f
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Delphi Series E36SR, 75W Eighth Brick Family
DC/DC Power Modules: 18~75V in, 5V/15A 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 operates from an extremely wide 18~75V input range
and provides up to 75 watts of power in an industry standard eighth brick
footprint and pinout. With creative design technology and optimization o
component placement, these converters possess outstanding electrical
and thermal performances, as well as extremely high reliability unde
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.
FEATURES
High efficiency: 89% @ 5V/ 15A
Size: 58.4mm x 22.8mm x 9.2mm
(2.30”x0.90”x0.36”)
Industry standard pin out
18~75V extremely wide 4:1 input range
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, and TUV (EN60950-1)
Certified
CE mark meets 73/23/EEC and 93/68/EEC
directives.
OPTIONS
Positive On/Off logic
Short pin lengths available
SMD pin
APPLICATIONS
Telecom / Datacom
Wireless Networks
Optical Network Equipment
Server and Data Storage
Industrial / Testing Equipment
DATASHEET
DS_E36SR05015_01042008
TECHNICAL SPECIFICATIONS
(TA=25°C, airflow rate=300 LFM, Vin=48Vdc, nominal Vout unless otherwise noted.)
PARAMETER NOTES and CONDITIONS E36SR05015 (Standard)
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous 18 24/48 75 Vdc
Transient (100ms) 100ms 100 Vdc
Operating Temperature Refer to Figure 21 for measuring point -40 122 °C
Storage Temperature -55 125 °C
Input/Output Isolation Voltage 2250 Vdc
INPUT CHARACTERISTICS
Operating Input Voltage 18 24/48 75 Vdc
Input Under-Voltage Lockout
Turn-On Voltage Threshold 18 18.5 19 Vdc
Turn-Off Voltage Threshold 16.5 17 17.5 Vdc
Lockout Hysteresis Voltage 1 1.5 2 Vdc
Maximum Input Current 100% Load, 18Vin 5 A
No-Load Input Current No load, 48Vin 70 mA
Off Converter Input Current 10 15 mA
Inrush Current(I2t) 1 A2s
Input Reflected-Ripple Current P-P thru 12µH inductor, 5Hz to 20MHz 20 mA
Input Voltage Ripple Rejection 120 Hz 60 dB
OUTPUT CHARACTERISTICS
Output Voltage Set Point Vin=48V, Io=Io.max, Tc=25°C 4.95 5.0 5.05 Vdc
Output Voltage Regulation
Over Load Io=Io,min to Io,max ±5 ±10 mV
Over Line Vin=18V to 75V ±5 ±10 mV
Over Temperature Tc=-40°C to 85°C ±25 ±50 mV
Total Output Voltage Range over sample load, line and temperature 4.9 5.1 V
Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth
Peak-to-Peak Full Load, 1µF ceramic, 10µF tantalum 60 mV
RMS Full Load, 1µF ceramic, 10µF tantalum 10 30 mV
Operating Output Current Range 0 15 A
Output DC Current-Limit Inception Output Voltage 10% Low 110 140 %
DYNAMIC CHARACTERISTICS
Output Voltage Current Transient 48V, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs
Positive Step Change in Output Current 25% Io.max to 50% Io.max 150 mV
Negative Step Change in Output Current 50% Io.max to 25% Io.max 150 mV
Settling Time (within 1% Vout nominal) 200 us
Turn-On Transient
Start-Up Time, From On/Off Control 2 20 ms
Start-Up Time, From Input 10 20 ms
Maximum Output Capacitance Full load; 5% overshoot of Vout at startup 5000 µF
EFFICIENCY
100% Load 89 %
60% Load 90 %
ISOLATION CHARACTERISTI CS
Input to Output 2250 Vdc
Isolation Resistance 10 MΩ
Isolation Capacitance 1500 pF
FEATURE CHARACTERISTICS
Switching Frequency 300 kHz
ON/OFF Control, Negative Remote On/Off logic
Logic Low (Module On) Von/off at Ion/off=1.0mA 0 1.8 V
Logic High (Module Off) Von/off at Ion/off=0.0 µA 2.4 18 V
ON/OFF Control, Positive Remote On/Off logic
Logic Low (Module Off) Von/off at Ion/off=1.0mA 0 1.8 V
Logic High (Module On) Von/off at Ion/off=0.0 µA 2.4 18 V
ON/OFF Current (for both remote on/off logic) Ion/off at Von/off=0.0V 1 mA
Leakage Current (for both remote on/off logic) Logic High, Von/off=15V 50 uA
Output Voltage Trim Range
Output Voltage Remote Sense Range
Output Over-Voltage Protection Over full temp range; % of nominal Vout 6 V
GENERAL SPECIFICATIONS
MTBF Io=80% of Io, max; 300LFM @25℃ 2.2 M hours Weight 25 grams Over-Temperature Shutdown Refer to Figure 21 for measuring point
Min. Typ. Max. Units
Across Pins 9 & 5, Pout ≦ max rated power
Pout ≦ max rated power
-10% 10% %
10 %
127 °C
DS_E36SR05015_01042008
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.
