DELTA E36SR12004NKFA

FEATURES

High efficiency: 90.5% @ 12V/4A

Size:
58.4x22.8x8.73mm (2.30”x0.90”x0.34”)

Standard footprint

Industry standard pin out

Fixed frequency operation

Input UVLO, Output OCP, OVP, OTP

1500V isolation and basic insulation

ISO 9001, TL 9000, ISO 14001, QS9000,
OHSAS18001 certified manufacturing
facility

UL/cUL 60950-1 (US & Canada)
recognized
Delphi E36SR Series DC/DC Power Modules:
18~60 in, 12V/4A out, 48W
OPTIONS
The Delphi E36SR series, Eighth brick sized, 24V/48V input, single

Positive On/Off logic
output, isolated DC/DC converter, is the latest offering from a world
leader in power system technology and manufacturing ― Delta
Electronics, Inc. The E36SR12V provides up to 48 watts of power in an
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
APPLICATIONS
requirements with basic insulation.

Telecom/Datacom

Wireless Networks

Optical Network Equipment

Server and Data Storage

Industrial/Test Equipment
DATASHEET
DS_E36SR12004_10292013
TECHNICAL SPECIFICATIONS
(TA=25°C, airflow rate=300 LFM, Vin=24/48Vdc, nominal Vout unless otherwise noted.)
PARAMETER
NOTES and CONDITIONS
E36SR12004
Min.
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous
Transient (100ms)
Operating Ambient 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 Over Current Protection
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
Io from2.8A o 4A
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 Over-Voltage Protection
GENERAL SPECIFICATIONS
MTBF
Units
60
100
85
125
1500
Vdc
Vdc
°C
°C
Vdc
60
Vdc
18
16
3
3.5
120
10
1
Vdc
Vdc
Vdc
A
mA
mA
2
As
mA
dB
12.000
12.180
Vdc
±24
±24
±48
±48
±180
12.2
mV
mV
mV
Vdc
50
100
25
4
5.6
mV
mV
A
A
200
200
100
400
400
mV
mV
us
15
15
25
25
2000
ms
ms
µF
-40
-55
18
16
14
1
17
15
2
30
3
60
100% Load, 18Vin
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 60V
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
20
50
11.820
11.8
0.4
4.4
48V, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs
50% Io.max to 75% Io.max
75% Io.max to 50% Io.max
Full load; 5% overshoot of Vout at startup
Vin From 18v to 55v
89.5
.
%
1500
10
1000
Vdc
MΩ
pF
300
kHz
Von/off at Ion/off=1.0mA
Von/off at Ion/off=0.0 µA
0
3
0.8
12
V
V
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=12V
0
3.5
0.8
12
1
50
V
V
mA
uA
13.2
16.8
V
Over full temp range;
Io=100% of Io, max; Ta=25°C, airflow
rate=200FLM
Refer to Figure 21 for Hot spot location
(48Vin,80%Io, 200LFM,Airflow from Vin- to Vin+)
Over-Temperature Shutdown (NTC Resistor)
Refer to Figure 21 for NTC resistor location
Note: Please attach thermocouple on NTC resistor to test OTP function, the hot spot’s temperature is just for reference.
DS_E36SR12004_10292013
Max.
100ms
Weight
Over-Temperature Shutdown (Hot Spot)
Typ.
6.48
M hours
22.9
Grams
124
°C
120
°C
2
ELECTRICAL CHARACTERISTICS CURVES
5.5
90
5.0
88
4.5
86
4.0
84
LOSS(W)
EFFICIENCY(%).
92
82
80
18V
24V
55V
48
78
76
3.5
3.0
2.5
18V
24V
55V
48v
2.0
1.5
74
1.0
72
0.4
0.8
1.2
1.6
2.0
2.4
2.8
3.2
3.6
4.0
4.4
OUTPUT CURRENT(A)
0.0
0.4
0.8
1.2
1.6
2.0
2.4
2.8
3.2
3.6
4.0
4.4
OUTPUT CURRENT(A)
Figure 1: Efficiency vs. load current for minimum, nominal, and
maximum input voltage at 25°C, 300LFM airflow.
Figure 2: Power dissipation vs. load current for minimum,
nominal, and maximum input voltage at 25°C, 300LFM airflow.
3.6
INPUT CURRENT(A)
3.2
2.8
2.4
2.0
1.6
1.2
0.8
0.4
0.0
12
17
22
27
32
37
42
INPUT VOLTAGE(V)
47
52
57
Figure 3: Typical full load input characteristics at 25°C
DS_E36SR12004_10292013
3
ELECTRICAL CHARACTERISTICS CURVES
For Input Voltage On/Off
Figure 4: Turn-on transient at full rated load current (5ms/div).
Vin=48V. Top Trace: Input Voltage, 20V/div; Bottom Trace:
Vout, 5V/div
Figure 5: Turn-on transient at min load current (5ms/div).
Vin=48V. Top Trace: Input Voltage, 20V/div; Bottom Trace:
Vout, 5V/div
For negative On/Off Logic
