SPC-54/4.4-L12PG-C www.murata-ps.com 240W PoE+ Regulated Converter 11-13.2Vin, 54.2V/4.44A Single Output, High Efficiency SIP Converter ORDERING GUIDE SUMMARY Model Vout Range Iout Range Vin Range Ripple/Noise Efficiency 54.2V 0-4.44A 11-13.2V 500mVp-p (max) 94% SPC-54/4.4-L12PG-C INPUT CHARACTERISTICS Parameter Typ. @ 25°C, full load Notes 11-13.2 Volts 12V nominal 24.5 Amps Vin = 11V Voltage Range Current, full power Typical unit Turn On/Start-up Threshold Undervoltage Shutdown No Load Current FEATURES 10.3-11 Volts Vin increasing 9-9.9 Volts Vin decreasing 300mA Vin = 12V OUTPUT CHARACTERISTICS 240 Watts total output power Parameter Typ. @ 25°C, full load Notes 94% Ultra-high efficiency @ full load, 100LFM Voltage 54.2 Volts ±1% 12V Input (11-13.2V range) Current 0 to 4.44 Amps No minimum load 54.2V/4.44A Output for PoE+ (Power-over-Ethernet) Input Over/Under Voltage Shutdown Power Output 240 Watts Ripple & Noise 500mVp-p 320kHz fixed switching frequency Line and Load Regulation ±1%/±1% Overcurrent Protection 5.33 Amps Fully isolated, 2250V (BASIC) Low 500mVp-p ripple/noise max value. PGOOD signal Overtemperature Protection 130 °C Efficiency (minimum) 92.8% Efficiency (typical) Stable no-load operation 20MHz bandwidth, 100μF output capacitance With hiccup auto-restart 80% load, Vin nom. 94% GENERAL SPECIFICATIONS Thermal shutdown Parameter Fully I/O protected Dynamic Load Response UL 1950/IEC/EN60950 certification Operating Ambient Temperature Output over voltage latch Safety Features Typ. @ 25°C, full load Notes 500μsec 50-75-50% step to 1% of Vout –40 to +80°C UL 1950, IEC/EN60950 PHYSICAL SPECIFICATIONS Parameter Inches Millimeters Dimensions 2.60 x 0.69 x 1.25 66.0 x 17.5 x 31.75 PERFORMANCE SPECIFICATIONS AND ORDERING GUIDE Output Model SPC-54/4.4-L12PG-C Input VOUT (Volts) IOUT (Amps, Max.) Power R/N (mV pk-pk) (Watts) Max. Line Load 54.2 4.44 240 500 ±1% ±1% Regulation (Max.) Efficiency 80% load, Vin nom. VIN Nom. (Volts) Range (Volts) IIN, no load (mA) Vin @ min, full load (Amps) % Min. % Typ. 12 11-13.2 300 24.5 92.8 94 Package (Pinout) See mechanical drawing For full details go to www.murata-ps.com/rohs www.murata-ps.com/support MDC_SPC-54/4.4-L12PG-C.A03 Page 1 of 13 SPC-54/4.4-L12PG-C 240W PoE+ Regulated Converter FUNCTIONAL SPECIFICATIONS ➀ ➁ ABSOLUTE MAXIMUM RATINGS Input Voltage, Continuous Isolation Voltage Input Reverse Polarity On/Off Remote Control Output Power Conditions Full power operation Input to output tested 100 mS None, install external fuse Power on or off, referred to -Vin Minimum 0 Typical/Nominal Maximum 13.2 2250 None 0 0 5 240 Units Vdc Vdc Vdc Vdc W Current-limited, no damage, 0 4.44 A short-circuit protected 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 nor recommended. INPUT Operating voltage range 11 12 13.2 Vdc Input Voltage Slew Rate 1 V/μs Turn On/Start-up threshold Rising input voltage 10.3 11 Vdc Turn Off/Undervoltage lockout Falling input voltage 9.2 9.9 Vdc Hysteresis 1 4 Vdc Overvoltage Shutdown 13.8 14.8 Vdc Reverse Polarity Protection None, install external fuse None Vdc Internal Filter Type Pi Input current Full Load Conditions Vin = nominal 22.5 A Low Line Vin = minimum 24.5 A Inrush Transient Peak Current 30 A I²t 0.1 A2/sec No Load Input Current Iout = minimum, unit = ON 300 500 mA Shut-Down Mode Input Current 10 mA The external input capacitance shall be the max Reflected (back) ripple current 0.1 Arms capacitance Back Ripple Current no filtering 2 Arms 250 750 μF Input Capacitance ➂ GENERAL and SAFETY 80% of Irated ≤ Iout ≤ 100% of Irated 92.8 94 % Efficiency (Ta = 25°C, 100 LFM, airflow 50% of Irated ≤ Iout < 80% of Irated 91.8 93.5 % across long axis, Vin = 12V) 20% of Irated 86.8 88.5 % 80% of Irated ≤ Iout ≤ 100% of Irated 92.8 94 % Efficiency (Ta = 80°C, 250 LFM, airflow 50% of Irated ≤ Iout < 80% of Irated 91.8 93.5 % across long axis, Vin = 12V) 20% of Irated 86.8 88.5 % Isolation Isolation Voltage Input to output, continuous 2250 Vdc Insulation Safety Rating basic Isolation Resistance 10 MΩ Isolation Capacitance 3300 pF Certified to UL-60950-1, CSA-C22.2 No.60950-1, Safety Yes IEC/EN60950-1, 2nd edition Per Telcordia SR332, issue 1 class 3, ground Calculated MTBF 1 Hours x 106 fixed, Tambient = +25˚C Service Life at 40°C ambient temperature 10 years with 80% load ESD Human Body Model (HBM) ± 2000 V Charged Device Model (CDM) ± 500 V Machine Model (MM) ± 200 V Output Current www.murata-ps.com/support MDC_SPC-54/4.4-L12PG-C.A03 Page 2 of 13 SPC-54/4.4-L12PG-C 240W PoE+ Regulated Converter FUNCTIONAL SPECIFICATIONS (CONT.) DYNAMIC CHARACTERISTICS Fixed Switching Frequency Startup Time Startup Time Turn-On/Turn-Off Turn-On Delay ➃ Output Voltage Rise Time ➄ Pre-Bias Voltage ➅ Turn-On Overshoot ➆ Turn-Off Undershoot ➇ Dynamic Load Response Dynamic Load Peak Deviation FEATURES and OPTIONS Remote On/Off Control Enable Logic, ON state Enable Logic, OFF state Control Pin Shutdown Current OUTPUT Total Output Power Voltage Nominal Output Voltage Setting Accuracy Current Output Current Range Minimum Load Current Limit Inception Short Circuit Short Circuit Duration (remove short for recovery) Short circuit protection method Regulation Line Regulation Load Regulation Ripple and Noise Temperature Coefficient Maximum Capacitive Loading Power Good Signal Characteristics ➈ ➉ Output Voltage for PGOOD triggering Power Good High State Voltage Power Good High State Current (into Pin) Power Good low State Voltage Power Good low State Current (into Pin) MECHANICAL Outline Dimensions Conditions Vin On to Vout regulated (100% resistive load) Remote ON to 10% Vout (50% resistive load) 30 30 Units KHz mS mS 1A/μS, 25% of full load change 1A/μS, 25% of full load change 30 80 100 2 0 800 ±1000 mS mS % % % μSec mV 5 0.8 0.5 V V mA Pin open = OFF Vin = 12V; Iout = 2.22A 98% of Vnom., after warmup Typical/Nominal 320 500 2 0 See Derating Maximum 240 W 53.658 -1 54.2 54.742 1 Vdc % of Vnom. 0 4.44 No minimum load 4.44 A 6.2 A ±1 ±1 % % 4.88 Output shorted to ground, no damage Hiccup Current limiting Vin = min. to max. Vout = nom. Iout = min. to max. Vin = nom. 20 MHz BW, with 0.1μF and 1μF ceramic capacitors, and 100μF output capacitance At all outputs Full resistive load Weight Through Hole Pin Diameter Through Hole Pin Material TH Pin Plating Metal and Thickness Minimum Nickel subplate Tin overplate 500 mV pk-pk 0 1620 % of Vnom./°C μF 50 55 5 10 0.8 2.5 V V μA V mA ±0.02 2.60x 0.69 x 1.25 66x 17.5 x 31.75 2.2 62 0.025*0.025 0.64*0.64 Copper alloy 3-7.6 2.54-7.6 Inches mm Ounces Grams Inches mm μm μm www.murata-ps.com/support MDC_SPC-54/4.4-L12PG-C.A03 Page 3 of 13 SPC-54/4.4-L12PG-C 240W PoE+ Regulated Converter FUNCTIONAL SPECIFICATIONS (CONT.) ENVIRONMENTAL Operating Ambient Temperature Range No Derating, Full Power, 100 LFM, Vertical mount Storage Temperature Vin = Zero (no power) Thermal Protection/Shutdown Available ariflow Io = 4.44A, Ta = 25°C Electromagnetic Interference (EMI) External filter required Conducted, EN55022/CISPR22 Radiated, EN55022/CISPR22 Relative humidity, Operating, non-condensing Relative humidity, Non-Operating, noncondensing Altitude (without output derating at 70°C) RoHS rating Notes ➀ ➁ ➂ ➃ Typical at TA = +25°C under nominal line voltage and nominal-load