DS_E36SR05015_01042008
3
ELECTRICAL CHARACTERISTICS CURVES
Figure 4: T u rn-on transient at full rated load current (CC mode)
(5ms/div). Vin=48V.Top Trace: Vout, 2V/div; Bottom Trace:
ON/OFF input, 5V/div.
Figure 6: T u rn-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 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 7: Turn-on transient at zero load current (5ms/div).
Vin=48V.Top Trace: Vout, 2V/div; Bottom Trace: input voltage,
20V/div.
DS_E36SR05015_01042008
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, 200us/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 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, 200us/div), Bottom Trace: I out (5A/div).
Figure 11: Input Terminal Ripple Current, ic, at 48Vin and 15A
output current with 12µH source impedance and 33µF
electrolytic capacitor (500 mA/div, 2us/div).
DS_E36SR05015_01042008
5
ELECTRICAL CHARACTERISTICS CURVES
E
StripCopper
Vo(+)
Figure 12: Input reflected ripple current, is, through a 12µH
source inductor at 48Vin and 15A output current (20 mA/div,
2us/div).
10u
Vo(-)
Figure 13: Output voltage noise and ripple measurement test
setup.
SCOPE RESISTIV
1u
LOAD
Figure 14: Output voltage ripple at 48Vin and rated load
current (Io=15A)(20 mV/div, 2us/div)
Load capacitance: 1µF ceramic capacitor and 10µF tantalum
capacitor. Bandwidth: 20 MHz.
DS_E36SR05015_01042008
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
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,
CAN/CSA-C22.2 No. 60950-00 and EN60950: 2000 and
IEC60950-1999, if the system in which the power module
is to be used must meet safety agency requirements.
Basic insulation based on 75 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 75 Vdc, for the
module’s output to meet SELV requirements, all of the
following must be met:
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.
If the metal baseplate is grounded, one Vi pin and
one Vo pin shall also be grounded.
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 (ELV) outputs
when all inputs are ELV.
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 is 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.
DS_E36SR05015_01042008
7
FEATURES DESCRIPTIONS
n
Over-Current Protection
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 and latch off. The
over-voltage latch is reset by either cycling the input
power or by toggling the on/off signal for one second.
Over-Temperature Protection
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.
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 a logic high.
Positive logic turns the modules on during a logic high
and off during a 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 to floating.
DS_E36SR05015_01042008
Vo(+)Vi(+)
Sense(+)
ON/OFF
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 and output voltage set
point adjustment (trim).
Vi(+)
Vo(+)
Sense(+)
Sense(-)
Vi(-)
Contact
Resistance
Vo(-)
Contact and Distributio
Losses
Figure 17: Effective circuit configuration for remote sense
operation
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 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.
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 does not exceed the maximum rated
power.
8
FEATURES DESCRIPTIONS (CON.)
×
×
×
Output Voltage Adjustment (TRIM)
To increase or decrease the output voltage set point,
the modules may be connected with 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.
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:
511
=− KdownRtrim 2.10
Δ
Ex. When Trim-down -10%(5V×0.9=4.5V)
511
10
()
Ω−
()
Ω=−=− KdownRtrim 9.402.10
Figure 19: Circuit configuration for trim-up (increase output
voltage)
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:
Δ+
511
=− KupRtrim 2.10
1.225
) (100 Vo11.5
−
Δ
Δ
()
Ω−
Ex. When Trim-up +10%(5V×1.1=5.5V)
=− KupRtrim 1682.10
+
101.225
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.
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.
511
) 10(100 511.5
10
()
Ω=−−
DS_E36SR05015_01042008
9
THERMAL CONSIDERATIONS
A
B
Y
E
W
E
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.
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’’).
FACING PW
PWB
MODULE
Thermal Derating
Heat can be removed by increasing airflow over the module.
The hottest point temperature of the module is +122°C. 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.
THERMAL CURVES
Figure 21: Hot spot temperature measured point.
