DELTA E48SP12020NNFB

`
FEATURES
Š
High efficiency: 94.5% @12V/20A
Š
Size:
58.4mm x 22.8mm x 10.9mm
(2.30”x0.90”x0.43”) W/O Heat spreader
58.4mm x 22.8mm x 12.7mm
(2.30”x0.90”x0.5”) With Heat spreader
Š
Industry standard pin out
Š
Fixed frequency operation
Š
Input UVLO, Output OCP & OVP, OTP
Š
Monotonic startup into normal and
Pre-biased loads
Š
2250V Isolation and basic insulation
Š
No minimum load required
No negative current during power on or
Š
power off;
ISO 9001, TL 9000, ISO 14001, QS 9000,
Š
OHSAS 18001 certified manufacturing
facility
UL/cUL 60950-1 (US & Canada)
Š
Recognized,
Delphi Series E48SP Eighth Brick Family
DC/DC Power Modules: 48V in, 12V/20A out
The Delphi Series E48SP, 36~60V input, Eighth Brick, single output,
isolated DC/DC converters are the latest offering from a world leader in
power systems technology and manufacturing ― Delta Electronics,
Inc. The E48SP product provides up to 240 watts of power in an
industry standard footprint and pinout. The E48SP converter
operates from an input voltage of 36V to 60V. Efficiency is 94.5% for
the 12V output at 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.
DATASHEET
DS_E48SP12020NRFB_05232011
OPTIONS
Š
Positive On/Off logic
Š
Short pin lengths available
APPLICATIONS
Š
Telecom/DataCom
Š
Wireless Networks
Š
Optical Network Equipment
Š
Server and Data Storage
Š
Industrial/Test Equipment
TECHNICAL SPECIFICATIONS
(TA=25°C, airflow rate=300 LFM, Vin=48Vdc, nominal Vout unless otherwise noted.)
PARAMETER
NOTES and CONDITIONS
E48SP12020NRFB
Min.
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous
Operating Case Temperature (Without heat spreader)
Operating Case Temperature (With heat spreader)
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)
Start up Current
Input Terminal Ripple Current
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
Setting 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)
ON/OFF Current (for both remote on/off logic)
Leakage Current (for both remote on/off logic)
Output Over-Voltage Protection
GENERAL SPECIFICATIONS
MTBF
Weight
Weight
Over-Temperature Shutdown ( Without heat spreader)
Over-Temperature Shutdown
(With heat spreader)
DS_E48SP12020NRFB_05232011
Refer to figure 18 for measuring point
Refer to figure 20 for measuring point
Max.
Units
-40
-40
-55
65
122
110
125
2250
Vdc
°C
°C
°C
Vdc
36
60
Vdc
35.5
33.5
3
7.8
150
12
1
12
0.24
Vdc
Vdc
Vdc
A
mA
mA
2
As
A
A
mA
dB
12.02
Vdc
+20
+15
mV
mV
12.2
mV
V
100
40
200
80
20
150
mV
mV
A
%
200
200
400
400
200
mV
mV
µs
30
30
40
40
5000
ms
ms
µF
32.5
30.5
1
Vin=36V, 100% Load,
With 100uF external input capacitor
Peak, Vin=36V, 100% Load, With 5000uF Co
RMS, Vin=48V, With 100uF input cap.
P-P thru 12µH inductor, 5Hz to 20MHz
120 Hz
Vin=48V, Io=Io.max, Tc=25°C
Typ.
