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F48SA28025NRFA Datasheet(PDF) 2 Page - Delta Electronics, Inc. |
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F48SA28025NRFA Datasheet(HTML) 2 Page - Delta Electronics, Inc. |
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2 / 13 page  TECHNICAL SPECIFICATIONS (TA=25°C, Vin=48Vdc, nominal Vout unless otherwise noted.) PARAMETER NOTES and CONDITIONS F48SA28025 (Standard) Min. Typ. Max. Units ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous 80 Vdc Transient (100ms) 100ms 100 Vdc Operating Temperature Please refer to Fig 20 for measuring point -40 95 °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 33 34.5 36 Vdc Turn-Off Voltage Threshold 31 32.5 34 Vdc Lockout Hysteresis Voltage 2 Vdc Input Over-Voltage Lockout Turn-On Voltage Threshold 76 78 80 Vdc Turn-Off Voltage Threshold 78 80 82 Vdc Lockout Hysteresis Voltage 2 Vdc Maximum Input Current 100% Load, 36Vin 23 A Inrush Current(I 2t) 1 A 2s Input Reflected-Ripple Current P-P thru 15µH inductor, 5Hz to 20MHz 20 mA Input Voltage Ripple Rejection 120 Hz 50 dB OUTPUT CHARACTERISTICS Output Voltage Set Point Vin=48V, Io=Io.max, Tc=25°C 27.72 28.00 28.28 Vdc Output Voltage Regulation Over Load Io=Io,min to Io,max 28 56 mV Over Line Vin=36V to 75V 28 56 mV Over Temperature Tc=-40°C to 100°C 100 300 mV Total Output Voltage Range over all load, line and temperature 27.25 28.00 28.75 V Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth Peak-to-Peak Full Load, 1µF ceramic, 10µF Low ESR cap 200 mV RMS Full Load, 1µF ceramic, 10µF Low ESR cap 65 mV Operating Output Current Range 2 25 A Output DC Current-Limit Inception Output Voltage 10% Low 120 150 % DYNAMIC CHARACTERISTICS Output Voltage Current Transient 48V, Tested with a 10µF, a 1µF Ceramic cap and a 470uF low ESR aluminum load cap, Δ Io/Δt=1A/µs Positive Step Change in Output Current 50% Io.max to 75% Io.max 450 mV Negative Step Change in Output Current 75% Io.max to 50% Io.max 450 mV Settling Time (within 1% Vout nominal) 500 us Turn-On Transient Start-Up Time, From On/Off Control 20 35 ms Start-Up Time, From Input 20 35 ms Output Capacitive Load 470 6000 µF EFFICIENCY 100% Load 91.5 % 60% Load 91.5 % ISOLATION CHARACTERISTICS Input to Output 2250 Vdc Input to Case 2250 Vdc Output to Case 500 Vdc Isolation Resistance 10 MΩ Isolation Capacitance 1800 pF FEATURE CHARACTERISTICS Switching Frequency 300 kHz Output overshoot Voltage during start up 0 Power good pin max applied voltage Max sink current 5mA 35 V Auxiliary output voltage Aux pin source current <=20mA Referenced to Sense(-) pin 7 10 13 V Output Voltage Trim Range Pout ≦ max rated power -15 +10 % Output Voltage Remote Sense Range Pout ≦ max rated power 0.5 V Output Over-Voltage Protection Over full temp range; % of nominal Vout 115 140 % GENERAL SPECIFICATIONS MTBF Io=80% of Io, max; Ta=25°C 1.14 M hours Weight 168 grams Over-Temperature Shutdown Please refer to Fig.20 for measuring point 100 °C DS_F48SA28025_06062005 2 |
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