conditions, unless noted. Devices have no minimum-load requirements and will regulate under no-load conditions. External capacitance could be all ceramic or a mix of electrolytic and ceramic. a) Period between Vin connection and Vout rising to 10% of final value when Enable signal is existing, or b) Period between Enable signal connection and Vout rising to 10% of final value when Vin is existing. ➄ The output rise time measured from 10% of Vnom to the lower limit of the regulation band with 0% to 100% load and external cap. -40 -55 80 125 130 100 °C °C °C LFM B Class B Class % 10 90 5 95 % 4000 10,000 feet RoHS-6 ➅ ➆ ➇ ➈ The Power supply will start up normally and without any demage under a pre-bias output voltage. Tested under all loading conditions. Tested under all loading conditions. Pgood is referenced to Vin(-). An external pull-up resistor is connected between PGOOD pin and a bias voltage. A high signal shown in the pin represents the good status of the output voltage. ➉ Tested under full operating temperature and input voltage ranges. www.murata-ps.com/support MDC_SPC-54/4.4-L12PG-C.A03 Page 4 of 13 SPC-54/4.4-L12PG-C 240W PoE+ Regulated Converter PERFORMANCE DATA AND OSCILLOGRAMS Efficiency vs. Line Voltage and Load Current @ Ta = +25°C 100 95 90 VIN = 11V Efficiency (%) VIN = 12V 85 VIN = 13.2V 80 75 70 Load Current (A) Vin Startup Delay, Vin = 12V, Iout = 4.44A, Channel #3 = 5V/div - Vin, Channel #4 = 20V/div - Vout, Ta = 25°C, Cload = 100μF Vin Startup Delay, Vin = 12V, Iout = 0A, Channel #3 = 5V/div - Vin, Channel #4 = 20V/div - Vout, Ta = 25°C, Cload = 100μF Vin Startup Delay, Vin = 12V, Iout = 4.44A, Channel #3 = 5V/div - Vin, Channel #4 = 20V/div - Vout, Ta = 25°C, Cload = 1620μF Vin Startup Delay, Vin = 12V, Iout = 0A, Channel #3 = 5V/div - Vin, Channel #4 = 20V/div - Vout, Ta = 25°C, Cload = 1620μF www.murata-ps.com/support MDC_SPC-54/4.4-L12PG-C.A03 Page 5 of 13 SPC-54/4.4-L12PG-C 240W PoE+ Regulated Converter PERFORMANCE DATA AND OSCILLOGRAMS Output Ripple & Noise, Vin = 12V, Iout = 4.44A, Ta = 25°C, Cload = 100μf, BW = 20Mhz Output Ripple & Noise, Vin = 12V, Iout = 0A, Ta = 25°C, Cload = 100μf, BW = 20Mhz www.murata-ps.com/support MDC_SPC-54/4.4-L12PG-C.A03 Page 6 of 13 SPC-54/4.4-L12PG-C 240W PoE+ Regulated Converter PERFORMANCE DATA AND OSCILLOGRAMS Maximum Current Temperature Derating (Vin = 11V, airflow from Vout to Vin) Maximum Current Temperature Derating (Vin = 11V, airflow from Vin to Vout) 5 5 4 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) 2.5 m/s (500 LFM) 3.0 m/s (600 LFM) 3 Output Current (Amps) Output Current (Amps) 4 2 1 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) 2.5 m/s (500 LFM) 3.0 m/s (600 LFM) 3 2 1 0 0 30 35 40 45 50 55 60 65 70 75 80 85 30 35 40 45 Ambient Temperature (°C) 50 55 60 65 70 75 80 85 75 80 85 75 80 85 Ambient Temperature (°C) Maximum Current Temperature Derating (Vin = 12V, airflow from Vout to Vin) Maximum Current Temperature Derating (Vin = 12V, airflow from Vin to Vout) 5 5 4 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) 2.5 m/s (500 LFM) 3.0 m/s (600 LFM) 3 Output Current (Amps) Output Current (Amps) 4 2 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) 2.5 m/s (500 LFM) 3.0 m/s (600 LFM) 3 2 1 0 30 35 40 45 50 55 60 65 70 75 80 1 85 30 35 40 45 Ambient Temperature (°C) 5 4 4 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) 2.5 m/s (500 LFM) 3.0 m/s (600 LFM) Output Current (Amps) Output Current (Amps) 60 65 70 Maximum Current Temperature Derating (Vin = 13.2V, airflow from Vout to Vin) 5 2 55 Ambient Temperature (°C) Maximum Current Temperature Derating (Vin = 13.2V, airflow