Figure 6: Turn-on transient at full rated load current (5ms/div)
for negative on/off mode. Vin=48V. Top Trace: Vout, 5V/div;
Bottom Trace: ON/OFF input, 5V/div
DS_E36SR12004_10292013
Figure 7: Turn-on transient at min load current (5ms/div) for
negative on/off mode. Vin=48V. Top Trace: Vout, 5V/div; Bottom
Trace: ON/OFF input, 5V/div
4
ELECTRICAL CHARACTERISTICS CURVES
Figure 8: Output voltage response to step-change in load
current (75%-50%-75% of Io, max; di/dt = 0.01A/µs). Load cap:
10µF tantalum capacitor and 1µF ceramic capacitor. Top Trace:
Vout (0.1V/div, 1ms/div), Bottom Trace: Iout (1A/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 (75%-50%-75% of Io, max; di/dt = 2.5A/µs). Load cap:
47µF, 35m ESR solid electrolytic capacitor and 1µF ceramic
capacitor. Top Trace: Vout (0.1 V/div, 1ms/div), Bottom Trace:
Iout (1A/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 (LTEST) of 12 μH. Capacitor Cs offset
possible battery impedance. Measured current as shown below
Figure 11: Input Terminal Ripple Current, ic, at full rated output
current and nominal input voltage with 12µH source impedance
and 33µF electrolytic capacitor (200mA/div, 2us/div)
DS_E36SR12004_10292013
5
ELECTRICAL CHARACTERISTICS CURVES
Copper
Strip
Vo(+)
10u
SCOPE
1u
RESISTIVE
LOAD
Vo(-)
Figure 12: Input reflected ripple current, is, through a 12µH
source inductor at nominal input voltage and rated load current
(100 mA/div, 2us/div)
Figure 13: Output voltage noise and ripple measurement test
setup
13
12
OUTPUT VOLTAGE(V)
11
10
9
8
7
6
5
4
3
2
0.4
0.9
1.4
1.9
2.4
2.9
3.4
3.9
4.4
4.9
5.4
5.9
OUTPUT CURRENT(A)
Figure 14: Output voltage ripple at nominal input voltage and
rated load current (Io=4A)(20mV/div, 2us/div)
Load capacitance: 1µF ceramic capacitor and 10µF tantalum
capacitor. Bandwidth: 20 MHz. Scope measurements 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.
DS_E36SR12004_10292013
Figure 15: Output voltage vs. load current showing typical
current limit curves and converter shutdown points
6
DESIGN CONSIDERATIONS
Input Source Impedance
The impedance of the input source connecting to the
DC/DC power modules will interact with the modules and
affect the stability. A low ac-impedance input source is
recommended. If the source inductance is more than a
few μH, we advise adding a 10 to 100 μF electrolytic
capacitor (ESR < 0.7 Ω at 100 kHz) mounted close to the
input of the module to improve the stability.
Layout and EMC Considerations
Delta’s DC/DC power modules are designed to operate
in a wide variety of systems and applications. For design
assistance with EMC compliance and related PWB
layout issues, please contact Delta’s technical support
team. An external input filter module is available for
easier EMC compliance design. Application notes to
assist designers in addressing these issues are pending
to release.
Safety Considerations
The power module must be installed in compliance with
the spacing and separation requirements of the
end-user’s safety agency standard, i.e., UL60950-1, CSA
C22.2 NO. 60950-1 2nd and IEC 60950-1 2nd : 2005 and
EN 60950-1 2nd: 2006+A11+A1: 2010, if the system in
which the power module is to be used must meet safety
agency requirements.
Basic insulation based on 60 Vdc input is provided
between the input and output of the module for the
purpose of applying insulation requirements when the
input to this DC-to-DC converter is identified as TNV-2 or
SELV. An additional evaluation is needed if the source
is other than TNV-2 or SELV.
When the input source is SELV circuit, the power module
meets SELV (safety extra-low voltage) requirements. If
the input source is a hazardous voltage which is greater
than 60 Vdc and less than or equal to 60 Vdc, for the
module’s output to meet SELV requirements, all of the
following must be met:
DS_E36SR12004_10292013

