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BPM15 Series
Encapsulated Isolated Wide Input Bipolar 15-Watt DC-DC Converters
FEATURES
Five-sided shielded metal package reduces
radiated emissions
Industry standard 1" x 1" x 0.40"
encapsulated package and pinout
Wide range input voltages 9-36 and
18-75 Vdc
Bipolar ±5V, ±12V and ±15V outputs
Up to 15 Watts or greater total output
power with overtemperature shutdown
Isolation up to 1600 VDC (basic)
High efficiency flyback topology
Usable -40 to 85°C temperature range
(with derating)
Assembly and attachment for RoHS standards
Extensive self-protection shut down
features
Meets UL 60950-1, CAN/CSA-C22.2 No.
60950-1, IEC60950-1, EN60950-1 safety
approvals (2nd Edition)
Typical unit
PRODUCT OVERVIEW
Featuring a full 15 Watt output in one square
inch of board area, the BPM15 series isolated
DC-DC converter family offers efficient regulated
DC power for printed circuit board mounting. The
wide range 4:1 inputs on the 1" x 1" x 0.40" (25.4
x 25.4 x 10.16mm) converter are either 9 to 36
Volts DC (Q12 models) or 18 to 75 Volts DC (Q48
models), ideal for battery-powered and telecom
equipment. The industry-standard pinout fits larger
1" x 2" converters. Fixed output voltages of ±5,
±12 or ±15 VDC are regulated to within ±0.25%.
Applications include small instruments, area-
limited microcontrollers, data communications
equipment, remote sensor systems, vehicle and
portable electronics.
The rugged mechanical, thermal, and electrical
design of this product is intended for high reliability
and harsh environments.
The BPM15 series includes full magnetic and
optical isolation with Basic protection up to 1600
Volts DC. For powering digital systems, the outputs
offer fast settling to step transients and will accept
higher capacitive loads. Excellent ripple and noise
specifications assure compatibility to noise-sus-
ceptible circuits. For systems requiring controlled
startup/shutdown, an external remote On/Off
control may use a switch, transistor or digital logic.
A wealth of self-protection features avoid both
converter and external circuit faults. These include
input undervoltage lockout and overtemperature
shutdown. The outputs current limit using the
“hiccup” autorestart technique and the outputs
are short-circuit protected. Additional features
include output overvoltage and reverse conduction
elimination. The high efficiency offers minimal heat
buildup and “no fan” operation.
CONNECTION DIAGRAM
F1 +Vin (1)
External
DC
Power
Source
On/Off
Control
(3)
Open = On
$MPTFE0GG
1PTJUJWF
MPHJD
-Vin (2)
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
Controller
and
Power
5SBOTGFS
*TPMBUJPO
Barrier
t4XJUDIJOH
t'JMUFST
t4XJUDIJOH
t'JMUFST
Reference and
Error Amplifier
+Vout (6)
Common (5)
-Vout (4)
Typical topology is shown.
Murata Power Solutions recommends a fuse at F1.
MDC_BPM15.A02 Page 1 of 29

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BPM15 Series
Encapsulated Isolated Wide Input Bipolar 15-Watt DC-DC Converters
PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE
Output
Root Models
R/N (mVp-p) Regulation (Max.)
IOUT Total
VOUT (mA, Power
(V) max.) (W) Typ. Max. Line Load
VIN
Nom.
(V)
Input
IIN =
minimum
Range load
(V) (mA)
BPM15-050-Q12 ±5 ±1500 15 60 100 ±0.25% ±0.25% 24 9-36 90
BPM15-050-Q48 ±5 ±1500 15 60 100 ±0.25% ±0.25% 48 18-75 50
BPM15-120-Q12 ±12 ±625 15 80 120 ±0.25% ±0.25% 24 9-36 95
BPM15-120-Q48 ±12 ±625 15 80 120 ±0.25% ±0.25% 48 18-75 50
BPM15-150-Q12 ±15 ±500 15 60 100 ±0.25% ±0.25% 24 9-36 100
BPM15-150-Q48 ±15 ±500 15 80 120 ±0.25% ±0.275% 48 18-75 50
IIN =
full
load
(mA)
740
384
740
368
740
360
Efficiency
Min. Typ.
82.5% 84%
80% 81.4%
82% 84%
83% 85%
82.5% 84.5%
83% 86%
Encapsulated
Package
(inches)
(mm)
1 x 1 x 0.40 25.4 x 25.4 x 10.16
Please refer to the part number structure for additional options and complete
ordering part numbers.
The minimum output load for the BPM15 series is 10% of maximum current to
meet published specifications. The converter will not be damaged by less than
10% load but some specs may degrade slightly.