from Vin to Vout) 3 50 1 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) 2.5 m/s (500 LFM) 3.0 m/s (600 LFM) 3 2 1 0 0 30 35 40 45 50 55 60 65 Ambient Temperature (°C) 70 75 80 85 30 35 40 45 50 55 60 65 70 Ambient Temperature (°C) www.murata-ps.com/support MDC_SPC-54/4.4-L12PG-C.A03 Page 7 of 13 SPC-54/4.4-L12PG-C 240W PoE+ Regulated Converter MECHANICAL SPECIFICATIONS 0.110 (2.79) Inches (mm) 0.055 (1.39) 0.270 (6.86) 0.100 (2.54) 1.300 (33.02) 2.49 (63.2) 2.6 (66.0) 0.350 0.300 (8.89) (7.62) 0.100 (2.54) PIN 14 PIN 15 INPUT/OUTPUT CONNECTIONS Pin Function 0.35 (8.89) 0.69 (17.53) 0.05 (1.27) 0.205 (5.21) PIN 18 8PL TYP 1 PIN 1 0.070 (1.78) 0.205 (5.21) 0.350 18x 0.045 (1.14) (8.89) 2.49 (63.2) 2.64 (67.06) 0.270 (6.86) 0.075 (1.91) Dimensions are in inches (mm shown for ref. only). Third Angle Projection 0.050 (1.27) 0.025 (0.64) 0.045 Recommended Footprint PIN 19 0.115 ±0.010 (2.92±0.254) 1.25 (31.8) 0.69 (17.53) Max 0.354 (8.99) Max PIN 20 2x 0.125 (3.18) 1 THOT1_MCU(+) 2 THOT2_MCU(-) 3 PGOOD 4 Enable 5 Vin(-) 6 Vin(-) 7 Vin(-) 8 Vin(-) 9 Vin(-) 10 Vin(+) 11 Vin(+) 12 Vin(+) 13 Vin(+) 14 Vin(+) 15 -54VOut 16 -54VOut 17 -54V RTN 18 -54V RTN 19 SUPPORT#1 20 SUPPORT#2 Tolerances (unless otherwise specified): .XX ± 0.02 (0.5) .XXX ± 0.010 (0.25) Angles ± 2˚ Components are shown for reference only. www.murata-ps.com/support MDC_SPC-54/4.4-L12PG-C.A03 Page 8 of 13 SPC-54/4.4-L12PG-C 240W PoE+ Regulated Converter SHIPPING TRAYS AND BOXES PS Solu tion OBSE s ATTE NT RVE PREC SEN ELECTR AUTIONS SIT IVEDEVOSTATICFOR HAND ING ICE S ION Two boxes per carton, each containing 4 trays with 10 pcs per tray MOQ = 80 pcs 50 (3 8 13 ) 20 (3 .7 .6 ) 12 Dimensions are in inches (mm shown for ref. only). Third Angle Projection 11.42 (290) 10. 8) 16 10. 94 (25 (27 8) Components are shown for reference only. m Mu uR rata a at Pow e Tolerances (unless otherwise specified): .XX ± 0.02 (0.5) .XXX ± 0.010 (0.25) Angles ± 2˚ PS r So lutio ns NSI R ON SE TI FO C NS TI ES TIO TA C AU OS I TR DEV EC VE EL TI EC PR EN E RV SE OB T AT G IN ND HA 4.33 (110) Inches (mm) www.murata-ps.com/support MDC_SPC-54/4.4-L12PG-C.A03 Page 9 of 13 SPC-54/4.4-L12PG-C 240W PoE+ Regulated Converter Technical Notes I/O Filtering and Noise Reduction The SPC is tested and specified with external output capacitors. These capacitors are necessary to accommodate our test equipment and may not be required to achieve desired performance in your application. The SPC is designed with high-quality, high-performance internal I/O caps, and will operate within spec in most applications with no additional external components. In particular, the SPC input capacitors are specified for low ESR and are fully rated to handle the units' input ripple currents. Similarly, the internal output capacitors are specified for low ESR and full-range frequency response. In critical applications, input/output ripple/noise may be further reduced using filtering techniques, the simplest being the installation of external I/O caps. External input capacitors serve primarily as energy-storage devices. They minimize high-frequency variations in input voltage (usually caused by IR drops in conductors leading to the DC/DC) as the switching converter draws pulses of current. Input capacitors should be selected for bulk capacitance (at appropriate frequencies), low ESR, and high rms-ripple-current ratings. The switching nature of modern DC/DC's requires that the dc input voltage source have low ac impedance at the frequencies of interest. Highly inductive source impedances can greatly affect system stability. Your specific system configuration