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E48SC Datasheet(PDF) 2 Page - Delta Electronics, Inc. |
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E48SC Datasheet(HTML) 2 Page - Delta Electronics, Inc. |
2 / 15 page DS_E48SC3R325_06152011 2 TECHNICAL SPECIFICATIONS (TA=25°C, airflow rate=300 LFM, Vin=48Vdc, nominal Vout unless otherwise noted.) PARAMETER NOTES and CONDITIONS E48SC3R325 (Standard) Min. Typ. Max. Units ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous 75 Vdc Transient (100ms) 100ms 100 Vdc Operating Temperature Refer to Figure 21 for measuring point -40 115 °C Storage Temperature -55 125 °C Input/Output Isolation Voltage 1500 Vdc INPUT CHARACTERISTICS Operating Input Voltage 36 48 75 Vdc Input Under-Voltage Lockout Turn-On Voltage Threshold 33 34 35 Vdc Turn-Off Voltage Threshold 31 32 33 Vdc Lockout Hysteresis Voltage 1.5 2.5 3.5 Vdc Maximum Input Current 100% Load, 36Vin 2.9 A No-Load Input Current 50 mA Off Converter Input Current 6 mA Inrush Current(I 2t) 1 A 2s Input Reflected-Ripple Current P-P thru 12µH inductor, 5Hz to 20MHz 20 mA Input Voltage Ripple Rejection 120 Hz dB OUTPUT CHARACTERISTICS Output Voltage Set Point Vin=48V, Io=Io.max, Tc=25°C 3.267 3.300 3.333 Vdc Output Voltage Regulation Over Load Io=Io,min to Io,max ±3 ±7 mV Over Line Vin=36V to 75V ±3 ±7 mV Over Temperature Tc=-40°C to 85°C ±15 mV Total Output Voltage Range over sample load, line and temperature 3.234 3366 V Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth Peak-to-Peak Full Load, 1µF ceramic, 10µF tantalum 50 70 mV RMS Full Load, 1µF ceramic, 10µF tantalum 15 30 mV Operating Output Current Range 0 25 A Output DC Current-Limit Inception Output Voltage 10% Low 112 136 % DYNAMIC CHARACTERISTICS Output Voltage Current Transient 48V, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs Positive Step Change in Output Current 50% Io.max to 75% Io.max 120 mV Negative Step Change in Output Current 75% Io.max to 50% Io.max 120 mV Settling Time (within 1% Vout nominal) 200 us Turn-On Transient Start-Up Time, From On/Off Control 12 ms Start-Up Time, From Input 12 ms Maximum Output Capacitance Full load; 5% overshoot of Vout at startup 20000 µF EFFICIENCY 100% Load 91.0 % 60% Load 92.0 % ISOLATION CHARACTERISTICS Input to Output 1500 Vdc Isolation Resistance 10 MΩ Isolation Capacitance 3300 pF FEATURE CHARACTERISTICS Switching Frequency 350 kHz ON/OFF Control, Negative Remote On/Off logic Logic Low (Module On) Von/off at Ion/off=1.0mA 0.7 V Logic High (Module Off) Von/off at Ion/off=0.0 µA 2 18 V ON/OFF Control, Positive Remote On/Off logic Logic Low (Module Off) Von/off at Ion/off=1.0mA 0.7 V Logic High (Module On) Von/off at Ion/off=0.0 µA 2 18 V ON/OFF Current (for both remote on/off logic) Ion/off at Von/off=0.0V 1 mA Leakage Current (for both remote on/off logic) Logic High, Von/off=15V 50 uA Output Voltage Trim Range Across Pins 9 & 5, Pout ≦ max rated power -10% 10% % Output Voltage Remote Sense Range Pout ≦ max rated power 10 % Output Over-Voltage Protection Over full temp range; % of nominal Vout 3.8 4.46 V GENERAL SPECIFICATIONS MTBF Io=80% of Io, max; 300LFM @25C 3.6 M hours Weight 25 grams Over-Temperature Shutdown Refer to Figure 21 for measuring point 120 °C |
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