FEATURES
High efficiency: 89.5% @2.5V/35A
Size:
58.4mm x 22.8mm x9.5mm
(2.30”x0.90”x0.37”)
Industry standard pin out
Fixed frequency operation
Input UVLO, Output OTP, OCP, OVP
Monotonic startup into normal and
pre-biased loads
2250V Isolation and basic insulation
No minimum load required
No negative current during power or enable
on/off
ISO 9001, TL 9000, ISO 14001, QS 9000,
OHSAS 18001 certified manufacturing
facility
UL/cUL 60950 (US & Canada) recognized,
and TUV (EN60950) certified - pending
CE mark meets 73/23/EEC and 93/68/EEC
directive - pending
Delphi Series E48SH, 120W Eighth Brick Family
DC/DC Power Modules: 48V in, 2.5V/35A out
The Delphi Series E48SH Eighth Brick, 48V input, single output,
isolated DC/DC converters are the latest offering from a world leader in
power systems technology and manufacturing
―
Delta Electronics, Inc.
This product family is available in either a through-hole or
surface-mounted package and provides up to 120 watts of power or
50A of output current (1.2V and below) in an industry standard footprint
and pinout. The E48SH converter operates from an input voltage of
36V to 75V and is available in output voltages from 1.0V to 15V.
Efficiency is 89.5% for 2.5V output at 35A 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
External Synchronization
Output OVP latch mode
Heat spreader
APPLICATIONS
Telecom/DataCom
Wireless Networks
Optical Network Equipment
Server and Data Storage
Industrial/Test Equipment
DATASHEET
DS_E48SH2R535_02272007
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 Temperature
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)
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
Settling 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)
Leakage Current (for both remote on/off logic)
Output Voltage Trim Range
Output Voltage Remote Sense Range
Output Over-Voltage Protection
GENERAL SPECIFICATIONS
MTBF
Weight
Over-Temperature Shutdown
NOTES and CONDITIONS
E48SH2R535 (Standard)
Min.
Typ.
Max.
75
100
128
125
2250
75
34
32
2
50
4
1
35
33
3
3.4
Units
Vdc
Vdc
°C
°C
Vdc
Vdc
Vdc
Vdc
Vdc
A
mA
mA
A
2
s
mA
dB
Vdc
mV
mV
mV
V
mV
mV
A
%
mV
mV
us
ms
ms
µF
%
%
2250
10
1500
250
Vdc
MΩ
pF
kHz
1.2
50
1.2
50
1
50
10
10
140
TBD
25
135
V
V
V
V
mA
uA
%
%
%
M hours
grams
°C
100ms
Refer to Figure 21 for measuring point
-40
-55
36
33
31
1
100% Load, 36Vin
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 115°C
over sample load, line and temperature
5Hz to 20MHz bandwidth
Full Load, 1µF ceramic, 10µF tantalum
Full Load, 1µF ceramic, 10µF tantalum
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
2.475
20
50
2.5
±3
±3
±15
2.463
30
10
0
105
60
60
100
15
15
2.525
±10
±10
2.538
60
20
35
135
Full load; no overshoot of Vout at startup
89.5
91
10000
Von/off at Ion/off=1.0mA
Von/off at Ion/off=0.0 µA
Von/off at Ion/off=1.0mA
Von/off at Ion/off=0.0 µA
Ion/off at Von/off=0.0V
Logic High, Von/off=15V
Across Pins 9 & 5, Pout
≦
max rated power
Pout
≦
max rated power
Over full temp range; % of nominal Vout
Io=80% of Io, max; 300LFM @25℃
Refer to Figure 21 for measuring point
3
3
-20
120
E48SH2R535_02272007
2
ELECTRICAL CHARACTERISTICS CURVES
Figure 1:
Efficiency vs. load current for minimum, nominal, and
maximum input voltage at 25°C
Figure 2:
Power dissipation vs. load current for minimum,
nominal, and maximum input voltage at 25°C.
Figure 3:
Typical full load input characteristics at room
temperature
E48SH2R535_02272007
3
ELECTRICAL CHARACTERISTICS CURVES
For Negative Remote On/Off Logic
0
0
0
0
Figure 4:
Turn-on transient at zero load current (2 ms/div).
Vin=48V.Top Trace: Vout, 1V/div; Bottom Trace: ON/OFF input,
5V/div
Figure 5:
Turn-on transient at full rated load current (constant
current load) (2 ms/div). Vin=48V.Top Trace: Vout, 1V/div;
Bottom Trace: ON/OFF input, 5V/div
For Input Voltage Start up
0
0
0
0
Figure 6:
Turn-on transient at zero load current (2 ms/div).
Vin=48V.Top Trace: Vout, 1V/div, Bottom Trace: input voltage,
50V/div
Figure 7:
Turn-on transient at full rated load current (constant
current load) (2 ms/div). Vin=48V.Top Trace: Vout, 1V/div;
Bottom Trace: input voltage, 50V/div
E48SH2R535_02272007
4
ELECTRICAL CHARACTERISTICS CURVES
0
0
Figure 8:
Output voltage response to step-change in load
current (75%-50% of Io, max; di/dt = 0.1A/µs). Load cap: 10µF,
tantalum capacitor and 1µF ceramic capacitor. Trace: Vout
(20mV/div, 100us/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 9:
Output voltage response to step-change in load
current (50%-75% of Io, max; di/dt = 0.1A/µs). Load cap: 10µF,
tantalum capacitor and 1µF ceramic capacitor. Trace: Vout
(20mV/div, 100us/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..
0
Figure 10:
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 above
Figure 11:
Input Terminal Ripple Current, i
c
, at full rated output
current and nominal input voltage with 12µH source impedance
and 33µF electrolytic capacitor (200 mA/div, 2us/div).
E48SH2R535_02272007
5