may necessitate additional considerations. Input Fusing Most applications and or safety agencies require the installation of fuses at the inputs of power conversion components. The SPC Series may have an optional input fuse. Therefore, if input fusing is mandatory, either a normalblow or a fast-blow fuse with a value no greater than twice the maximum input current should be installed within the ungrounded input path to the converter. Input Overvoltage and Reverse-Polarity Protection The SPC does not incorporate input reverse-polarity protection. Input voltages in excess of the specified absolute maximum ratings and input polarity reversals of longer than "instantaneous" duration can cause permanent damage to these devices. Start-Up Time The VIN to VOUT Start-Up Time is the interval between the time at which a rising input voltage crosses the lower limit of the specified input voltage range TO OSCILLOSCOPE CURRENT PROBE VIN LBUS CBUS The On/Off to VOUT Start-Up Time assumes the converter is turned off via the On/Off Control with the nominal input voltage already applied to the converter. The specification defines the interval between the time at which the converter is turned on and the fully loaded output voltage enters and remains within its specified regulation band. Thermal Considerations and Thermal Protection The typical output-current thermal-derating curves shown below enable designers to determine how much current they can reliably derive from each model of the SPC under known ambient-temperature and air-flow conditions. Similarly, the curves indicate how much air flow is required to reliably deliver a specific output current at known temperatures. The highest temperatures in SPC's occur at their output inductor, whose heat is generated primarily by I 2 R losses. The derating curves were developed using thermocouples to monitor the inductor temperature and varying the load to keep that temperature below +110°C under the assorted conditions of air flow and air temperature. Once the temperature exceeds +125°C (approx.), the thermal protection will disable the converter using the hiccup shutdown mode. Undervoltage Shutdown When the input voltage falls below the undervoltage threshold, the converter will terminate its output. However, this is not a latching shutdown mode. As soon as the input voltage rises above the Start-Up Threshold, the converter will restore normal operation. This small amount of hysteresis prevents most uncommanded power cycling. Since some input sources with higher output impedance will increase their output voltage greater than this hysteresis as soon as the load is removed, it is possible for this undervoltage shutdown to cycle indefinitely. To prevent this, be sure that the input supply always has adequate voltage at full load. Thermal Shutdown Extended operation at excessive temperature will initiate overtemperature shutdown triggered by a temperature sensor inside the PWM controller. This operates similarly to overcurrent and short circuit mode. The inception point of the overtemperature condition depends on the average power delivered, the ambient temperature and the extent of forced cooling airflow. Remote On/Off Control +INPUT + and the fully loaded output voltage enters and remains within its specified regulation band. Actual measured times will vary with input source impedance, external input capacitance, and the slew rate and final value of the input voltage as it appears to the converter. CIN The SPC may be turned off or on using the external remote on/off control. This terminal consists of a digital input to the internal PWM