The input source must be insulated from the ac
mains by reinforced or double insulation.

The input terminals of the module are not operator
accessible.

A SELV reliability test is conducted on the system
where the module is used, in combination with the
module, to ensure that under a single fault,
hazardous voltage does not appear at the module’s
output.
When installed into a Class II equipment (without
grounding), spacing consideration should be given to the
end-use installation, as the spacing between the module
and mounting surface have not been evaluated.
The power module has extra-low voltage (SELV) outputs
when all inputs are SELV.
This power module is not internally fused. To achieve
optimum safety and system protection, an input line fuse
is highly recommended. The safety agencies require a
normal-blow fuse with 10A maximum rating to be
installed in the ungrounded lead. A lower rated fuse can
be used based on the maximum inrush transient energy
and maximum input current.
Soldering and Cleaning Considerations
Post solder cleaning is usually the final board assembly
process before the board or system undergoes electrical
testing. Inadequate cleaning and/or drying may lower the
reliability of a power module and severely affect the
finished circuit board assembly test. Adequate cleaning
and/or
drying
are
especially
important
for
un-encapsulated and/or open frame type power modules.
For assistance on appropriate soldering and cleaning
procedures, please contact Delta’s technical support
team.
7
FEATURES DESCRIPTIONS
Vi(+)
Over-Current Protection
Sense(+)
ON/OFF
The modules include an internal output over-current
protection circuit, which will endure current limiting for
an unlimited duration during output overload. If the
output current exceeds the OCP set point, the modules
will automatically shut down (hiccup mode).
The modules will try to restart after shutdown. If the
overload condition still exists, the module will shut down
again. This restart trial will continue until the overload
condition is corrected.
Over-Voltage Protection
The modules include an internal output over-voltage
protection circuit, which monitors the voltage on the
output terminals. If this voltage exceeds the
over-voltage set point, the module will shut down
(Hiccup mode). The modules will try to restart after
shutdown. If the fault condition still exists, the module
will shut down again. This restart trial will continue until
the fault condition is corrected.
Sense(-)
Vi(-)
Vo(-)
Figure 16: Remote on/off implementation
Remote Sense
Remote sense compensates for voltage drops on the
output by sensing the actual output voltage at the point
of load. The voltage between the remote sense pins
and the output terminals must not exceed the output
voltage sense range given here:
[Vo(+) – Vo(–)] – [SENSE(+) – SENSE(–)] ≤ 10% × Vout
This limit includes any increase in voltage due to
remote sense compensation
Over-Temperature Protection
Vi(+)
Vo(+)
Sense(+)
The over-temperature protection consists of circuitry
that provides protection from thermal damage. If the
temperature exceeds the over-temperature threshold
the module will shut down.
The module will try to restart after shutdown. If the
over-temperature condition still exists during restart, the
module will shut down again. This restart trial will
continue until the temperature is within specification.
Vo(+)
Sense(-)
Vi(-)
Contact
Resistance
Vo(-)
Contact and Distribution
Losses
Figure 17: Effective circuit configuration for remote sense
operation
Remote On/Off
The remote on/off feature on the module can be either
negative or positive logic. Negative logic turns the
module on during a logic low and off during logic high.
Positive logic turns the modules on during logic high and
off during logic low.
Remote on/off can be controlled by an external switch
between the on/off terminal and the Vi(-) terminal. The
switch can be an open collector or open drain.
For negative logic if the remote on/off feature is not
used, please short the on/off pin to Vi(-). For positive
logic if the remote on/off feature is not used, please
leave the on/off pin floating.
DS_E36SR12004_10292013
If the remote sense feature is not used to regulate the
output at the point of load, please connect SENSE(+) to
Vo(+) and SENSE(–) to Vo(–) at the module.
The output voltage can be increased by the remote
sense; When using the remote sense the output voltage
of the module is usually increased, which increases the
power output of the module with the same output
current.
Care should be taken to ensure that the maximum
output power does not exceed the maximum rated
power.
8
Output Voltage Adjustment (TRIM)
To increase or decrease the output voltage set point,
connect an external resistor between the TRIM pin
and either the SENSE(+) or SENSE(-). The TRIM
pin should be left open if this feature is not used.
If the external resistor is connected between the TRIM
and SENSE (+) the output voltage set point increases
(Fig. 19). The external resistor value required to obtain
a percentage output voltage change △% is defined
as:
Rtrim  up 
5.1Vo (100   ) 510

