Datasheet

ManualsBrandsMURATA POWER SOLUTIONS ManualsPSU ComponentsDC/DC converter (print) 54 V 3 A 162 W No. of outputs: 1 x

EMH-54/3-Q48N-C Series

Isolated, 54Vout, 3A, Ethernet Power

Half-Brick DC/DC Converters

MDC_EMH-54/3-Q48N-C.A05 Page 1 of 15

www.murata-ps.com

www.murata-ps.com/support

For full details go to

www.murata-ps.com/rohs

The EMH-54/3-Q48N-C module offers 54V output at 3

amps in a Half Brick footprint DC/DC power converter.

These compact modules measure 2.4˝ x 2.3˝ x 0.5˝

(61 x 58.4 x 12.7 mm) with baseplate and offer the

industry-standard Half-Brick footprint. The product is

designed to fully comply with RoHS-6 directive.

The modules offer wide range input voltage of

18-72V. The EMH topology offers high efﬁ ciency up

to 91.5%, good regulation, low ripple/noise, and a

fast dynamic load response. The module sup-

plies up to 162 Watts of power and isolation rated

at 2250V for basic insulation. EMH models are

designed for demanding telecom, POE (power over

Ethernet), datacom, and networking applications.

EMHs feature input ﬁ lters, input under voltage,

output current limiting, short-circuit protection, and

thermal shutdown.

PRODUCT OVERVIEW

Typical units

FEATURES



Industry-Standard “Half-Brick” footprint



162W output power @ 24-72Vin



Up to 91.5% Efﬁ ciency at 54V output (typical)



On/Off Control (Negative logic)



Monotonic startup into pre-bias output conditions



Over-current, Output & Over-temperature

protection



Low output ripple and noise



Strong thermal derating characteristics



Operational Temperature Range –40°C to +85°C

with baseplate



2250V I/O isolation



Output short-circuit protection (hiccup technique)

ical units

ORDERING GUIDE SUMMARY

Model Vout Range Iout Range Vin Range Ripple/Noise Efﬁ ciency

EMH-54/3-Q48 54V 0.2-3A 18-72V 250mVp-p 91.5%

INPUT CHARACTERISTICS

Parameter Typ. @ 25°C, full load Notes

Voltage Range 18-72 Volts 48V nominal

Input Current, full power 3.67 Amps VIN = 48V

Turn On/start-up threshold 17.5 Volts

Undervoltage Shutdown 17 Volts

No load Input Current 40mA VIN = 48V

OUTPUT CHARACTERISTICS

Parameter Typ. @ 25°C, full load Notes

Voltage 54 Volts ±2%

Current 0.2 to 3 Amps 0.2A min load required

Power Output 162 Watts

Ripple & Noise 250mVp-p 20MHz bandwidth

Line and Load Regulation ±0.125%/±0.2%

Overcurrent Protection 4 Amps With hiccup auto-restart

Overtemperature Protection +135°C

Efﬁ ciency (minimum) 89.5%

Efﬁ ciency (typical) 91.5%

GENERAL SPECIFICATIONS

Parameter Typ. @ 25°C, full load Notes

Dynamic Load Response 300sec 50-75-50% step to ±1 of ﬁ nal value

Operating Temperature Range –40 to +85°C With baseplate, see derating curve

Absolute Operating Temperature

Range

–40 to +105°C Measured at Thermistor, see derating

Safety Features

UL 60950-1, 2nd edition

CSA-C22.2 No.60950-1 and

IEC/EN60950-1

PHYSICAL SPECIFICATIONS

Parameter Inches Millimeters

Open frame (no baseplate) 2.4 x 2.3 x 0.43 61 x 58.4 x 10.92

With baseplate 2.4 X 2.3 X 0.5 61.0 x 58.4 x 12.7

Summary of content (15 pages)