All specifications are at nominal line voltage and full load, +25 °C. unless other-
wise noted. See detailed specifications and notes for full conditions.
Output capacitors are 1 μF ceramic in parallel with 10 μF. The input cap is 100 μF,
low ESR electrolytic.
I/O caps are necessary for our test equipment and may not be needed for your
application.
RoHS-6 compliance does not claim EU RoHS exemption 7b (lead in solder).
Balanced loads, 10% to 100% loads.
PART NUMBER STRUCTURE
BPM15 - 050 - Q48 P Lx - C
RoHS-6 Hazardous
Bipolar Wide Input
Substance Compliance (note 4)
15-Watt Series
Nominal Output Voltage
in Tenths of a Volt
Pin Length Option
Blank = Std. pin length 0.25˝ (6.3mm)
*L1 = 0.110˝ (2.79mm)
*L2 = 0.145˝ (3.68mm)
Input Voltage Range
Q12 = 9-36V
Q48 = 18-75V
On/Off Control Logic
P = Positive
N = Negative
Blank = Control pin omitted
*Minimum order quantity is required.
Samples available with standard pin
length only.
Some model number combinations may not
be available. See website or contact your local
Murata sales representative.
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MDC_BPM15.A02 Page 2 of 29

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BPM15 Series
Encapsulated Isolated Wide Input Bipolar 15-Watt DC-DC Converters
FUNCTIONAL SPECIFICATIONS, BPM15-050-Q12
ABSOLUTE MAXIMUM RATINGS
Conditions
Minimum
Typical/Nominal
Maximum
Units
Input Voltage, Continuous
0 36 Vdc
Input Voltage, Transient
100 mS max. duration
50 Vdc
Isolation Voltage
Input to output
1600 Vdc
On/Off Remote Control
Power on, referred to -Vin
0
15 Vdc
Output Power
1.48
15.15
W
Output Current
Current-limited, no damage, short-circuit
protected
0.15
1.5 A
Storage Temperature Range
Vin = Zero (no power)
-55
125 ˚C
Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other
than those listed in the Performance/Functional Specifications Table is not implied or recommended.
INPUT
Operating Voltage Range
9 24 36 Vdc
Recommended External Fuse
Fast blow
4A
Start-up Threshold
Rising input voltage
8 8.5 9 Vdc
Undervoltage Shutdown (50% load)
Falling input voltage
7.7 8.2 8.7 Vdc
Internal Filter Type
C
Input Current
Full Load Input Current
Vin = nominal
0.74 0.77 A
Low Line Input Current
Vin = minimum
2.03 2.09 A
Inrush Transient
0.05 A2-Sec.
Short Circuit Input Current
0.05 0.1 A
Minimum Load Input Current
Iout = minimum, unit = ON
90 150 mA
Shut-Down Input Current (Off, UV, OT)
1 2 mA
Reflected (Back) Ripple Current
Measured at input with specified filter
25
mA, p-p
GENERAL and SAFETY
Efficiency
Vin = 24V, full load
Vin = min., full load
82.5 84
80.5 82
%
%
Isolation
Isolation Voltage
Input to output
1600 Vdc
Isolation Resistance
10 MΩ
Isolation Capacitance
1000 pF
Safety
Certified to UL-60950-1, CSA-C22.2 No.
60950-1, IEC/60950-1, 2nd edition, with AM1
Approved
Calculated MTBF
Per Telcordia SR332, issue 1, class 3, ground
fixed, Tambient = +25°C
5.8
Hours x 106
DYNAMIC CHARACTERISTICS
Fixed Switching Frequency
330 360 390 KHz
Startup Time
Power on to Vout regulated
50 mS
Startup Time
Remote ON to Vout regulated
50 mS
Dynamic Load Response
50-75-50% load step, settling time to within
1% of Vout
250 300 μSec
Dynamic Load Peak Deviation
same as above
±100
±150
mV
FEATURES and OPTIONS
Remote On/Off Control
“N” suffix
Negative Logic, ON state
ON = Ground pin
-0.7
0.8 V
Negative Logic, OFF state
OFF = Pin open
10
15 V
Control Current
Open collector/drain
1 mA
“P” suffix
Positive Logic, ON state
ON = Pin open
10
15 V
Positive Logic, OFF state
OFF = Ground pin
-0.7
0.8 V
Control Current
Open collector/drain
1 mA
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MDC_BPM15.A02 Page 3 of 29

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BPM15 Series
Encapsulated Isolated Wide Input Bipolar 15-Watt DC-DC Converters
FUNCTIONAL SPECIFICATIONS, BPM15-050-Q12 (CONT.)
