BUS CONVERTER EUS25-096 Model Features: 9 48 Vin, Isolated, 5:1 Fixed Conversion Ratio 9 240 Watt Output at 48 Vin, 55 C, 200 LFM 9 175 Watt Output at 38 Vin, 55 C, 200 LFM 9 Industry Standard 1/8 Brick Footprint 9 Remote Enable (Primary Side, Positive or Negative) 9 Over-temperature and Over Current Protection 9 Direct Parallel Operation for Higher Power 9 RoHS Compliant Table 1 Input Characteristics Notes & Conditions Min Input Voltage Operating Range Input Voltage Absolute Maximum Input Undervoltage Lockout Input Overvoltage Lockout Maximum Input Current No-Load Input Current Disabled Input Current Input Reflected Ripple Current Inrush Current Transient Typ. 36 Turn-on Threshold Turn-off Threshold Hysteresis Voltage Turn-on Threshold Turn-off Threshold Hysteresis Voltage Steady-State (26 A out) Enabled state, no load (48 Vin) Disabled state (48 Vin) Note (9) Max 48 Units 55 60 36 35 34 32 2 55 56 58 59 2 6.4 50 6 50 0.2 Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Adc mA mA mA p-p 2 As Enable – Negative Logic Version Internal 10 K pull-up to 5 V. On State range Off State range -0.1 2.4 0.8 5.0 Vdc Vdc Enable – Positive Logic Version Internal 100 K pull-down to GND. On State range Off State range 2.4 -0.1 5.0 0.8 Vdc Vdc Table 2 Output Characteristics Notes & Conditions Output Voltage Set Point (Vo=Vin/5 +0/-0.5%) Output Load Regulation Output Voltage Total Regulation Vin = 48.0 V, Io = 0 A Io = 0 to 25 A Vin = 38 to 55 V, Io = 0 to 25 A, Vin = 42 to 53 V, Io = 0 to 25 A, 20 MHz Bandwidth Output Ripple Voltage & Noise Output Current Operating Range Output Current Share Accuracy Efficiency Turn-On Time Start-up Inhibit Time Transient Response Min Typ. 9.40 9.60 0.5 6.60 7.80 90 0 Percent deviation from ideal (8) Vin = 48 V, Io = 25 A Vin present: Enable to 90% Vout Enabled: Vin applied to 90% Vout 25% step, 0.1A/μs, ΔVo Recovery Time Maximum Output Capacitance Max 9.80 11.20 10.7 150 25 < 10 95 10 120 160 100 3000 Units Vdc V Vdc Vdc mV p-p A % % mS mS mV μs μF Technical enquiries email: [email protected], tel: +508 339 3000 1 EUS25-096 6200911514_B01 18/04/08 Murata Power Solutions BUS CONVERTER EUS25-096 Model Table 3 Protection Characteristics Notes & Conditions Min Typ. Max Units Output Over-Current Shutdown Non-Latching Re-start rate Non-Latching 27 30 60 125 10 33 A msec °C °C General Specifications Notes & Conditions Min Isolation Voltage Isolation Resistance Storage Temperature Range Operating Temperature Range Thermal Measurement Location Temperature Material Flammability MTBF Input to Output Input to Output Non-condensing Ambient See mechanical drawing for TML location UL 94V-0 Calculated (Bellcore TR-332) Demonstrated 2.28”L x 0.9”W x 0.48”H (max) (57.9L x 22.9W x 12.19H mm max) 2250 10 -40 -40 Over Temperature Shutdown Over Temperature Restart Hysteresis 130 Table 4 Dimension Weight Typ. Max Units 125 100 120 Vdc Mohm °C °C °C 6 2.7 >2 x10 Hrs 6 x10 Hrs 30 grams Table 5 Standards Compliance Notes & Conditions (6) UL/CSA 60950 EN60950 Basic Insulation Certified by TUV Notes: (1) Vin = 48Vdc, Ta = 25 °C, Airflow = 200 LFM for all data unless otherwise noted. (2) Output Ripple Voltage and noise is specified when measured with a 10uF tantalum and a 1uF ceramic capacitor at the converter output pins. (3) (4) Transient response is specified without a capacitor at the output of the converter. Thermal shutdown is monitored at the Thermal Measurement Location (TML). See ‘Mechanical Information’ on page 3 for TML location. (5) See ‘Safety Considerations’ shown in Figure 1. (6) De-rating curves are conducted in a controlled environment. End application testing is required to ensure the Thermal Measurement Location temperature is below the maximum specified. (7) Recommended airflow direction is from pin 1 to pin 3, or 3 to 1 (transverse). (8) Current share accuracy is optimized when the source and load