controller through a protective resistor and diode. – COMMON CIN = 33µF, ESR < 700m7 @ 100kHz CBUS = 220µF, ESR < 100m7 @ 100kHz LBUS = 12µH The on/off input circuit should be CMOS logic referred to the –Input power terminal however TTL or TTL-LS logic will also work or a switch to ground. If preferred, you can even run this using a bipolar transistor in “open collector” configuration or an “open drain” FET transistor. Figure 1. Measuring Input Ripple Current www.murata-ps.com/support MDC_SPC-54/4.4-L12PG-C.A03 Page 10 of 13 SPC-54/4.4-L12PG-C 240W PoE+ Regulated Converter Power Good Hottest Component Temperature Indicating Signal The power supply shall provide an open-drain/open-collector type circuit representing that the output voltage is within the required voltage band. An external pull-up resistor will be placed between the PGOOD pin and a bias voltage. The signal is referenced to the Vin(-). The signal shall go to the high state when output voltage reaches a typical value, and returns to the low state when the output voltage falls below 50V. The following schematic shall be implemented close to the hottest component. A signal type NPN transistor such as MMBT3904LT1, or a compatible part is recommended: The base-emitter voltage will change with a negative thermal coefficient over the temperature. The circuit connected to this device is referenced to the Vin(-). Vx 3.3 V ≤ Vx ≤ 5.0 V 2.0 kΩ ≤ R≤10.0 kΩ R Thot_MCU(+) I + IBC Thot_MCU(‐) V PGOOD Figure 3. Temperature sensing circuit Figure 2. External circuit configuration for PGOOD signal Soldering Guidelines 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). Your production environment may differ; therefore please thoroughly review these guidelines with your process engineers. Wave Solder Operations for through-hole mounted products (THMT) For Sn/Ag/Cu based solders: For Sn/Pb based solders: Maximum Preheat Temperature 115° C. Maximum Preheat Temperature 105° C. Maximum Pot Temperature 270° C. Maximum Pot Temperature 250° C. Maximum Solder Dwell Time 7 seconds Maximum Solder Dwell Time 6 seconds www.murata-ps.com/support MDC_SPC-54/4.4-L12PG-C.A03 Page 11 of 13 SPC-54/4.4-L12PG-C 240W PoE+ Regulated Converter Emissions Performance Murata Power Solutions measures its products for conducted emissions against the EN 55022 and CISPR 22 standards. Passive resistance loads are employed and the output is set to the maximum voltage. If you set up your own emissions testing, make sure the output load is rated at continuous power while doing the tests. [3] Conducted Emissions Test Results The recommended external input and output capacitors (if required) are included. Please refer to the fundamental switching frequency. All of this information is listed in the Product Specifications. An external discrete filter is installed and the circuit diagram is shown below. +12V Vin_P C1 330μ C2 10μ C3 100n 54V+ Vout_P 12/54V DC/DC Murata Power Solutions Vin_N 54V- Vout_N Graph 1. Conducted emissions performance, CISPR 22, Class B, full load 54V+ 54V+ POE S1 TX1 C5 2.2μ C8 2.2μ C9 100μ P1 C4 220μ 5mH 54V- C6 10n C7 10n 54V- POE C10 10n C11 10n [4] Layout Recommendations Most applications can use the filtering which is already installed inside the converter or with the addition of the recommended external capacitors. For greater emissions suppression, consider additional filter components and/or shielding. Emissions performance will depend on the user’s PC board layout, the chassis shielding environment and choice of external components. Please refer to Application Note GEAN-02 for further discussion. Since many factors affect both