PAGE 1
EMH-54/3-Q48N-C Series www.murata-ps.com Isolated, 54Vout, 3A, Ethernet Power Half-Brick DC/DC Converters ORDERING GUIDE SUMMARY Model Vout Range Iout Range Vin Range Ripple/Noise Efﬁciency 54V 0.2-3A 18-72V 250mVp-p 91.5% EMH-54/3-Q48 INPUT CHARACTERISTICS Parameter Typical units Typ. @ 25°C, full load Notes Voltage Range 18-72 Volts 48V nominal Input Current, full power 3.67 Amps VIN = 48V Turn On/start-up threshold 17.
PAGE 2
EMH-54/3-Q48N-C Series Isolated, 54Vout, 3A, Ethernet Power Half-Brick DC/DC Converters PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE Output Root Model ➀ EMH-54/3-Q48 Input VOUT (Volts) IOUT (Amps, Max.) (Watts) Typ. Max. Line Load VIN Nom. (Volts) 54 3 162 250 350 ±0.125% ±0.2% 48 Power R/N (mV pk-pk) Regulation (Max.) ➀Please refer to the full part number structure for additional ordering part numbers and options.
PAGE 3
EMH-54/3-Q48N-C Series Isolated, 54Vout, 3A, Ethernet Power Half-Brick DC/DC Converters FUNCTIONAL SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS Input Voltage, Continuous Isolation Voltage Input Reverse Polarity On/Off Remote Control Output Power Conditions ➀ Minimum Full power operation Input to output tested None, install external fuse Power on or off, referred to -Vin 0 Typical/Nominal Maximum Units 72 2250 Vdc Vdc Vdc Vdc W None 0 0 15 164.32 Current-limited, no damage, 0.
PAGE 4
EMH-54/3-Q48N-C Series Isolated, 54Vout, 3A, Ethernet Power Half-Brick DC/DC Converters FUNCTIONAL SPECIFICATIONS (CONT.
PAGE 5
EMH-54/3-Q48N-C Series Isolated, 54Vout, 3A, Ethernet Power Half-Brick DC/DC Converters TYPICAL PERFORMANCE DATA Maximum Current Temperature Derating vs. Airﬂow (Vin = 24V, airﬂow from from Pin 1 to Pin 4 on PCB, no Baseplate) 4 4 3 3 Output Current (Amps) Output Current (Amps) Maximum Current Temperature Derating vs. Airﬂow (Vin = 18, airﬂow from Pin 1 to Pin 4 on PCB, no Baseplate) 2 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) 1 2 0.
PAGE 6
EMH-54/3-Q48N-C Series Isolated, 54Vout, 3A, Ethernet Power Half-Brick DC/DC Converters TYPICAL PERFORMANCE DATA Maximum Current Temperature Derating vs. Airﬂow (Vin = 24V, airﬂow from from Pin 1 to Pin 4 on PCB, with baseplate) 4 4 3 3 Output Current (Amps) Output Current (Amps) Maximum Current Temperature Derating vs. Airﬂow (Vin = 18, airﬂow from Pin 1 to Pin 4 on PCB, with Baseplate) 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) 2 1 0.
PAGE 7
EMH-54/3-Q48N-C Series Isolated, 54Vout, 3A, Ethernet Power Half-Brick DC/DC Converters TYPICAL PERFORMANCE DATA Efﬁciency (%) Efﬁciency vs Line Voltage and Load Current @ +25°C 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 Startup Delay (Vin=48V, Iout=3A, Ta=+25°C) Trace 1=Vin, Trace 4=Vout. Vin = 18V Vin = 24V Vin = 36V Vin = 48V Vin = 60V Vin = 75V 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 2.
PAGE 8
EMH-54/3-Q48N-C Series Isolated, 54Vout, 3A, Ethernet Power Half-Brick DC/DC Converters TYPICAL PERFORMANCE DATA Thermal image with hot spot at 2.9A with 25°C ambient temperature. Natural convention is used with no forced airﬂow. Identiﬁable and recommended maximum value to be veriﬁed in application. Vin=48V, T3 and Q12 max temp=128°C/IPC9592 guidelines. www.murata-ps.com/support MDC_EMH-54/3-Q48N-C.
