TECHNICAL SPECIFICATIONS
(TA=25°C, airflow rate=300 LFM, Vin=48Vdc, nominal Vout unless otherwise noted.)
PARAMETER | NOTES and CONDITIONS |
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| S48SS12001NRFA |
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| Min. |
| Typ. | Max. |
| Units |
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ABSOLUTE MAXIMUM RATINGS |
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Input Voltage |
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Continuous |
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| 80 |
| Vdc |
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Transient (100ms) | 100ms |
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| 100 |
| Vdc |
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Operating Temperature | Refer to Figure 12 for the measuring point |
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| 100 |
| °C |
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Storage Temperature |
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| 125 |
| °C |
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Input/Output Isolation Voltage | 1 minute |
| 1500 |
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| Vdc |
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INPUT CHARACTERISTICS |
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Operating Input Voltage |
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| 36 |
| 48 | 75 |
| V |
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Input |
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| 33.8 |
| 34.5 | 35.8 |
| V |
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| 32.0 |
| 33.5 | 34.5 |
| V |
| |
Lockout Hysteresis Voltage |
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| 0.5 |
| 1.5 | 2.5 |
| V |
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Maximum Input Current | 100% Load, 36Vin |
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| 0.6 |
| A |
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| 25 |
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| mA |
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Off Converter Input Current |
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| 1 |
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| mA |
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Inrush Current(I2t) |
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| 0.01 |
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| A2s |
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Input |
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| 5 |
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| mA |
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Input Voltage Ripple Rejection | 120 Hz |
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| 55 |
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| dB |
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OUTPUT CHARACTERISTICS |
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Output Voltage Set Point | Vin=48V, Io=50% Io, max, Tc=25℃ |
| 11.76 |
| 12.00 | 12.24 |
| V |
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Output Voltage Regulation |
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Over Load | Io=Io,min to Io,max |
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| ±12 | ±60 |
| mV |
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Over Line | Vin=36V to 75V |
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| ±12 | ±36 |
| mV |
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Over Temperature |
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| 100 | 300 |
| ppm/℃ |
| |
Total Output Voltage Range | Over sample load, line and temperature |
| TBD |
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| TBD |
| V |
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Output Voltage Ripple and Noise | 5Hz to 20MHz bandwidth |
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Full Load, 1µF ceramic, 10µF tantalum |
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| 50 | 100 |
| mV |
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RMS | Full Load, 1µF ceramic, 10µF tantalum |
|
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| 15 | 25 |
| mV |
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Operating Output Current Range |
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| 0 |
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| 1.25 |
| A |
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Output DC | Output Voltage 10% Low |
| 1.5 |
| 2 | 2.5 |
| A |
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DYNAMIC CHARACTERISTICS |
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Output Voltage Current Transient | 48V, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs |
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Positive Step Change in Output Current | 50% Io, max to 75% Io, max |
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| 100 | 240 |
| mV |
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Negative Step Change in Output Current | 75% Io, max to 50% Io, max |
|
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| 100 | 240 |
| mV |
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Setting Time to 1% of Final Value |
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| 600 |
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| µs |
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| 35 | 50 |
| ms |
| |
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| 35 | 50 |
| ms |
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Maximum Output Capacitance | Full load; 5% overshoot of Vout at startup |
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| 47 |
| µF |
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EFFICIENCY |
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100% Load |
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| 84 |
| 86.5 |
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| % |
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ISOLATION CHARACTERISTICS |
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Isolation Voltage |
|
| 1500 |
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| V |
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Isolation Resistance |
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| 100 |
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| MΩ |
|
Isolation Capacitance |
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| 500 |
|
| pF |
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FEATURE CHARACTERISTICS |
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Switching Frequency |
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| 260 |
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| kHz |
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ON/OFF Control, (Logic |
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Logic Low | Von/off at Ion/off=1.0mA |
| 0 |
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| 0.8 |
| V |
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Logic High | Von/off at Ion/off=0.0 µA |
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| 15 |
| V |
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ON/OFF Current | Ion/off at Von/off=0.0V |
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| 1 |
| mA |
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Leakage Current | Logic High, Von/off=15V |
|
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| 50 |
| µA |
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Output Voltage Trim Range | Across Trim Pin & +Vo or |
|
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| +10 |
| % |
| |
Output | Over full temp range; % of nominal Vout |
| 115 |
| 125 | 140 |
| % |
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GENERAL SPECIFICATIONS |
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Calculated MTBF | Io=80% of Io, max; Tc=40°C |
|
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| 3 |
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| M hours |
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Weight |
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| 12.5 |
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| grams |
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2
DS_s48SS12001_06082006
