`
FEATURES
High efficiency: 94.5% @12V/20A
Size:
58.4mm x 22.8mm x 10.9mm
(2.30”x0.90”x0.43”) W/O Heat spreader
58.4mm x 22.8mm x 12.7mm
(2.30”x0.90”x0.5”) 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
The Delphi Series E48SP, 36~75V input, Eighth Brick, single output,
isolated DC/DC converters are the latest offering from a world leader in
power systems technology and manufacturing
―
Delta Electronics,
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
optimization 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
temperature conditions. The Delphi Series converters meet all safety
requirements with basic insulation.
OPTIONS
Positive On/Off logic
Short pin lengths available
APPLICATIONS
Telecom/DataCom
Wireless Networks
Optical Network Equipment
Server and Data Storage
Industrial/Test Equipment
DATASHEET
DS_E48SP12020_08022010
TECHNICAL SPECIFICATIONS
(T
A
=25°C, airflow rate=300 LFM, V
in
=48Vdc, nominal Vout unless otherwise noted.)
PARAMETER
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous
Transient (100ms)
Operating Case Temperature (Without heat spreader)
Operating Case Temperature (With heat spreader)
Storage Temperature
Input/Output Isolation Voltage
INPUT CHARACTERISTICS
Operating Input Voltage
Input Under-Voltage Lockout
Turn-On Voltage Threshold
Turn-Off Voltage Threshold
Lockout Hysteresis Voltage
Maximum Input Current
No-Load Input Current
Off Converter Input Current
Inrush Current(I
2
t)
Start up Current
Input Terminal Ripple Current
Input Reflected-Ripple Current
Input Voltage Ripple Rejection
OUTPUT CHARACTERISTICS
Output Voltage Set Point
Output Voltage Regulation
Over Load
Over Line
Over Temperature
Total Output Voltage Range
Output Voltage Ripple and Noise
Peak-to-Peak
RMS
Operating Output Current Range
Output DC Current-Limit Inception
DYNAMIC CHARACTERISTICS
Output Voltage Current Transient
Positive Step Change in Output Current
Negative Step Change in Output Current
Setting Time (within 1% Vout nominal)
Turn-On Transient
Start-Up Time, From On/Off Control
Start-Up Time, From Input
Maximum Output Capacitance
EFFICIENCY
100% Load
60% Load
ISOLATION CHARACTERISTICS
Input to Output
Isolation Resistance
Isolation Capacitance
FEATURE CHARACTERISTICS
Switching Frequency
ON/OFF Control, Negative Remote On/Off logic
Logic Low (Module On)
Logic High (Module Off)
ON/OFF Control, Positive Remote On/Off logic
Logic Low (Module Off)
Logic High (Module On)
ON/OFF Current (for both remote on/off logic)
ON/OFF Current (for both remote on/off logic)
Leakage Current (for both remote on/off logic)
Output Over-Voltage Protection
GENERAL SPECIFICATIONS
MTBF
Weight
Weight
Over-Temperature Shutdown ( Without heat spreader)
Over-Temperature Shutdown
(With heat spreader)
NOTES and CONDITIONS
E48SP12020 (Standard)
Min.
Typ.
Max.
80
100
122
110
125
2250
75
34
32
2
7
70
8
7
0.16
6
60
11.67
11.85
35.5
33.5
3
7.8
150
12
1
12
0.24
Units
Vdc
Vdc
°C
°C
°C
Vdc
Vdc
Vdc
Vdc
Vdc
A
mA
mA
A
2
s
A
A
mA
dB
Vdc
mV
mV
mV
V
mV
mV
A
%
mV
mV
µs
ms
ms
µF
%
%
2250
10
1500
220
Vdc
MΩ
pF
kHz
0.8
50
0.8
50
1
50
18
1.19
29.1
39.2
132
120
V
V
V
V
mA
µA
µA
V
M hours
grams
grams
°C
°C
100ms
Refer to figure 18 for measuring point
Refer to figure 20 for measuring point
-40
-40
-55
36
32.5
30.5
1
Vin=36V, 100% Load,
With 100uF external input capacitor
Peak, Vin=36V, 100% Load, With 5000uF Co
RMS, Vin=48V, With 100uF input cap.
