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AC80V to AC138V input, 18W output
Isolated AC/DC converter
BP5717
Data Sheet
2011.10 - Rev. A
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
Ambient Temperature Ta(°C)
Output Power (W)
Output Current Io (mA)
Output Current Io (mA)
Output Voltage Vo(V)
4.0±1.0
0.5±0.1
0.25±0.05
1.3±0.2
P=2.54±0.2
2.54X11=27.94TYP
.
Absolute Maximum Ratings
Parameter Symbol Limits Unit Conditions
12-pin input voltage VD
Parameter Symbol Min. Typ. Max. Unit Conditions
∗2
∗1
Line regulation
Vr −
2 200 mV
Vi=113V to 195VDC
Io=1500mA
Power conversion efficiency
η
82 87
−
%
480 V
12-pin input current ID 1 Apk
10-pin input voltage VH 400 V
7-pin input voltage VCC 30 V
(Ambient temperature + the module self-heating)≤Tcmax
113V to195VDC (about 80 to 138VAC)
1sec (between primary and secondary)
6-pin input current
Isozcd −2.0
mA
Isizcd
+3.0 mA
1-pin input current
Ipc
10 mA
Maximum power
Po
18 W
Withstanding voltage
VI
2.5 kV
Allowable maximum surface temperature
Tcmax
105 °C
Operating temperature range
Topr
−25 to +80 °C
Storage temperature range
Tstg
−30 to +105 °C
Output voltage
Vo 11.4 12.0 12.6 V
Io=1500mA
Io=1500mA
Io=1500mA
Output current
Io 0
−
1500 mA
Load regulation VI − 5 200 mV Io=50 to 1500mA
Output ripple voltage Vp − 55 500 mVpp
∗1: Maximum output current must be reduced by ambient temperature.
∗2: An output ripple voltage sometimes changes in capacitor to use, the measurement environment.
Especially right attention has to be paid to aluminum electrolytic capacitor,because ESR changes greatly
at the time of the low temperature and output voltages increase.
PC
Vo
GND
ZCD
External Component Settings
C1,C2: EMI Capacitor for AC Line 0.1 to 0.22µF/AC250V
C3: Input smoothing capacitor 47µF / 250V
C4: Vcc smoothing capacitor 10µF / 50V low impedance
C5: Noise reduction capacitor 2200pF / 1kV
C6: Quasi-resonance capacitor Use if necessary
C7: Output smoothing capacitor 1000µF / 35V×2 low impedance, Rated ripple current 5.5Arms.
C8: Noise reduction capacitor 2200pF/AC250V
D1: Rectifier diode FRD 200V/0.5A
D2: Rectifier diode 600V/1A
D3: Rectifier diode 60V/20A
D4: Diode bridge 400V/1A
R1: Zero-Current Adjustment Resistor 47kΩ±1% 0.125W
R2: Snubber Resistor 200kW±5% 3Ω Rated at 300V or higher
R3: Output voltage setting resistor 69.2Ω (68kW + 1.2kW) ±1% 0.125W
R4: PC Current-Limiting Resistor 910Ω ±1% 0.125W
T1: Switching transformer -
F1: Fuse Be sure to use this for safety
FL1: EMI Filter for AC Line -
ZNR: Varistor Be sure to use this for safety
RTH: Thermistor Use if necessary
(Unless otherwise noted, Vi=141V, rated load Ta=25°C)
(Ta=25°C)
<12V output>
Pin
No.
Name
1
Function
Secondary-Side Photocoupler Current Supply Pin
2
Secondary Output Voltage Control Pin.
Connect the output smoothing capacitor between GND.
VD
12
Drain Pin for Internal FET.
Connect to the primary windings of
the external transformer.
3
GND Pin for Secondary Output
6 Zero-Current Adjustment Pin
Vcc
7 Internal Power Supply Pin
Vin(-)
8 Primary Input (Negative) Pin
VH
10 Startup Pin
C6
C8
F1
D3
D1
D2
D4
FL1
+
C7
+
C4
+
C3
C5
C2
C1
RTH
R1
R2
BP5717
Be sure to use fuse for safety.
12
3
6
10
12
8 7
R3 R4
12V 1.5A
ZNR
T1
37.4MAX
MARKING SIDE
1 2 3 6 7 8 10 12
9.3MAX
3.25MAX 2.25MAX. 7.05MAX.
24.3MAX
MARKING SIDE
0
2
4
6
8
10
12
14
16
18
20
-30 -20 -10 0 10 20 30 40 50 60 70 80 90
Operation Range
0
20
40
60
80
100
0 250 500 750 1000 1250 1500
(Vin=141V, Ta=25°C)
(Vin=141V, Ta=25°C)
0
2
4
6
8
10
12
14
16
0 500 1000 1500 2000 2500
(lo=1500mA, Ta=25°C)
11.4
11.6
11.8
12.0
12.2
12.4
12.6
100 120 140 160 180
200
Input voltage (V)
Output voltage (V)
Electrical Characteristics
Sample Application Circuit
Dimensions (Unit : mm)
Derating Curve
Conversion Efficiency
Load Regulation
Line Regulation
Conversion Efficiency η(%)