the amplitude and spectra of emissions, we recommend using an engineer who is experienced at emissions suppression. Figure 4. Conducted Emissions Test Circuit [1] Conducted Emissions Parts List Reference Part Number Description Aluminum Electrolytic Capacitor C1 EKZM250ESS331MHB5D 25V 330μF ±20% SMD CERAMIC 25V 10μF ±10% C2 GRM31CR71E106KA12 1206 SMD CERAMIC 25V 0.1μF ±10% C3 GRM219R71E104KA01 0805 Aluminum Electrolytic Capacitor C4 EKY-101ESS221MK25S 100V 220μF ±20% SMD CERAMIC 100V 2.2μF ±10% C5, C8 GRM31CR72A225KA73 1206 Ceramic capacitor CAP Y2/X1 CD C6, C7, C10, C11 DE2F3KY103MA3BM02 250VAC 2200pF M E VI 7.5 Aluminum Electrolytic Capacitor C9 EKY-101ESS101MK16S 100V 100μF ±20% EMI filter common choke CM C20200-13 minimum 5mH 8.9A Vendor NIPPON Chemicon MURATA MURATA NIPPON Chemicon MURATA MURATA NIPPON Chemicon ITGElectronics [2] Conducted Emissions Test Equipment Used Hewlett Packard HP8594L Spectrum Analyzer – S/N 3827A00153 2Line V-networks LS1-15V 50Ω/50Uh Line Impedance Stabilization Network www.murata-ps.com/support MDC_SPC-54/4.4-L12PG-C.A03 Page 12 of 13 SPC-54/4.4-L12PG-C 240W PoE+ Regulated Converter Vertical Wind Tunnel IR Transparent optical window Unit under test (UUT) Variable speed fan The IR camera can watch thermal characteristics of the Unit Under Test (UUT) with both dynamic loads and static steady-state conditions. A special optical port is used which is transparent to infrared wavelengths. The computer files from the IR camera can be studied for later analysis. IR Video Camera Heating element Precision low-rate anemometer 3” below UUT Ambient temperature sensor Airflow collimator Figure 4. Vertical Wind Tunnel Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. ISO 9001 and 14001 REGISTERED Murata Power Solutions employs a custom-designed enclosed vertical wind tunnel, infrared video camera system and test instrumentation for accurate airflow and heat dissipation analysis of power products. The system includes a precision low flow-rate anemometer, variable speed fan, power supply input and load controls, temperature gauges and adjustable heating element. Both through-hole and surface mount converters are soldered down to a host carrier board for realistic heat absorption and spreading. Both longitudinal and transverse airflow studies are possible by rotation of this carrier board since there are often significant differences in the heat dissipation in the two airflow directions. The combination of both adjustable airflow, adjustable ambient heat and adjustable Input/Output currents and voltages mean that a very wide range of measurement conditions can be studied. The airflow collimator mixes the heat from the heating element to make uniform temperature distribution. The collimator also reduces the amount of turbulence adjacent to the UUT by restoring laminar airflow. Such turbulence can change the effective heat transfer characteristics and give false readings. Excess turbulence removes more heat from some surfaces and less heat from others, possibly causing uneven overheating. Both sides of the UUT are studied since there are different thermal gradients on each side. The adjustable heating element and fan, built-in temperature gauges and no-contact IR camera mean that power supplies are tested in real-world conditions. This product is subject to the following operating requirements and the Life and Safety Critical Application Sales Policy: Refer to: http://www.murata-ps.com/requirements/ Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. © 2016 Murata Power Solutions, Inc. www.murata-ps.com/support MDC_SPC-54/4.4-L12PG-C.A03 Page 13 of 13