FEATURES
High efficiency: 92% @ 12V/8A
Size:
58.4mmx22.8mmx8.4mm
(2.30”x0.90”x0.33”)
(Without heat-spreader)
58.4mmx22.8mmx12.7mm
(2.30”x0.90”x0.50”)
(With heat-spreader)
Standard footprint
Industry standard pin out
Fixed frequency operation
Input UVLO, Output OCP, OVP, OTP
2250V isolation
Basic insulation
No minimum load required
ISO 9001, TL 9000, ISO 14001, QS 9000,
OHSAS 18001 certified manufacturing facility
UL/CUL 60950-1 (US & Canada) Recognized
Delphi Series E48SC12008, Eighth Brick Family
DC/DC Power Modules: 48V in, 12V/8A out
The Delphi Series E48SC12008, Eighth Brick, 48V input, single output,
isolated DC/DC converter is the latest offering from a world leader in
power systems technology and manufacturing -- Delta Electronics, Inc.
This product family provides up to 96 watts, improved and very cost
effective power solution of industry standard footprint and pinout. With
creative design technology and optimization of component placement,
these
converters
possess
outstanding
electrical
and
thermal
performances, as well as extremely high reliability under highly stressful
operating conditions. All models are fully protected from abnormal
input/output voltage, current, and temperature conditions. The Delphi
Series converters meet all safety requirements with basic insulation.
OPTIONS
Negative/Positive on/off logic
SMT or through-hole version
APPLICATIONS
Telecom / Datacom
Wireless Networks
Optical Network Equipment
Server and Data Storage
Industrial / Testing Equipment
DATASHEET
DS_ E48SC12008_03192012
LUO LUOTECHNICAL SPECIFICATIONS
(T
A
=25°C, airflow rate=300 LFM, V
in
=48Vdc, nominal Vout unless otherwise noted.)
PARAMETER
NOTES and CONDITIONS
E48SC12008 (Standard)
Min.
Typ.
Max.
Units
80
100
85
125
2250
75
34
32
2
80
10
1
20
60
12.00
±3
±3
12.12
±15
±15
±100
12.25
120
25
8
140
35
33
3
3.5
Vdc
Vdc
°C
°C
Vdc
Vdc
Vdc
Vdc
Vdc
A
mA
mA
2
As
mA
dB
Vdc
mV
mV
mV
V
mV
mV
A
%
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous
Transient
100ms
Operating Ambient Temperature
-40
Storage Temperature
-55
Input/Output Isolation Voltage
INPUT CHARACTERISTICS
Operating Input Voltage
36
Input Under-Voltage Lockout
Turn-On Voltage Threshold
33
Turn-Off Voltage Threshold
31
Lockout Hysteresis Voltage
1
Maximum Input Current
100% Load, 36Vin
No-Load Input Current
Off Converter Input Current
2
Inrush Current(I t)
Input Reflected-Ripple Current
P-P thru 12µH inductor, 5Hz to 20MHz
Input Voltage Ripple Rejection
120 Hz
OUTPUT CHARACTERISTICS
Output Voltage Set Point
Vin=48V, Io=Io.max, Tc=25°C
11.88
Output Voltage Regulation
Over Load
Io=Io,min to Io,max
Over Line
Vin= 36V to 75V
Over Temperature
Tc= -40°C to 85°C
Total Output Voltage Range
Over sample load, line and temperature
11.76
Output Voltage Ripple and Noise
5Hz to 20MHz bandwidth
Peak-to-Peak
Full Load, 1µF ceramic, 10µF tantalum
RMS
Full Load, 1µF ceramic, 10µF tantalum
Operating Output Current Range
0
Output DC Current-Limit Inception
Output Voltage 10% Low
110
DYNAMIC CHARACTERISTICS
Output Voltage Current Transient
48V, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs
Positive Step Change in Output Current
25% Io.max to 50% Io.max
Negative Step Change in Output Current
50% Io.max to 25% Io.max
Settling Time (within 1% Vout nominal)
Turn-On Transient
Start-Up Time, From On/Off Control
Start-Up Time, From Input
Maximum Output Capacitance
Full load; 5% overshoot of Vout at startup
EFFICIENCY
100% Load
48Vin
60% Load
48Vin
ISOLATION CHARACTERISTICS
Input to Output
