ROHM BP5055-12

Data Sheet
220VAC Input/−12VDC (250mA) Output
Non-Isolated AC/DC Converter
BP5055-12
Absolute Maximum Ratings
Dimensions (Unit : mm)
Unit
V
C
C
Case temperature
Tcmax
105
C
Output current
Iomax 1
Iomax 2
250
130
mA
mA
DC
Refer to derating curve
Ambient temperature +
the module self-heating Tcmax
PEAK value of current (Vi= to −420V)
PEAK value of current (Vi=−420 to−600V)
3.25MAX.
0.07
0.05
0.08
77
Unit
V
V
mA
mA
V
V
Vp-p
%
Conditions
Vi=−240V to −420V
Vi=−420V to −600V
Vi=−240V to −600V lo=130mA
lo=0 to 250mA
Application Circuit
Pin No.
1
2
3
4
5
6
7
8
9
10
BP5055-12
Vi
~
ZNR
+
+
4
6
10
FUSE
C1
C2
8
A
L1
C4
D1
C3
+
V
Function
Input terminal : Vi(-311VDC)
Skip
Skip
COMMON
Skip
Power inductor terminal
Skip
Power inductor terminal
Skip
Output terminal : Vo(-12.7VDC)
Be sure to use fuse for safety.
External Component Specifications
C3: Output capacitor
4.35MAX.
Use a quick-acting fuse (1A)
above 450V, 22 to 100µF
Ripple current 0.7Arms or greater
above 30V, 220 to 1000µF, low impedance
ESR:0.18Ω Max.
Ripple current 0.65Arms or higher
Capacitor impedance affects the output ripple voltage.
Derating Curve
300
250
Vi=−240V to −420V
200
150
Vi=−420V to −600V
100
50
0
-20 -10 0 10 20 30 40 50 60 70
Ambient Temperature Ta( C)
80 90
Conversion Efficiency
100
90
80
70
60
50
40
30
20
10
0
0
Conversion Efficiency
(Ta=25 C, Vi=-311V)
50
100
150
200
Output Current Io(mA)
250
Load Regulation
Vo
Please verify operation and characteristics in the customer's circuit before actual usage.
Ensure that the load current does not exceed the maximum rating.
FUSE: fuse
C1, C2: Input capacitor
Output Current Io(mA)
Max.
−600
−13.4
250
130
0.25
0.20
0.20
Conversion Efficiency (%)
Typ.
−311
−12.7
Output Voltage -Vo(V)
Parameter
Symbol Min.
−240
Input voltage range
−12.0
Output voltage
Output current1
lo1
Output current2
lo2
Line regulation
Load regulation
Output ripple voltage
Conversion efficiency
70
R1
0.25+0.05
5.55MAX.
P=5.08+ 0.2
Derating Curve
Electrical Characteristics
D2
0.5+0.1
1.3 +0.2
2.54x9=22.86TYP.
(Unless otherwise specified Ta=25°C, Vi=−311V, IO=250mA)
1
9.9MAX.
28.2MAX.
Conditions
Marking Side
Limits
−600
−20 to 80
−25 to 105
21.5MAX.
Symbol
Vi
Topr
Tstg
4.0 +1.0
Parameter
Input voltage
Operating temperature range
Storage temperature range
−13.5
−13.3
−13.1
−12.9
−12.7
−12.5
−12.3
−12.1
−11.9
−11.7
−11.5
−200 −250 −300 −350 −400 −450 −500 −550 −600 −650
Input Voltage Vi(V)
Surface Temperature Increase
Surface Temperature Increase
40
35
30
25
20
15
10
5
0
0
C4: Noise reduction
capacitor
Above 600V, 0.1 to 0.22µF
Film or ceramic capacitor. Evaluate under actual operating conditions.
L1: Power inductor
Inductance:1.0mH, Rating current: above 0.74A
Select components that do not easily get magnetically saturated at high temperature.
Recommended part : C13-FR 1.0mH (MITSUMI)
D1: Flywheel diode
Output Current Io(mA)
Above 1000V, current: above 1.0A
Fast recovery diode
Please note that both the switching and efficiency characteristics of the module are affected by this diode.
Recommended products: UF4007 (VISHAY)
Use a rectifying diode with a peak reverse voltage of 1kV or higher, an average rectification current of 1A or larger and a peak surge
current of 20A or larger. When using a large capacitance input capacitor, select a component that endures the is strong
against inrush current during power up. Full-wave rectification can be used.
D2: Rectifier diode
R1: Noise reduction resistor
10 to 22Ω, 1W
Determine the ideal value through actual testing.
ZNR: Varistor
A varistor is required to protect against lightning surges and static electricity.
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