Bus Converter EUS20-120 Model Features: 9 48 Vin, Isolated, 4:1 Fixed Conversion Ratio 9 250 Watt Output at 48 Vin, 55 C, 200 LFM 9 200 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 Input Voltage Operating Range Input Voltage Absolute Maximum Notes & Conditions Min 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 (10) 36 34 Enable – Negative Logic Version Internal 10 K pull-up to 5 V. On State range Off State range Enable – Positive Logic Version Internal 100 K pull-down to GND. On State range Off State range Input Undervoltage Lockout Input Overvoltage Lockout Maximum Input Current No-Load Input Current Disabled Input Current Input Reflected Ripple Current Inrush Current Transient Typ. 48 Max 55 60 37.5 35.5 57 58 Units Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Adc mA mA mA p-p 2 As -0.1 2.4 0.8 5.0 Vdc Vdc 2.4 -0.1 5.0 0.8 Vdc Vdc 2 55 56 2 6.4 98 6 25 0.2 Table 2 Output Characteristics Notes & Conditions Min Typ. Max Units Output Voltage Set Point (Vo=Vin/4 +0/-0.5%) Output Load Regulation Output Voltage Total Regulation Vin = 48.0 V, Io = 0 A Io = 0 to 20 A Vin = 36 to 55 V, Io = 0 to 20 A, Vin = 42 to 53 V, Io = 0 to 23 A, 11.94 11.98 0.7 12.0 Output Ripple Voltage & Noise 20 MHz Bandwidth Output Current Operating Range Output Current Share Accuracy Efficiency Turn-On Time Start-up Inhibit Time Transient Response 20 Percent deviation from ideal (9) Vin = 48 V, Io = 20 A Vin present: Enable to 90% Vout Enabled: Vin applied to 90% Vout Vdc V Vdc Vdc mV p-p A % % mS mS mV 100 2000 μs μF 8.3 9.7 13.75 13.25 90 0 25% step, 0.1A/μs, ΔVo Recovery Time Maximum Output Capacitance 150 < 10 95.5 10 80 160 Technical enquiries email: [email protected], tel: +508 339 3000 1 EUS20-120-6200921520.B01 18/04/08 Murata Power Solutions BUS CONVERTER EUS20-120 Model Table 1 Protection Characteristics Notes & Conditions 0 Min Typ. Max Units Output Over-Current Shutdown Non-Latching Re-start rate Non-Latching 24 25 75 125 10 27 A msec °C °C Over Temperature Shutdown (5) Over Temperature Restart Hysteresis 130 Table 2 General Specifications Notes & Conditions 0 Min Isolation Voltage Isolation Resistance Storage Temperature Range Operating Temperature Range Thermal Measurement Location Temperature (7) Material Flammability MTBF Input to Output Input to Output Non-condensing Ambient (7) See mechanical drawing for 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 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 3 Standards Compliance Notes & Conditions (6) UL/CSA 60950 EN60950 Basic Insulation Certified by TUV Notes: Vin = 48Vdc, Ta = 25 °C, Airflow = 200 LFM for all data unless otherwise noted. Output ripple voltage and noise is specified when measured with a 10uF tantalum and a 1uF ceramic capacitor at the converter output pins. Transient response is specified without a capacitor at the output of the converter. Product operates with an external capacitance significantly greater than specified. However, for values higher than 2000uF please contact C&D representative. Thermal shutdown is monitored at the Thermal Measurement Location (TML). See ‘Mechanical Information’ on page 3 for TML location. See ‘Safety Considerations’ shown on last page. 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. Recommended airflow direction is from pin 1 to pin 3, or 3 to 1 (transverse airflow). Current share accuracy is optimized when the source and load impedance presented to each converter is equal. Input Reflected Ripple is specified when measured with a 12uH source inductance. EUS20-120-6200921520.B01 18/04/08 2 Murata Power Solutions BUS CONVERTER EUS20-120 Model Mechanical Information Figure 1 Pin Assignment Table 4 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 EUS20-120-6200921520.B01 18/04/08 3 BUS CONVERTER Murata Power Solutions EUS20-120 Model Efficiency Curves Efficiency (%) vs. Iout (A) and Vin (V) 97% 96% 95% 94% 93% 55Vin 92% 48Vin 42Vin 91% 38Vin 90% 2 4 6 8 10 12 14 16 18 20 22 24 20 22 24 Output Voltage vs. Current Vo (V) vs. Io (A) and Vin (V) 14 13 12 11 10 9 55 Vin 8 48 Vin 42 Vin 7 38 Vin 6 0 2 4 6 8 10 12 14 16 18 EUS20-120-6200921520.B01 18/04/08 4 BUS CONVERTER Murata Power Solutions EUS20-120 Model Thermal Derating Curves (Transverse) TTML=120C Airflow from pin 3 to pin 1 Iout (A) vs. Tamb (C) and Air Flow (LFM) at 42 Vin Iout (A) vs. Tamb (C) and Air Flow (LFM) at 38 Vin 24 22 24 22 20 18 16 14 12 10 8 6 4 2 0 20 18 16 14 12 10 8 6 4 2 0 100 LFM 200 LFM 300 LFM 400 LFM 25 35 45 55 65 75 100 LFM 200 LFM 300 LFM 400 LFM 25 85 35 45 55 65 75 85 Iout (A) vs. Tamb (C) and Air Flow (LFM) at 55 Vin Iout (A) vs. Tamb (C) and Air Flow (LFM) at 48 Vin 24 24 22 22 20 20 18 18 16 16 14 14 12 12 100 LFM 10 8 6 100 LFM 10 8 200 LFM 200 LFM 6 300 LFM 4 300 LFM 4 400 LFM 2 2 0 400 LFM 0 25 35 45 55 65 75 85 25 35 45 55 65 75 85 Output Power Curves at 200 LFM as a function of Ambient Temperature and Vin 350 300 250 200 150 100 Vin = 38 VDC Vin = 42 VDC Vin = 48 VDC Vin = 55 VDC 50 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature EUS20-120-6200921520.B01 18/04/08 5 BUS CONVERTER Murata Power Solutions EUS20-120 Model Turn-on from Vin (Enable On) Figure 9 Turn-on from Enable (Vin present) Ch1: Vin; Ch2: Vout Figure 10 C3: Enable; Ch2: Vout Vin=48V, Io=20A, Co=1000uF Output Ripple/Noise Vin=48V, Io=20A, Co=1000uF Thermal Image 140.0°C 140 120 SP04: 86.7 SP01: 83.4 100 SP03: 78.0 80 SP02: 77.0 SP05: 91.2 60 40 40.0°C Figure 11 Vin=48V, Io=20A Figure 12 Vripple = 114 mVpp Vi=48 V, Iout=20 A, 200 LFM bottom side EUS20-120-6200921520.B01 18/04/08 6 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 TNV-2 requirements. The converters and materials meet UL 94V-0 flammability ratings. Figure 13 Ordering Information 7 EUS20-120-6200921520.B01 18/04/08