`
FEATURES
High efficiency: 86.5% @1.2V/50A
Size:
58.4mm x 22.8mm x 9.5mm
(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
Secondary side control, very fast transient
response
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
CE mark meets 73/23/EEC and 93/68/EEC
directive
Delphi Series E48SH, 120W Eighth Brick Family
DC/DC Power Modules: 48V in, 1.2V/50A 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 up to 86.5% for 1.2V
output at 50A 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
Output OCP latch mode
Heat spreader
APPLICATIONS
Telecom/DataCom
Wireless Networks
Optical Network Equipment
Server and Data Storage
Industrial/Test Equipment
DATASHEET
DS_E48SH1R250_11012013
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
2
Inrush Current(I 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
E48SH1R250 (Standard)
Min.
Typ.
Max.
Units
80
100
130
125
2250
75
34
32
2
50
3
1
35
33
3
2.3
Vdc
Vdc
°C
°C
Vdc
Vdc
Vdc
Vdc
Vdc
A
mA
mA
2
As
mA
dB
Vdc
mV
mV
mV
V
mV
mV
A
%
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 85°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
1.188
20
50
1.20
±3
±3
±15
1.176
50
10
0
105
1.212
±10
±10
1.224
110
20
50
135
25
25
100
13
13
mV
mV
us
ms
ms
µF
%
%
2250
10
Vdc
MΩ
pF
kHz
1.2
50
1.2
50
1
50
10
10
130
V
V
V
V
mA
uA
%
%
%
M hours
grams
°C
Full load; no overshoot of Vout at startup
86.5
89.5
40000
1000
240
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
118
4.66
25
135
E48SH1R250_11012013
2
ELECTRICAL CHARACTERISTICS CURVES
Figure 1:
Efficiency vs. load current for minimum, nominal, and
maximum input voltage at 25°C
3
2.5
2
1.5
1
0.5
0
30 34 38 42 46 50 54 58 62 66 70 74 78
INPUT VOLTAGE(V)
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
E48SH1R250_11012013
INPU T CURRENT(A)
3
ELECTRICAL CHARACTERISTICS CURVES
For Negative Remote On/Off Logic
Figure 4:
Turn-on transient at zero load current (5ms/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) (5ms/div). Vin=48V.Top Trace: Vout, 1V/div;
Bottom Trace: ON/OFF input, 5V/div
For Input Voltage Start up
Figure 6:
Turn-on transient at zero load current (5 ms/div).
Vin=48V.Bottom Trace: Vout, 1V/div, Top Trace: input voltage,
5V/div
Figure 7:
Turn-on transient at full rated load current (constant
current load) (5 ms/div). Vin=48V. Bottom Trace: Vout, 1V/div;
Top Trace: input voltage,5V/div
E48SH1R250_11012013
4
ELECTRICAL CHARACTERISTICS CURVES
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..
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).
E48SH1R250_11012013
5
京公网安备 11010802033920号
EEWORLD