＊ The allowed maximum hot spot temperature is defined at 122
Output Current(A)
16
14
12
10
8
6
4
E36SR05015(Standard) Output Current vs. Ambient Temperature and A ir Velocity
Natural
Convection
100LFM
@Vin = 24V (Transverse Orientation)
200LFM
300LFM
400LFM
500LFM
600LFM
℃
AIR VELOCI T
AND AMBIENT
TEMPERATUR
MEASURED BELO
THE MODUL
Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches)
IR FLO W
50.8 (2.0”)
12.7 (0.5”)
Figure 20: Wind tunnel test setup
2
0
20 25 30 35 40 45 50 55 60 65 70 75 80 85
Ambient Temperature (℃)
Figure 22: Output current vs. ambient temperature and air velocity @
V
=24V(Transverse Orientation)
in
Output Current(A)
16
14
12
10
8
6
4
2
0
20 25 30 35 40 45 50 55 60 65 70 75 80 85
E36SR05015(Standard) Output Current vs. Ambient Temperature and A ir Velocity
Natural
Convection
100LFM
@Vin = 48V (Transverse Orientation)
200LFM
300LFM
400LFM
500LFM
600LFM
Ambient Temperature (℃)
Figure 23: Output current vs. ambient temperature and air velocity @
Vin=48V(Transverse Orientation)
DS_E36SR05015_01042008
10
PICK AND PLACE LOCATION SURFACE-MOUNT TAPE & REEL
RECOMMENDED PAD LAYOUT (SMD)
DS_E36SR05015_01042008
11
LEADED (Sn/Pb) PROCESS RECOMMEND TEMP. PROFILE
℃
Peak temp.
210~230°C 5sec.
Cooling down rate <3°C /sec.
Over 200°C
40~50sec.
300 60 0 120 180 240
Temperature (°C )
250
150
100
50
Ramp-up temp.
0.5~3.0°C /sec.
2nd Ramp-up temp.
Pre-heat temp.
140~180°C 60~120 sec.
Time ( sec. )
1.0~3.0°C /sec.
Note: The temperature refers to the pin of E36SR, measured on the pin +Vout joint.
LEAD FREE (SAC) PROCESS RECOMMEND TEMP. PROFILE
217℃
℃
200
.
Peak Temp. 240 ~ 245
Ramp down
max. 4℃/sec.
Temp
150
℃
Ramp up
max. 3℃/sec.
Preheat time
100~140 sec.
Time Limited 90 sec.
above 217
℃
25℃
Time
Note: The temperature refers to the pin of E36SR, measured on the pin +Vout joint.
DS_E36SR05015_01042008
12
MECHANICAL DRAWING
Surface-mount module Through-hole module
Pin No. Name Function
1
2
3
4
5
6
7
8
+Vin
ON/OFF
-Vin
-Vout
-SENSE
TRIM
+SENSE
+Vout
Positive input voltage
Remote ON/OFF
Negative input voltage
Negative output voltage
Negative remote sense
Output voltage trim
Positive remote sense
Positive output voltage
DS_E36SR05015_01042008
13
MECHANICAL DRAWING (WITH HEATSPREADER)
THROUGH-HOLE MODULE
DS_E36SR05015_01042008
14
PART NUMBERING SYSTEM
E 36 S R 050 15 N R F A
Type of
Product
E- Eighth
Brick
Input
Voltage
36-18~75V S- Single R- Regular 050- 5.0V 15-15A N- Negative R- 0.170”
Number of
Outputs
Product
Series
Output
Voltage
Output
Current
ON/OFF
Logic
Pin
Length/Type
Option Code
F- RoHS 6/6
(Lead Free)
A- Standard Functions
H- With Heatspreader
MODEL LIST
MODEL NAME INPUT OUTPUT EFF @ 100% LOAD
E36SR3R320NRFA 18V~75V 4.5A 3.3V 20A 88%
E36SR05015NRFA 18V~75V 5A 5.0V 15A 89%
Default remote on/off logic is negative and pin length is 0.170”
For different remote on/off logic and pin length, please refer to part numbering system above or contact your local sales
.
office
CONTACT: www.delta.com.tw/dcdc
USA:
Telephone:
East Coast: (888) 335 8201
West Coast: (888) 335 8208
Fax: (978) 656 3964
Email:
DCDC@delta-corp.com
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_E36SR05015_01042008
Europe:
Telephone: +41 31 998 53 11
Fax: +41 31 998 53 53
Email:
DCDC@delta-es.tw
.
Asia & the rest of world:
Telephone: +886 3 4526107 x 6220
Fax: +886 3 4513485
Email:
DCDC@delta.com.tw
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