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FEATURES
High efficiency: 94.5% @12V/20A
Size:
58.4mm x 22.8mm x 10.9mm
(2.30x0.90x0.43) W/O Heat spreader
58.4mm x 22.8mm x 12.7mm
(2.30x0.90x0.5) With Heat spreader
Industry standard pin out
Fixed frequency operation
Input UVLO, Output OCP & OVP, OTP
Monotonic startup into normal and
Pre-biased loads
2250V Isolation and basic insulation
No minimum load required
No negative current during power on or
power off;
ISO 9001, TL 9000, ISO 14001, QS 9000,
OHSAS 18001 certified manufacturing
facility
UL/cUL 60950-1 (US & Canada) recognized.
Delphi Series E48SP Eighth Brick Family
DC/DC Power Modules: 48V in, 12V/20A out
OPTIONS
The Delphi Series E48SP, 36~75V input, Eighth Brick, single output, Positive On/Off logic
isolated DC/DC converters are the latest offering from a world leader in
Short pin lengths available
power systems technology and manufacturing Delta Electronics,
Latched over voltage protection
Inc. The E48SP product provides up to 240 watts of power in an
industry standard footprint and pinout. The E48SP converter
operates from an input voltage of 36V to 75V. Efficiency is 94.5% for
the 12V output at full load. With creative design technology and
op timization of component placement, these converters possess
outstanding electrical and thermal performance, as well as extremely
high reliability under highly stressful operating conditions. All models
are fully protected from abnormal input/output voltage, current, and
APPLICATIONS
temperature conditions. The Delphi Series converters meet all safety
Telecom/DataCom
requirements with basic insulation.
Wireless Networks
Optical Network Equipment
Server and Data Storage
Industrial/Test Equipment
DATASHEET
DS_E48SP12020_06142017
TECHNICAL SPECIFICATIONS
(T =25C, airflow rate=300 LFM, V =48Vdc, nominal Vout unless otherwise noted.)
A in
PARAMETER NOTES and CONDITIONS E48SP12020 (Standard)
Min. Typ. Max. Units
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous 80 Vdc
Transient (100ms) 100ms 100 Vdc
Operating Hot Spot Temperature (Without heat spreader) Refer to figure 18 for measuring point -40 122 C
Operating Case Temperature (With heat spreader) Refer to figure 20 for measuring point -40 110 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 Vin=36V, 100% Load, 7 7.8 A
No-Load Input Current 70 150 mA
Off Converter Input Current 8 12 mA
2 2
Inrush Current(I t) With 100uF external input capacitor 1 A s
Start up Current Peak, Vin=36V, 100% Load, With 5000uF Co 7 12 A
Input Terminal Ripple Current RMS, Vin=48V, With 100uF input cap. 0.16 0.24 A
Input Reflected-Ripple Current P-P thru 12H inductor, 5Hz to 20MHz 6 mA
Input Voltage Ripple Rejection 120 Hz 60 dB
OUTPUT CHARACTERISTICS
Output Voltage Set Point Vin=48V, Io=Io.max, Tc=25C 11.67 11.85 12.02 Vdc
Output Voltage Regulation
Over Load Io=Io,min to Io,max +20 mV
Over Line Vin=36V to 75V +15 mV
Over Temperature Tc=-40C to 125C 120 mV
Total Output Voltage Range over sample load, and temperature 11.5 11.85 12.2 V
Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth
Peak-to-Peak Full Load, 1F ceramic, 10F tantalum 100 200 mV
RMS Full Load, 1F ceramic, 10F tantalum 40 80 mV
Operating Output Current Range Full input voltage range 0 20 A
Output DC Current-Limit Inception Output Voltage 10% Low 110 150 %
DYNAMIC CHARACTERISTICS
Output Voltage Current Transient 48V, 10F Tan & 1F Ceramic load cap, 0.1A/s
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
Setting Time (within 1% Vout nominal) 200 s
Turn-On Transient
Start-Up Time, From On/Off Control 30 40 ms
Start-Up Time, From Input 30 40 ms
Maximum Output Capacitance Full load; no overshoot of Vout at startup 5000 F
EFFICIENCY
100% Load Vin=48V 93.5 94.5 %
60% Load Vin=48V 94 95 %
ISOLATION CHARACTERISTICS
Input to Output 2250 Vdc
Isolation Resistance 10 M
Isolation Capacitance 1500 pF
FEATURE CHARACTERISTICS
Switching Frequency 245 kHz
ON/OFF Control, Negative Remote On/Off logic
Logic Low (Module On) Von/off -0.7 0.8 V
Logic High (Module Off) Von/off 2.4 50 V
ON/OFF Control, Positive Remote On/Off logic
Logic Low (Module Off) Von/off -0.7 0.8 V
Logic High (Module On) Von/off 2.4 50 V
ON/OFF Current (for both remote on/off logic) Ion/off at Von/off=0.0V 0.5 mA
ON/OFF Current (for both remote on/off logic) Ion/off at Von/off=2.4V 10 A
Leakage Current (for both remote on/off logic) Logic High, Von/off=15V 50 A
Output Over-Voltage Protection Over full temp range; % of nominal Vout 14.6 18 V
GENERAL SPECIFICATIONS
MTBF Io=100% of Io, max; 300LFM; Ta=25 C 1.19 M hours
Weight Open frame 29.1 grams
Weight With heat spreader 39.2 grams
Over-Temperature Shutdown ( Without heat spreader) Refer to figure 18 for measuring point 132 C
Over-Temperature Shutdown (With heat spreader) Refer to figure 20 for measuring point 120 C
2
DS_E48SP12020_06142017