 10K 
1.225

Ex. When Trim-up +10% (12V×1.1=13.2V)
Rtrim  up 
5.1  12  (100  10 ) 510

 10  488.55K 
1.225  10
10
The output voltage can be increased by both the remote
sense and the trim, however the maximum increase is
the larger of either the remote sense or the trim, not the
sum of both.
Figure 18: Circuit configuration for trim-down (decrease
output voltage)
If the external resistor is connected between the
TRIM and SENSE (-) pins, the output voltage set
point decreases (Fig. 18). The external resistor
value required to obtain a percentage of output
voltage change △% is defined as:
Rtrim  down 
When using remote sense and trim, the output voltage
of the module is usually increased, which increases the
power output of the module with the same output
current.
Care should be taken to ensure that the maximum
output power of the module remains at or below the
maximum rated power.
510
 10K 

Ex. When Trim-down -20% (12V×0.8=9.6V)
510
Rtrim  down 
 10  15.5K 
20
Figure 19: Circuit configuration for trim-up (increase output
voltage
DS_E36SR12004_10292013
9
THERMAL CONSIDERATIONS
Thermal management is an important part of the system
design. To ensure proper, reliable operation, sufficient
cooling of the power module is needed over the entire
temperature range of the module. Convection cooling is
usually the dominant mode of heat transfer.
THERMAL CURVES
NTC RESISTOR
HOT SPOT
Hence, the choice of equipment to characterize the
thermal performance of the power module is a wind
tunnel.
Thermal Testing Setup
Delta’s DC/DC power modules are characterized in
heated vertical wind tunnels that simulate the thermal
environments encountered in most electronics
equipment. This type of equipment commonly uses
vertically mounted circuit cards in cabinet racks in which
the power modules are mounted.
The following figure shows the wind tunnel
characterization setup. The power module is mounted
on a test PWB and is vertically positioned within the
wind tunnel. The space between the neighboring PWB
and the top of the power module is constantly kept at
6.35mm (0.25’’).
AIRFLOW
Figure 21: * Hot spot& NTC resistor temperature measured points.
Output Current (A)
4.5
E36SR12004(Standard) Output Current vs. Ambient Temperature and Air Velocity
@Vin = 24V (Transverse Orientation)
4.0
3.5
Natural
Convection
3.0
100LFM
200LFM
2.5
300LFM
2.0
400LFM
1.5
PWB
FANCING PWB
1.0
MODULE
0.5
0.0
25
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (℃)
Figure 22: Output current vs. ambient temperature and air
[email protected]=24V (Transverse orientation,airflow from Vin- to Vin+)
50.8(2.00")
AIR VELOCITY
AND AMBIENT
TEMPERATURE
SURED BELOW
THE MODULE
Output Current (A)
4.5