PAGE 9
EMH-54/3-Q48N-C Series Isolated, 54Vout, 3A, Ethernet Power Half-Brick DC/DC Converters MECHANICAL SPECIFICATIONS – OPEN FRAME 1.900 [48.26] MOUNTING PLANE (PIN SHOULDERS) 1 0.700 [17.78] CL 0.300 [7.62] 2.40 [60.96] 9 0.700 [17.78] 1.400 [35.56] 3 4 3x .040 PINS 1, 3 & 4 2.300 [58.42] SIDE VIEW TOP VIEW 5 2x .080 PINS 5 & 9 0.95 [24.1] CL BOTTOM VIEW 0.43 [10.92] END VIEW Dimensions are in inches (mm shown for ref. only). Third Angle Projection Tolerances (unless otherwise speciﬁed): .XX ± 0.
PAGE 10
EMH-54/3-Q48N-C Series Isolated, 54Vout, 3A, Ethernet Power Half-Brick DC/DC Converters MECHANICAL SPECIFICATIONS – WITH BASEPLATE [58.4] 2.30 Dimensions are in inches (mm shown for ref. only). Third Angle Projection [61.0] 2.40 2.000 [50.8] TOP VIEW Tolerances (unless otherwise speciﬁed): .XX ± 0.02 (0.5) .XXX ± 0.010 (0.25) Angles ± 2˚ 0.112-40-UNC-2B 0.25 MIN DEEP (4 PLS) Components are shown for reference only. 1.900 [48.26] ALUMINUM BASEPLATE END VIEW 0.015 [.381] MIN CLEARANCE [12.7±0.38] 0.
PAGE 11
EMH-54/3-Q48N-C Series Isolated, 54Vout, 3A, Ethernet Power Half-Brick DC/DC Converters RECOMMENDED FOOTPRINT TOP VIEW [2.32] 0.091 FINISHED HOLE SIZES @ PINS 1, 3 AND 4 (PER IPC-D-275, LEVEL C) 0.048-.062 (PRI) (SEC) 5 4 [2.42] 0.095 0.150MIN @5 & 9 FOR PIN SHOULDERS [0.700] 0.027 3 [7.62] 0.300 CL CL 0.100 MIN @ 1, 3, AND 4 FOR PIN SHOULDERS 1 9 FINISHED HOLE SIZES @ PINS 5 & 9 [0.950] 0.037 (PER IPC-D-275, LEVEL C) CL .088-.102 [48.26] 1.
PAGE 12
EMH-54/3-Q48N-C Series Isolated, 54Vout, 3A, Ethernet Power Half-Brick DC/DC Converters TECHNICAL NOTES Input Fusing Certain applications and/or safety agencies may require fuses at the inputs of power conversion components. Fuses should also be used when there is the possibility of sustained input voltage reversal which is not current-limited. For greatest safety, we recommend a fast blow fuse installed in the ungrounded input supply line.
PAGE 13
EMH-54/3-Q48N-C Series Isolated, 54Vout, 3A, Ethernet Power Half-Brick DC/DC Converters +OUTPUT 5 C1 -OUTPUT SCOPE RLOAD 9 C1 = 1μF CERAMIC LOAD 2-3 INCHES (51-76mm) FROM MODULE Figure 2. Measuring Output Ripple and Noise (PARD) Thermal Shutdown To prevent many over temperature problems and damage, these converters include thermal shutdown circuitry.
PAGE 14
EMH-54/3-Q48N-C Series Isolated, 54Vout, 3A, Ethernet Power Half-Brick DC/DC Converters Soldering Guidelines +VIN +VCC ON/OFF CONTROL Murata Power Solutions recommends the speciﬁcations below when installing these converters. These speciﬁcations vary depending on the solder type. Exceeding these speciﬁcations may cause damage to the product. Be cautious when there is high atmospheric humidity. We strongly recommend a mild pre-bake (100° C. for 30 minutes).
PAGE 15
EMH-54/3-Q48N-C Series Isolated, 54Vout, 3A, Ethernet Power Half-Brick DC/DC Converters IR Transparent optical window Unit under test (UUT) IR Video Camera Precision low-rate anemometer 3” below UUT Ambient temperature sensor Airﬂow collimator Vertical Wind Tunnel Murata Power Solutions employs a computer controlled custom-designed closed loop vertical wind tunnel, infrared video camera system, and test instrumentation for accurate airﬂow and heat dissipation analysis of power products.