34
32
2
7
70
8
7
0.16
6
60
11.67
11.85
Io=Io,min to Io,max
Vin=36V to 60V
Tc=-40°C to 125°C
over sample load, and temperature
5Hz to 20MHz bandwidth
Full Load, 1µF ceramic, 10µF tantalum
Full Load, 1µF ceramic, 10µF tantalum
Full input voltage range
Output Voltage 10% Low
11.5
±120
11.85
0
110
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; no overshoot of Vout at startup
Vin=48V
Vin=48V
93.5
94
94.5
95
%
%
2250
1500
Vdc
MΩ
pF
245
kHz
10
Von/off
Von/off
Von/off
Von/off
Ion/off at Von/off=0.0V
Ion/off at Von/off=2.4V
Logic High, Von/off=15V
Over full temp range; % of nominal Vout
Io=100% of Io, max; 300LFM; Ta=25°C
Open frame
With heat spreader
Refer to figure 18 for measuring point
Refer to figure 20 for measuring point
-0.7
2.4
0.8
50
V
V
-0.7
2.4
0.8
50
1
V
V
mA
µA
µA
V
10
50
18
14.6
1.19
29.1
39.2
132
120
M hours
grams
grams
°C
°C
2
ELECTRICAL CHARACTERISTICS CURVES
96
16
95
14
94
12
Power Loss(W)
Efficiency(%)
93
92
91
36V
90
48V
89
10
60V
88
8
36V
6
48V
4
60V
2
87
86
0
2
4
6
8
10
12
14
16
18
20
0
2
4
6
8
Output Current(A)
10
12
14
16
18
20
Output Current(A)
Figure 1: Efficiency vs. load current for minimum, nominal, and maximum Figure 2: Power dissipation vs. load current for minimum, nominal,
input voltage at 25°C
and maximum input voltage at 25°C
15
8
7
12
Output Voltage(V)
Input current(A)
6
5
4
9
6
3
3
2
1
0
0
0
30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60
5
10
15
20
25
30
Output Current(A)
Input voltage(V)
Figure 3: Typical full load input characteristics at room temperature
DS_E48SP12020NRFB_05232011
Figure 4: Output voltage regulation vs load current showing typical
current limit curves and converter shutdown points for minimum,
nominal, and maximum input voltage at room temperature
3
ELECTRICAL CHARACTERISTICS CURVES
For Negative Remote On/Off Logic
Figure 5: Turn-on transient at zero load current (10ms/div).
Vin=48V. Top Trace: Vout, 5V/div; Bottom Trace: ON/OFF input,
5V/div
Figure 6: Turn-on transient at full rated load current (constant
current load) (10 ms/div). Vin=48V. Top Trace: Vout, 5V/div;
Bottom Trace: ON/OFF input, 5V/div
For Input Voltage Start up
Figure 7: Turn-on transient at zero load current (10 ms/div).
Vin=48V. Top Trace: Vout, 5V/div, Bottom Trace: input voltage,
30V/div
DS_E48SP12020NRFB_05232011
Figure 8: Turn-on transient at full rated load current (constant
current load) (10 ms/div). Vin=48V. Top Trace: Vout, 5V/div;
Bottom Trace: input voltage, 30V/div
4
ELECTRICAL CHARACTERISTICS CURVES
Figure 9: Output voltage response to step-change in load
current (75%-50% of Io, max; di/dt = 0.1A/µs, Vin=48V). Load
cap: 10µF, tantalum capacitor and 1µF ceramic capacitor. Top
Trace: Vout (80mV/div, 200us/div); Bottom Trace: Io (10A/div,
200us/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..
is
Figure 10: Output voltage response to step-change in load
current (50%-75% of Io, max; di/dt = 0.1A/µs, Vin=48V). Load
cap: 10µF, tantalum capacitor and 1µF ceramic capacitor. Top
Trace: Vout (80mV/div, 200us/div); Bottom Trace: Io (10A/div,
200us/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..
ic
Vin+
+
+
Vin-
Cs: 220uF
100uF,
ESR=0.2 ohm @
25oC 100KHz
Figure 11: 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. Measure current as shown below
DS_E48SP12020NRFB_05232011
Figure 12: Input Terminal Ripple Current, ic, at full rated output
current and nominal input voltage with 12µH source impedance
and 100µF electrolytic capacitor (200 mA/div, 2us/div).
5
ELECTRICAL CHARACTERISTICS CURVES
Copper Strip
Vo(+)
10u
1u
SCOPE
RESISTIVE
LOAD
Vo(-)
Figure 13: Input reflected ripple current, is, through a 12µH
source inductor at nominal input voltage and rated load current
(20 mA/div, 2us/div).
Figure 14: Output voltage noise and ripple measurement test
setup
Figure 15: Output voltage ripple at nominal input voltage and
rated load current (Io=20A)(20 mV/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_E48SP12020NRFB_05232011
6
DESIGN CONSIDERATIONS
Safety 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 33 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. Below is the reference design for an
input filter tested with E48SP12020XXXX to meet class B
in CISSPR 22.
