Datasheet

DS_E36SR12004_06192012
2
TECHNICAL SPECIFICATIONS
(T
A
=25°C, airflow rate=300 LFM, V
in
=24/48Vdc, nominal Vout unless otherwise noted.)
PARAMETER NOTES and CONDITIONS E36SR12004
Min. Typ. Max. Units
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous 60 Vdc
Transient (100ms) 100ms 100 Vdc
Operating Ambient Temperature -40 85 °C
Storage Temperature -55 125 °C
Input/Output Isolation Voltage 1500 Vdc
INPUT CHARACTERISTICS
Operating Input Voltage 18 60 Vdc
Input Under-Voltage Lockout
Turn-On Voltage Threshold 16 17 18 Vdc
Turn-Off Voltage Threshold 14 15 16 Vdc
Lockout Hysteresis Voltage 1 2 3 Vdc
Maximum Input Current 100% Load, 18Vin 3.5 A
No-Load Input Current 30 60 120 mA
Off Converter Input Current 3 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 50 dB
OUTPUT CHARACTERISTICS
Output Voltage Set Point Vin=48V, Io=Io.max, Tc=25°C 11.820 12.000 12.180 Vdc
Output Voltage Regulation
Over Load Io=Io,min to Io,max ±24 ±48 mV
Over Line Vin=18V to 60V ±24 ±48 mV
Over Temperature Tc=-40°C to 85°C ±180 mV
Total Output Voltage Range Over sample load, line and temperature 11.8 12.2 Vdc
Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth
Peak-to-Peak Full Load, 1µF ceramic, 10µF tantalum 50 100 mV
RMS Full Load, 1µF ceramic, 10µF tantalum 25 mV
Operating Output Current Range 0.4 4 A
Output Over Current Protection 4.4 5.6 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 200 400 mV
Negative Step Change in Output Current 75% Io.max to 50% Io.max 200 400 mV
Settling Time (within 1% Vout nominal) 100 us
Turn-On Transient
Start-Up Time, From On/Off Control 15 25 ms
Start-Up Time, From Input 15 25 ms
Maximum Output Capacitance Full load; 5% overshoot of Vout at startup 2000 µF
EFFICIENCY
Io from2.8A o 4A Vin From 18v to 55v 89.5 . %
ISOLATION CHARACTERISTICS
Input to Output 1500 Vdc
Isolation Resistance 10 MΩ
Isolation Capacitance 1000 pF
FEATURE CHARACTERISTICS
Switching Frequency 300 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 3 12 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 3.5 12 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=12V 50 uA
Output Over-Voltage Protection Over full temp range; 13.2 16.8 V
GENERAL SPECIFICATIONS
MTBF
Io=100% of Io, max; Ta=25°C, airflow
rate=200FLM
6.48 M hours
Weight 22.9 Grams
Over-Temperature Shutdown (Hot Spot)
Refer to Figure 21 for Hot spot location
(48Vin,80%Io, 200LFM,Airflow from Vin- to Vin+)
124 °C
Over-Temperature Shutdown (NTC Resistor) Refer to Figure 21 for NTC resistor location 120 °C
Note: Please attach thermocouple on NTC resistor to test OTP function, the hot spot’s temperature is just for reference.