DS_V48SR15004_06122007
2
TECHNICAL SPECIFICATIONS
(T
A
=25°C, airflow rate=300 LFM, V
in
=48Vdc, nominal Vout unless otherwise noted.)
PARAMETER NOTES and CONDITIONS V48SR15004 (Standard)
Min. Typ. Max. Units
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous 80 Vdc
Transient (100ms) 100ms 100 Vdc
Operating Temperature Refer to figure 21 for measuring point -40 121 °C
Storage Temperature -55 125 °C
Input/Output Isolation Voltage 2250 Vdc
INPUT CHARACTERISTICS
Operating Input Voltage 36 75 Vdc
Input Under-Voltage Lockout
Turn-On Voltage Threshold 32.5 34 35.5 Vdc
Turn-Off Voltage Threshold 30.5 32 33.5 Vdc
Lockout Hysteresis Voltage 1 2 3 Vdc
Maximum Input Current 100% Load, 36Vin 2.3 A
No-Load Input Current 50 mA
Off Converter Input Current 10 mA
Inrush Current (I
2
t) 1 A
2
s
Input Reflected-Ripple Current P-P thru 12µH inductor, 5Hz to 20MHz 20 mA
Input Voltage Ripple Rejection 120 Hz 60 dB
OUTPUT CHARACTERISTICS
Output Voltage Set Point Vin=48V, Io=Io.max, Tc=25°C 14.85 15.00 15.15 Vdc
Output Voltage Regulation
Over Load Io=Io, min to Io, max ±3 ±10 mV
Over Line Vin=36V to 75V ±3 ±10 mV
Over Temperature Tc=-40°C to125°C ±150 mV
Total Output Voltage Range Over sample load, line and temperature 14.55 15.45 V
Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth
Peak-to-Peak Full Load, 1µF ceramic, 10µF tantalum 120 200 mV
RMS Full Load, 1µF ceramic, 10µF tantalum 30 60 mV
Operating Output Current Range 0 4.4 A
Output Over Current Protection 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) 200 us
Turn-On Transient
Start-Up Time, From On/Off Control 30 ms
Start-Up Time, From Input 30 ms
Maximum Output Capacitance Full load; 5% overshoot of Vout at startup 1000 µF
EFFICIENCY
100% Load 90.5 %
60% Load 90.5 %
ISOLATION CHARACTERISTICS
Input to Output 2250 Vdc
Isolation Resistance 10 MΩ
Isolation Capacitance 1100 pF
FEATURE CHARACTERISTICS
Switching Frequency 380 420 460 kHz
ON/OFF Control, Negative Remote On/Off logic
Logic Low (Module On) Von/off 0.7 V
Logic High (Module Off) Von/off 2 18 V
ON/OFF Control, Positive Remote On/Off logic
Logic Low (Module Off) Von/off 0.7 V
Logic High (Module On) Von/off 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
Pout ≦ max rated power
-15 10 %
Output Voltage Remote Sense Range
Pout ≦ max rated power
10 %
Output Over-Voltage Protection Over full temp range; % of nominal Vout 115 170 %
GENERAL SPECIFICATIONS
MTBF Io=80% of Io, max; Ta=25°C, airflow rate=300FLM T2.46 M hours
Weight 16 grams
Over-Temperature Shutdown Refer to figure 21 for measuring point 126 °C
