
2
1
0
-30-20-10 0 10 20 30 40 50 60 70 80 90
Ambient Temperature Ta(
°C
)
Operation Range
∗1:
Pulse noise is not included.
Sample Application Circuit
Be sure to use fuse for safety.
Pin
No.
1
T1
2
C2
D1
D2
C4
C5
+
Vo
3
4
R4
GND
5
6
Name
Vod
Vod
Vi(-)
VG
Vs
NC
Function
This is the output
detection terminal.
This is the output
detection terminal.
This is the primary side
input minus terminal.
MOSFET, GATE driving
input terminal.
This is the start terminal.
Connect this via the external
resistor (720kΩ) to Vi (+).
This is the NC pin.
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.
Conversion Efficiency
Conversion Efficiency
η
(%)
100
80
60
40
20
0
0
50 100 150 100 250 300 350 400 450 500
Vi+
FUSE
ZNR
C6
FL1
D3
R2
R1
<In case of 12V output>
(Vi=311V, Ta=25°C)
Vi -
C1
+
R3
C3
+
Output Current Io(mA)
1 2 3 45
7
External Component Specifications
C1:
Input smoothing capacitor
C2:
Noise reduction capacitor
C3:
Vod smoothing capacitor
C4:
Output smoothing capacitor
C5:
Noise reduction capacitor
C6: Noise reduction capacitor
D1:
Rectifier diode
D2:
Rectifier diode
D3: Diode bridge
R1, R3:
Resistor
R2:
Resistor
R4: Bleeder resistor
T1:
Switching transformer
FL1:
Noise reduction filter
FUSE: Fuse
ZNR: Varistor
7
V
D
10µF/450V
Please verify operation and characteristics in
2200pF/1kV
the customer's circuit before actual usage.
Ensure that the load current does not exceed
10µF/50V
the maximum rating.
1000µF/25V
2200pF/AC250V
Use if necessary
Limiting element voltage DC630V or higher, 0.1 to 0.22µF
FRD 800V/0.5A
FRD 200V/1A
800V/1A
360kΩ±5% 0.25W
200kΩ±5% 1W
In case Io is less than 10mA, connect a bleeder resistor in parallel to C4.
Use if necessary
Be sure to use this for safety.
A varistor is required to protect against lightning surges and static electricity.
Load Regulation
<In case of 12V output>
(Vi=311V, Ta=25°C)
Output Voltage Vo(V)
18.0
16.0
14.0
12.0
10.0
8.0
6.0
4.0
2.0
0.0
Maximum Io=500mA
0
200
400
600
800
1000
1200
Output Current Io(mA)
Usage Precautions
When the capacitance of the output smoothing electrolytic capacitor C4 is made large the output may not rise.
100 to 2200µF is recommended. Set the rise time within 10ms.
Set the Vod electrolytic capacitor C3 to 10µF.
Be sure to use the VG terminal voltage within the operating voltage range.
Set the external starting resistor (R1+R3) to 720KΩ. Reducing the resistance value may cause failure during startup.
A built-in overcurrent protection circuit (reset type) prevents damage due to surge currents. Please discontinue
operation if protection circuit is continuously active.
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