P-P thru 12µH inductor, 5Hz to 20MHz
120 Hz
Vin=48V, Io=Io.max, Tc=25°C
Io=Io,min to Io,max
Vin=36V to 75V
Tc=-40°C to 125°C
over sample load, and temperature
5Hz to 20MHz bandwidth
Full Load, 1µF ceramic, 10µF tantalum
Full Load, 1µF ceramic, 10µF tantalum
Full input voltage range
Output Voltage 10% Low
48V, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs
50% Io.max to 75% Io.max
75% Io.max to 50% Io.max
11.5
12.02
+20
+15
±120
11.85
100
40
12.2
200
80
20
150
400
400
200
40
40
5000
0
110
200
200
30
30
Full load; no overshoot of Vout at startup
Vin=48V
Vin=48V
93.5
94
94.5
95
Von/off
Von/off
Von/off
Von/off
Ion/off at Von/off=0.0V
Ion/off at Von/off=2.4V
Logic High, Von/off=15V
Over full temp range; % of nominal Vout
Io=100% of Io, max; 300LFM; Ta=25°C
Open frame
With heat spreader
Refer to figure 18 for measuring point
Refer to figure 20 for measuring point
-0.7
2.4
-0.7
2.4
10
14.6
DS_E48SP12020_08022010
2
ELECTRICAL CHARACTERISTICS CURVES
96
95
94
93
Efficiency(%)
92
91
90
89
88
87
86
2
4
6
8
10
12
14
16
18
20
Output Current(A)
36V
48V
75V
20
18
16
14
Power Loss(W)
12
10
8
6
4
2
0
0
2
4
6
8
10
12
14
16
18
20
Output Current(A)
36V
48V
75V
Figure 1:
Efficiency vs. load current for minimum, nominal, and
maximum input voltage at 25°C
8
7
Figure 2:
Power dissipation vs. load current for minimum, nominal,
and maximum input voltage at 25°C
15
12
6
5
4
3
2
1
0
30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76
0
0
5
10
15
Output Current(A)
20
25
30
Output Voltage(V)
Input current(A)
9
6
3
Input voltage(V)
Figure 3:
Typical full load input characteristics at room
temperature
Figure 4:
Output voltage regulation vs load current showing typical
current limit curves and converter shutdown points for minimum,
nominal, and maximum input voltage at room temperature
DS_E48SP12020_08022010
3
ELECTRICAL CHARACTERISTICS CURVES
For Negative Remote On/Off Logic
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
Figure 6:
Turn-on transient at full rated load current (constant
current load) (10 ms/div). Vin=48V. Top Trace: Vout, 5V/div;
Bottom Trace: ON/OFF input, 5V/div
For Input Voltage Start up
Figure 7:
Turn-on transient at zero load current (10 ms/div).
Vin=48V. Top Trace: Vout, 5V/div, Bottom Trace: input voltage,
30V/div
Figure 8:
Turn-on transient at full rated load current (constant
current load) (10 ms/div). Vin=48V. Top Trace: Vout, 5V/div;
Bottom Trace: input voltage, 30V/div
DS_E48SP12020_08022010
4
ELECTRICAL CHARACTERISTICS CURVES
Figure 9:
Output voltage response to step-change in load
current (75%-50% of Io, max; di/dt = 0.1A/µs, Vin=48V). Load
cap: 10µF, tantalum capacitor and 1µF ceramic capacitor. Top
Trace: Vout (80mV/div, 200us/div); Bottom Trace: Io (10A/div,
200us/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 10:
Output voltage response to step-change in load
current (50%-75% of Io, max; di/dt = 0.1A/µs, Vin=48V). Load
cap: 10µF, tantalum capacitor and 1µF ceramic capacitor. Top
Trace: Vout (80mV/div, 200us/div); Bottom Trace: Io (10A/div,
200us/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..
is
ic
Vin+
+
Cs: 220uF
100uF,
+
Vin-
ESR=0.2 ohm @
25
o
C 100KHz
Figure 11:
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 12 µH. Capacitor Cs offset
possible battery impedance. Measure current as shown below
Figure 12:
Input Terminal Ripple Current, i
c
, at full rated output
current and nominal input voltage with 12µH source impedance
and 100µF electrolytic capacitor (200 mA/div, 2us/div).
DS_E48SP12020_08022010
5
Analogue and Mixed Signal
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