E36SR12004(Standard) Output Current vs. Ambient Temperature and Air Velocity
@Vin = 48V (Transverse Orientation)
4.0
AIR FLOW
Natural
Convection
3.5
100LFM
3.0
200LFM
Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches)
2.5
300LFM
2.0
Figure 20: Wind tunnel test setup
Thermal Derating
Heat can be removed by increasing airflow over the
module. To enhance system reliability, the power module
should always be operated below the maximum
operating temperature. If the temperature exceeds the
maximum module temperature, reliability of the unit may
be affected.
DS_E36SR12004_10292013
1.5
1.0
0.5
0.0
25
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (℃)
Figure 23: Output current vs. ambient temperature and air
[email protected]=48V (Transverse orientation, airflow from Vin- to Vin+)
10
MECHANICAL DRAWING (WITHOUT HEAT SPREADER)
NOTE: have a typical height of the lowest component (who has to dissipate) of 7.25mm with a tolerance
plus max height module/minus 0 mm.
Pin No.
1
2
3
4
5
6
7
8
Name
+Vin
ON/OFF
-Vin
-Vout
-Sense
Trim
+Sense
+Vout
Function
Positive input voltage
Remote ON/OFF
Negative input voltage
Negative output voltage
Negative remote sense
Output voltage trim
Positive remote sense
Positive output voltage
Pin Specification:
Pins 1-3,5-7
Pins 4 & 8
1.00mm (0.040”) diameter
2. 1.50mm (0.059”) diameter
Note:All pins are copper alloy with matte-tin(Pb free) plated over Nickel underplating.
DS_E36SR12004_10292013
11
PART NUMBERING SYSTEM
E
36
S
R
120
04
N
K
Form
Input
Number of
Product
Output
Output
ON/OFF
Pin
Factor
Voltage
Outputs
Series
Voltage
Current
Logic
Length
24/48-
S- Single
12V
4A
N- Negative
K-0.11’’
E- Eighth
Brick
18V~60V
R – Regular
product
F
A
Option Code
Space- RoHs 5/6 A- Standard Functions
F- RoHS 6/6
(Lead Free)
CONTACT: www.deltaww.com/dcdc
USA:
Telephone:
East Coast: 978-656-3993
West Coast: 510-668-5100
Fax: (978) 656 3964
Email: [email protected]
Europe:
Phone: +31-20-655-0967
Fax: +31-20-655-0999
Email: [email protected]
Asia & the rest of world:
Telephone: +886 3 4526107 x 6220~6224
Fax: +886 3 4513485
Email: [email protected]
WARRANTY
Delta offers a two (2) year limited warranty. Complete warranty information is listed on our web site or is available upon
request from Delta.
Information furnished by Delta is believed to be accurate and reliable. However, no responsibility is assumed by Delta for its
use, nor for any infringements of patents or other rights of third parties, which may result from its use. No license is granted
by implication or otherwise under any patent or patent rights of Delta. Delta reserves the right to revise these specifications
at any time, without notice.
DS_E36SR12004_10292013
12