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Q48SK12025NNFN Datasheet(PDF) 2 Page - Delta Electronics, Inc. |
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Q48SK12025NNFN Datasheet(HTML) 2 Page - Delta Electronics, Inc. |
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2 / 13 page  DS_Q48SK12025_07012010 2 TECHNICAL SPECIFICATIONS (TA=25°C, airflow rate=300 LFM, Vin=48Vdc, nominal Vout unless otherwise noted; PARAMETER NOTES and CONDITIONS Q48SK12025 (Standard) Min. Typ. Max. Units ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous 80 Vdc Transient 100ms 100 Vdc Operating Hot Spot Temperature (Without heat spreader) Refer to figure 18 for measuring point -40 118 °C Operating Case Temperature (With heat spreader) Refer to figure 20 for measuring point -40 112 °C Storage Temperature -55 125 °C Input/Output Isolation Voltage 2250 Vdc INPUT CHARACTERISTICS Operating Input Voltage 36 48 75 Vdc Input Under-Voltage Lockout Turn-On Voltage Threshold 32.0 34.0 36.0 Vdc Turn-Off Voltage Threshold 30.0 32.0 34.0 Vdc Lockout Hysteresis Voltage 2 Vdc Maximum Input Current 100% Load, 36Vin 11 A No-Load Input Current Vin=48V, Io=0A 160 mA Off Converter Input Current Vin=48V, Io=0A 10 mA Inrush Current (I 2t) 1 A 2s Input Reflected-Ripple Current P-P thru 12µH inductor, 5Hz to 20MHz 10 mA Input Voltage Ripple Rejection 120 Hz -30 dB OUTPUT CHARACTERISTICS Output Voltage Set Point Vin=48V, Io=0, Tc=25°C 11.4 11.7 12.0 Vdc Output Voltage Regulation Over Load Vin=48V, Io=Io,min to Io,max ± 30 ± 80 mV Over Line Vin=36V to 75V, Io=Io min ± 50 mV Over Temperature Vin=48V, Tc=-40°C to 85°C ± 100 mV Total Output Voltage Range over sample load, line and temperature 11.2 12.0 Vdc Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth Peak-to-Peak Full Load, 1µF ceramic, 10µF tantalum 120 mV RMS Full Load, 1µF ceramic, 10µF tantalum 50 mV Operating Output Current Range 0 25 A Output DC Current-Limit Inception Output Voltage 10% Low 110 140 % 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 300 mV Negative Step Change in Output Current 75% Io.max to 50% Io.max 300 mV Settling Time (within 1% Vout nominal) 300 µs Turn-On Transient Start-Up Time, From On/Off Control 70 ms Start-Up Time, From Input 80 ms Maximum Output Capacitance Full load; 20000 µF EFFICIENCY 100% Load Vin=48V 95.2 % 60% Load Vin=48V 94.7 % ISOLATION CHARACTERISTICS Input to Output 2250 Vdc Isolation Resistance 10 MΩ Isolation Capacitance 1000 pF FEATURE CHARACTERISTICS Switching Frequency 160 kHz ON/OFF Control, Negative Remote On/Off logic Logic Low (Module On) Von/off at Ion/off=1.0mA 0 0.8 V Logic High (Module Off) Von/off at Ion/off=0.0 µA 2 50 V ON/OFF Control, Positive Remote On/Off logic Logic Low (Module Off) Von/off at Ion/off=1.0mA 0 0.8 V Logic High (Module On) Von/off at Ion/off=0.0 µA 2 50 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 Over-Voltage Protection Over full temp range; % of nominal Vout 115 140 % GENERAL SPECIFICATIONS MTBF(with heat spreader) Io=100% of Io, max; Tc=40°C;Airflow=600LFM 2.6 M hours Weight(without heat spreader) 50.5 grams Weight(with heat spreader) 65.5 grams Over-Temperature Shutdown ( Without heat spreader) Refer to figure 18 for measuring point 126 °C Over-Temperature Shutdown (With heat spreader) Refer to figure 20 for measuring point 122 °C |
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