Isolation Resistance
10
Isolation Capacitance
FEATURE CHARACTERISTICS
Switching Frequency
ON/OFF Control, Negative Remote On/Off logic
Logic Low (Module On)
Von/off at Ion/off=1.0mA
-0.7
Logic High (Module Off)
Von/off at Ion/off=0.0 µA
3.5
ON/OFF Control, Positive Remote On/Off logic
Logic Low (Module Off)
Von/off at Ion/off=1.0mA
-0.7
Logic High (Module On)
Von/off at Ion/off=0.0 µA
3.5
ON/OFF Current (for both remote on/off logic)
Ion/off at Von/off=0.0V
Leakage Current (for both remote on/off logic)
Logic High, Von/off=12V
Pout
≦
max rated power
Output Voltage Trim Range
-10%
Pout
≦
max rated power
Output Voltage Remote Sense Range
Output Over-Voltage Protection
Over full temperature range
13.8
GENERAL SPECIFICATIONS
MTBF
Io=80% of Io, max; 300LFM @25C
Weight
Without heat-spreader
Weight
With heat-spreader
Over-Temperature Shutdown
Refer to Figure 19 for Hot spot 1 location
( Without heat spreader, Hot spot 1)
(48Vin,80% Io, 200LFM,Airflow from Vin+ to Vin-)
Over-Temperature Shutdown
Refer to Figure 19 for NTC resistor location
( Without heat spreader, NTC Resistor)
Over-Temperature Shutdown
Refer to Figure 21 for Hot spot 2 location
(With heat spreader, Hot spot 2)
(48Vin,80% Io, 200LFM,Airflow from Vin+ to Vin-)
Note: Please attach thermocouple on NTC resistor to test OTP function, the hot spots’ temperature is just for reference.
40
15
200
200
200
40
40
80
80
2000
mV
mV
µs
ms
ms
µF
%
%
2250
Vdc
MΩ
pF
kHz
V
V
V
V
mA
µA
%
%
V
M hours
grams
grams
°C
°C
°C
92.0
90.5
1000
350
400
0.8
12
0.8
12
1
50
10%
10
16.8
15.0
2.2
21.4
33.5
127
123
118
DS_E48SC12008_03192012
2
ELECTRICAL CHARACTERISTICS CURVES
Figure 1:
Efficiency vs. load current for 8A, minimum, nominal,
and maximum input voltage at 25°C
Figure 2:
Power dissipation vs. load current for 8A, minimum,
nominal, and maximum input voltage at 25°C.
Figure 3:
Typical full load input characteristics at room
temperature
DS_E48SC12008_03192012
3
ELECTRICAL CHARACTERISTICS CURVES
For Negative Remote On/Off Logic
Figure 4:
Turn-on transient at full rated load current (CC Mode
load) (10ms/div). Vin=48V.Top Trace: Vout, 5V/div; Bottom
Trace: ON/OFF input, 5V/div
Figure 5:
Turn-on transient at zero load current (10ms/div).
Vin=48V.Top Trace: Vout, 5V/div; Bottom Trace: ON/OFF input,
5V/div
DS_E48SC12008_03192012
4
ELECTRICAL CHARACTERISTICS CURVES
Figure 6:
Output voltage response to step-change in load
current (50%-25%-50% of Io, max; di/dt = 0.1A/µs). Load cap:
10µF, tantalum capacitor and 1µF ceramic capacitor. Top Trace:
Vout (200mV/div, 200us/div), Bottom Trace: I out (2A/div).
Scope measurement should be made using a BNC cable
(length shorter than 20 inches). Position the load between 51
mm to 76 mm (2 inches to 3 inches) from the module
Figure 7:
Output voltage response to step-change in load
current (50%-25%-50% of Io, max; di/dt = 2.5A/µs). Load cap:
10µF, tantalum capacitor and 1µF ceramic capacitor. Top Trace:
Vout (200mV/div, 200us/div), Bottom Trace: I out (2A/div).
Scope measurement should be made using a BNC cable
(length shorter than 20 inches). Position the load between 51
mm to 76 mm (2 inches to 3 inches) from the module
Figure 8:
Test set-up diagram showing measurement points for
Input Terminal Ripple Current and Input Reflected Ripple
Current.
Note: Measured input reflected-ripple current with a simulated
source Inductance (L
TEST
) of 12μH. Capacitor Cs offset possible
battery impedance. Measure current as shown above
DS_E48SC12008_03192012
5
嵌入式系统