OUTPUT
Total Output Power
Voltage
Nominal Output Voltage
Setting Accuracy
Overvoltage Protection
Current
Output Current Range
Current Limit Inception
Short Circuit
Short Circuit Current
Short Circuit Duration (remove short
for recovery)
Short circuit protection method
Regulation
Line Regulation
Load Regulation
Ripple and Noise
Maximum Capacitive Loading
MECHANICAL
Outline Dimensions
(Please refer to outline drawing)
Weight
Conditions ➀ ➂
No trim
At 50% load, no trim
Via magnetic feedback
98% of Vnom., after warmup
Hiccup technique, autorecovery within
±1.25% of Vout
Output shorted to ground, no damage
Current limiting
Vin = min. to max., Vout = nom., Iout = nom.
Iout = min. to max., Vin = 24V
5 Hz - 20 MHz BW, Vin = 24V
Low ESR, 0.02 Ω max
WxLxH
Through Hole Pin Diameter
Through Hole Pin Material
TH Pin Plating Metal and Thickness
ENVIRONMENTAL
Operating Ambient Temperature Range
Operating Case Temperature Range
Case Material
Storage Temperature
Thermal Protection/Shutdown
Electromagnetic Interference
Conducted, EN55022/CISPR22
RoHS rating
Nickel subplate
Gold overplate
See derating
No derating
Tin plated steel with black powder coat
Vin = Zero (no power)
Measured in center
External filter is required
Minimum
1.48
±4.95
5.6
±0.15
±1.65
-40
-40
-55
120
Typical/Nominal
15
±5
±1
6.5
±1.5
±2.8
Continuous
60
1 x 1 x 0.40
25.4 x 25.4 x 10.16
0.69
19.56
0.04
1.016
Copper alloy
50
5
130
B
RoHS-6
Maximum
15.15
±5.05
7
±1.5
±3.3
0.3
±0.25
±0.25
100
520
85
93
125
140
Units
W
Vdc
% of Vnom
Vdc
A
A
A
% of Vout
% of Vout
mV pk-pk
μF
Inches
mm
Ounces
Grams
Inches
mm
μ-inches
μ-inches
°C
°C
°C
°C
Class
Notes
Unless otherwise noted, all specifications are at nominal input voltage, nominal output voltage and
full load. General conditions are +25˚ Celsius ambient temperature, near sea level altitude, natural
convection airflow. All models are tested and specified with external parallel 1 μF and 10 μF output
capacitors. The external input capacitor is 100 μF, electrolytic.
Input (back) ripple current is tested and specified over 5 Hz to 20 MHz bandwidth. Input filtering is
Cbus = 220 μF, Cin = 33 μF and Lbus = 12 μH.
The Remote On/Off Control is referred to -Vin.
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MDC_BPM15.A02 Page 4 of 29

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BPM15 Series
Encapsulated Isolated Wide Input Bipolar 15-Watt DC-DC Converters
PERFORMANCE DATA, BPM15-050-Q12
Efficiency vs. Line Voltage and Load Current @ +25°C
85
83
81
79
77
Vin=9V
75
Vin=12V
73
71 Vin=24V
69 Vin=36V
67
65
0.16 0.31 0.46 0.61 0.76 0.91 1.06 1.21 1.36 1.51
Load Curre nt (Amps)
Maximum Current Temperature Derating at Sea Level
(VIN = 9V, airflow is from pin 1 to pin 4)
1.5
1.4
1.3
1.2
0.33 m/s (65 LFM)
1.1
0.5 m/s (100 LFM)
1 1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
0.9
2.0 m/s (400 LFM)
0.8
0.7
0.6
0.5
30 35 40 45 50 55 60 65 70 75 80 85
Ambient Temperature (ºC)
Power Dissipation vs. Line Voltage and Load Current @ +25°C
3.5
3.0
2.5
2.0
1.5 Vin=9V
Vin=12V
1.0 Vin=24V
Vin=36V
0.5
0.0
0.16 0.31 0.46 0.61 0.76 0.91 1.06 1.21 1.36 1.51
Output Load Curre nt (Amps)
1.5
1.4
1.3
1.2
1.1
1
0.9
0.8
0.7
0.6
0.5
30
Maximum Current Temperature Derating at Sea Level
(VIN = 12V, airflow is from pin 1 to pin 4)
0.33 m/s (65 LFM)
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
35 40 45 50 55 60 65 70 75 80
Ambient Temperature (ºC)
85
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MDC_BPM15.A02 Page 5 of 29