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S48SA1R812NTFC Datasheet(PDF) 2 Page - Delta Electronics, Inc. |
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S48SA1R812NTFC Datasheet(HTML) 2 Page - Delta Electronics, Inc. |
2 / 13 page DS_S48SA1R212_05122006 TECHNICAL SPECIFICATIONS (TA=25°C, airflow rate=300 LFM, Vin=48Vdc, nominal Vout unless otherwise noted) PARAMETER NOTES and CONDITIONS S48SA1R212NRFA Min. Typ. Max. Units ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous 80 Vdc Transient (100ms) 100ms 100 Vdc Operating Temperature Refer to Figure 18 for measuring point -40 102 °C Storage Temperature -55 125 °C Input/Output Isolation Voltage 1 minute 1500 Vdc INPUT CHARACTERISTICS Operating Input Voltage 36 48 75 V Input Under-Voltage Lockout Turn-On Voltage Threshold 32.5 34 35.5 V Turn-Off Voltage Threshold 30.5 32 33.5 V Lockout Hysteresis Voltage 1 2 3 V Maximum Input Current 100% Load, 36Vin 0.85 A No-Load Input Current 35 mA Off Converter Input Current 7 mA Inrush Current(I 2t) 0.01 A 2s Input Reflected-Ripple Current P-P thru 12µH inductor, 5Hz to 20MHz 5 mA Input Voltage Ripple Rejection 120 Hz 50 dB OUTPUT CHARACTERISTICS Output Voltage Set Point Vin=48V, Io=50%Io.max, Ta=25℃ 1.17 1.20 1.23 V Output Voltage Regulation Over Load Io=Io,min to Io,max ±2 ±10 mV Over Line Vin=36V to75V ±2 ±5 mV Over Temperature Ta=-40℃ to 85℃ 100 300 ppm/℃ Total Output Voltage Range Over sample load, line and temperature 1.15 1.25 V Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth Peak-to-Peak Full Load, 1µF ceramic, 10µF tantalum 30 75 mV RMS Full Load, 1µF ceramic, 10µF tantalum 5 20 mV Operating Output Current Range 0 12 A Output DC Current-Limit Inception Output Voltage 10% Low 13.2 15.6 18 A 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 35 100 mV Negative Step Change in Output Current 75% Io,max to 50% Io.max 35 100 mV Settling Time to 1% of Final value 200 µs Turn-On Transient Start-Up Time, From On/Off Control 6 12 ms Start-Up Time, From Input 6 12 ms Maximum Output Capacitance Full load; 5% overshoot of Vout at startup 2200 µF EFFICIENCY 100% Load 82 84 % ISOLATION CHARACTERISTICS Isolation Voltage 1500 V Isolation Resistance 10 MΩ Isolation Capacitance 1500 pF FEATURE CHARACTERISTICS Switching Frequency 330 kHz ON/OFF Control, (Logic Low-Module ON) Logic Low Von/off at Ion/off=1.0mA 0 0.8 V Logic High Von/off at Ion/off=0.0 µA 15 V ON/OFF Current Ion/off at Von/off=0.0V 1 mA Leakage Current Logic High, Von/off=15V 50 uA Output Voltage Trim Range Across Trim Pin & +Vo or –Vo, Pout≦max rated -10 +10 % Output Over-Voltage Protection(Hiccup) Over full temp range; % of nominal Vout 115 125 160 % GENERAL SPECIFICATIONS Calculated MTBF Io=80% of Io, max; Tc=40°C TBD hours Weight 18 grams Over-Temperature Shutdown Refer to Figure 18 for measuring point 115 °C 2 |
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