FEATURES
High efficiency: 88% @ 3.3V/ 20A
Size: 58.4mm x 22.8mm x 9.2mm
(2.30”x0.90”x0.36”)
Industry standard pin out
Fixed frequency operation
Input UVLO, Output OCP, OVP, and OTP
2250V isolation
Basic insulation
No minimum load required
SMD and through-hole versions
ISO 9001, TL 9000, ISO 14001, QS 9000,
OHSAS 18001 certified manufacturing
facility
UL/cUL 60950-1 (US & Canada)
Recognized
Delphi Series E36SR, Eighth Brick Family
DC/DC Power Modules: 18~75V in, 3.3V/20A out
The Delphi Series E36SR Eighth Brick, 18~75V 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 66 watts of power or 20A of output
current in an industry standard footprint. 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
OPTIONS
SMT or through-hole versions
Positive on/off logic
Short pin lengths available
Heat spreader option
APPLICATIONS
Telecom / Datacom
Wireless Networks
Optical Network Equipment
Server and Data Storage
Industrial / Testing Equipment
temperature conditions. The Delphi Series converters meet all safety
requirements with basic insulation.
DATASHEET
DS_E36SR3R320_09252012
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
E36SR3R320 (Standard)
Min.
18
Typ.
24/48
Max.
75
100
122
125
2250
75
17.5
16.5
2
4.3
15
1
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
%Io
mV
mV
us
20
20
ms
ms
µF
%
%
Vdc
MΩ
pF
kHz
1.8
18
1.8
18
1
50
10
10
140
3.2
25
127
V
V
V
V
mA
uA
%
%
%Vo
M hours
grams
°C
100ms
Refer to Figure 21 for measuring point
-40
-55
18
16.5
15.5
24/48
17
16
1
80
10
20
60
3.267
3.300
±3.3
±3.3
±16.5
3.234
80
10
0
110
150
150
200
10
10
100% Load, 18Vin
No load, 48Vin
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=18V 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
25% Io.max to 50% Io.max
50% Io.max to 25% Io.max
3.333
±6.6
±6.6
3.366
20
140
Full load; 5% overshoot of Vout at startup
Vin=48V; Tc=25°C
5000
88
89
2250
10
1500
300
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℃
Bare module without heat-sink
Refer to Figure 21 for measuring point
0
2.4
0
2.4
-10
115
DS_E36SR3R320_09252012
2
ELECTRICAL CHARACTERISTICS CURVES
Efficiency Curves
93
90
87
84
81
78
75
72
69
66
63
60
0
2
4
6
8
10
12
14
16
18
20
Power Dissipation Curves
12
10
Power loss(W)
8
6
4
2
0
0
2
4
6 8 10 12 14 16 18 20
Output current(A)
18V
24V
48V
75V
Efficiency(%)
18V
24V
48V
75V
Output current(A)
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.
5
4
In p u t c u rre n t (A )
3
2
1
0
15
25
35
45
Input voltage (V)
Figure 3:
Typical full load input characteristics at room
temperature.
55
65
75
DS_E36SR3R320_09252012
3
ELECTRICAL CHARACTERISTICS CURVES
Figure 4:
Turn-on transient at full rated load current (CC mode)
(5ms/div). Vin=48V.Top Trace: Vout, 1V/div; Bottom Trace:
ON/OFF input, 5V/div.
Figure 5:
Turn-on transient at zero load current (5ms/div).
Vin=48V.Top Trace: Vout, 2V/div; Bottom Trace: ON/OFF input,
5V/div.
Figure 6:
Turn-on transient at full rated load current (CC mode)
(5ms/div). Vin=48V.Top Trace: Vout, 2V/div; Bottom Trace:
input voltage, 20V/div.
Figure 7:
Turn-on transient at zero load current (5ms/div).
Vin=48V.Top Trace: Vout, 2V/div; Bottom Trace: input voltage,
20V/div.
DS_E36SR3R320_09252012
4
ELECTRICAL CHARACTERISTICS CURVES
Figure 8:
Output voltage response to step-change in load
current (50%-25% of Io, max; di/dt = 0.1A/µs). Load cap: 10µF,
tantalum capacitor and 1µF ceramic capacitor. Top Trace: Vout
(100mV/div, 100us/div), Bottom Trace: I out (5A/div).
Figure 9:
Output voltage response to step-change in load
current (25%-50% of Io, max; di/dt = 0.1A/µs). Load cap: 10µF,
tantalum capacitor and 1µF ceramic capacitor. Top Trace: Vout
(100mV/div, 10us/div), Bottom Trace: I out (5A/div).
Figure 10:
Test set-up diagram showing measurement points
for Input Terminal Ripple Current and Input Reflected Ripple
Current.
Figure 11:
Input Terminal Ripple Current, i
c
, at 48Vin and 20
output current with 12µH source impedance and 33µF
electrolytic capacitor (500 mA/div, 2us/div).
DS_E36SR3R320_09252012
5
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