impedance presented to each converter is equal. (9) Input Reflected Ripple is specified when measured with a 12uH source inductance. Without an input filter inductor, input ripple is less than 1 Arms for an input filter capacitance rated 70 mohms esr 2 EUS25-096 6200911514_B01_18/04/08 Murata Power Solutions BUS CONVERTER EUS25-096 Model Mechanical Information Figure 1 Pin Assignment Table 6 Pin # Pin Name Function 1 Vi(+) Positive Input Voltage 2 En Input Enable / Disable 3 4 5 Vi(-) Vo(-) Vo(+) Negative Input Voltage Negative Output Voltage Positive Output Voltage Notes & Conditions Referenced to Vi(-). Positive Logic: Floating = Enabled Negative Logic: Floating = Disabled 3 EUS25-096 6200911514_B01_18/04/08 BUS CONVERTER Murata Power Solutions EUS25-096 Model Efficiency Curves EUS25 Efficiency (%) vs Iout (A) 98 97 96 Efficiency [%] 95 94 93 92 Vin=36V 91 Vin=48V 90 Vin=55V 89 88 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 22 24 26 28 Iout [Adc] Figure 2 Output Voltage vs. Current EUS25-096 Output vs. Current 11.0 10.5 10.0 Vout [V] 9.5 9.0 8.5 Vin=36V 8.0 Vin=48V 7.5 Vin=55V 7.0 6.5 6.0 0 2 4 6 8 10 12 14 16 18 20 Iout [Adc] Figure 3 4 EUS25-096 6200911514_B01_18/04/08 BUS CONVERTER Murata Power Solutions EUS25-096 Model Power Derating Curves, TTML=120C EUS25-096_Pout(W) vs. Tam b(C) and Airflow 42Vin, 120C, Parallel Airflow (IN to Out) EUS25-096_Pout(W) vs. Tam b(C) and Airflow 38Vin, 120C, Parallel Airflow (IN to Out) 200 180 160 140 120 100 80 60 40 20 0 220 200 180 160 140 120 100 80 60 40 20 0 400 LFM 300 LFM 200 LFM 100 LFM 40 45 50 55 60 65 70 75 80 85 90 100 LFM 45 50 55 60 65 70 75 80 85 90 85 90 EUS25-096_Pout(W) vs. Tam b(C) and Airflow 55Vin, 120C, Parallel Airflow (IN to Out) 280 260 240 220 200 180 160 140 120 100 80 60 40 20 0 400 LFM 300 LFM 200 LFM 100 LFM 45 200 LFM Figure 5 EUS25-096_Pout(W) vs. Tam b(C) and Airflow 48Vin, 120C, Parallel Airflow (IN to Out) 40 300 LFM 40 Figure 4 240 220 200 180 160 140 120 100 80 60 40 20 0 400 LFM 50 55 60 65 70 75 80 85 400 LFM 300 LFM 200 LFM 100 LFM 40 90 Figure 6 45 50 55 60 65 70 75 80 Figure 7 Output Power as a function of Ambient Temperature and Input Voltage EUS25-096_Pout(W) vs. Tam b(C) and Vin (V). 200 LFM, 120C, Parallel Airflow (IN to Out) 275 250 225 200 175 150 125 100 75 50 25 0 Vin = 55V Vin = 48V Vin = 42V Vin = 38V 40 45 50 55 60 65 70 75 80 85 90 Figure 8 5 EUS25-096 6200911514_B01_18/04/08 BUS CONVERTER Murata Power Solutions EUS25-096 Model Turn-on from Vin (Enable On) Turn-on from Enable (Vin present) ---TBD-- Figure 9 Ch1: Vin; Ch2: Vout Figure 10 Vin=48V, Io=22A, Co=3000uF ----TBD--- Ch2: Vout; Ch4: Enable Vin=48V, Io=22A, Co=3000uF Output Ripple/Noise Thermal Image 105.2°C ---TBD--SP03: 85.0 SP01: 78.7 SP04: 79.3 SP02: 80.8 AIRFLOW 32.2°C Figure 11 Vout @ 50 mV/div. Vin=48V, Io=25A, Co = 0 6 Figure 12 Vi=42 V, Iout=25 A, @ 25 C, 200 LFM EUS25-096 6200911514_B01_18/04/08 Murata Power Solutions BUS CONVERTER EUS25-096 Model Safety Considerations The EUS series of converters are certified to the standards listed in the ‘Standards Compliance’ section in the table above. If this product is built into information technology equipment, the installation must comply with the above standard. An external input fuse (10 A recommended), must be used to meet the above requirements. The output of the converter [Vo(+)/Vo(-)] is considered to remain within SELV limits when the input to the converter meets SELV or TNV2 requirements. The converters and materials meet UL 94V-0 flammability ratings. Figure 13 Ordering Information RoHS Compliant The EUS series of converters is in compliance with the European Union Directive 2002/95/EC (RoHS) with repsect to the following sustances: lead (Pb), mercury (Hg), cadmium (Cd), hexavalent chromium, polybrominated biphenyls (PBB) or polybrominated diphenyl ethers (PBDE). 7 EUS25-096 6200911514_B01_18/04/08