Schematic and Components List
Vin(+) Vo(+)
CY1
Vin
CX
Cin
E48SP12020
LOAD
L1
-
CY2
Vin(-)
Vo(-)
CY
Cin is 100uF*2 low ESR Aluminum cap;
CX is 2.2uF ceramic cap;
CY1 are 10nF ceramic caps;
CY2 are 10nF ceramic caps;
CY is 1nF ceramic cap;
L1 is common-mode inductor, L1=0.53mH;
Test Result: Vin=48V, Io=20A,
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,
CAN/CSA-C22.2, No. 60950-1 and EN60950-1+A11 and
IEC60950-1, 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:
Š
The input source must be insulated from the ac
mains by reinforced or double insulation.
Š
The input terminals of the module are not operator
accessible.
Š
If the metal baseplate / heatspreader is grounded
the output must be also grounded.
Š
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
Fast-acting fuse with 30A 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
Yellow line is quasi peak mode; Blue line is average mode.
DS_E48SP12020NRFB_05232011
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.
7
FEATURES DESCRIPTIONS
Over-Current Protection
Remote 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, and enter hiccup mode.
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.
For hiccup mode, the module 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.
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.
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 enter in hiccup
mode.
For hiccup mode, the module will try to restart after
shutdown. If the output overvoltage condition still exists,
the module will shut down again. This restart trial will
continue until the over-voltage condition is corrected.
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.
Vi(+)
Vo(+)
R
ON/OFF
Vi(-)
Load
Vo(-)
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, and enter in auto-restart
mode.
Figure 16: Remote on/off implementation
For auto-restart mode, the module will monitor the
module temperature after shutdown. Once the
temperature is dropped and within the specification, the
module will be auto-restart.
DS_E48SP12020NRFB_05232011
8
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.
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’’).
PWB
FACING PWB
MODULE
AIR VELOCITY
AND AMBIENT
TEMPERATURE
MEASURED BELOW
THE MODULE
50.8 (2.0”)
AIR FLOW
12.7 (0.5”)
Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches)
Figure 17: 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_E48SP12020NRFB_05232011
9
THERMAL CURVES
(WITHOUT HEAT SPREADER)
THERMAL CURVES
(WITH HEAT SPREADER)
Figure 18: Temperature measurement location
* The allowed maximum hot spot temperature is defined at 122℃
Figure 20: Temperature measurement location
* The allowed maximum hot spot temperature is defined at 110℃
Output Current (A)
E48SP12020(Standard) Output Current vs. Ambient Temperature and Air Velocity
@Vin = 48V (Transverse Orientation)
Output Current (A)
E48SP12020(Standard) Output Current vs. Ambient Temperature and Air Velocity
@Vin = 48V (Transverse Orientation,With Heatspreader)
20
20
18
18
Natural
Convection
16
14
Natural
Convection
16
100LFM
14
100LFM
12
200LFM
12
200LFM
10
300LFM
10
300LFM
8
400LFM
8
400LFM
6
500LFM
6
500LFM
4
600LFM
4
600LFM
2
2
0
25
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (℃)
Figure 19: Output current vs. ambient temperature and air
velocity @Vin=48V(Transverse Orientation, without heat
spreader)
DS_E48SP12020NRFB_05232011
0
25
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (℃)
Figure 21: Output current vs. ambient temperature and air velocity
@Vin=48V(Transverse Orientation, with heat spreader)
10
PICK AND PLACE LOCATION
RECOMMENDED PAD LAYOUT (SMD)
SURFACE-MOUNT TAPE & REEL
DS_E48SP12020NRFB_05232011
11
LEADED (Sn/Pb) PROCESS RECOMMEND TEMPERATURE PROFILE
Temperature (°C )
250
200
150
Ramp-up temp.
0.5~3.0°C /sec.
2nd Ramp-up temp. Peak temp.
1.0~3.0°C /sec. 210~230°C 5sec.
Pre-heat temp.
140~180°C 60~120 sec.
Cooling down rate <3°C /sec.
100
Over 200°C
40~50sec.
50
0
60
120
Time ( sec. )
180
240
300
Note: The temperature refers to the pin of E48SP, measured on the pin +Vout joint.
LEAD FREE (SAC) PROCESS RECOMMEND TEMPERATURE PROFILE
Temp.
Peak Temp. 240 ~ 245 ℃
217℃
Ramp down
max. 4℃/sec.
200℃
150℃
Preheat time
100~140 sec.
Time Limited 90 sec.
above 217℃
Ramp up
max. 3℃/sec.
25℃
Time
Note: The temperature refers to the pin of E48SP, measured on the pin +Vout joint.
DS_E48SP12020NRFB_05232011
12
MECHANICAL DRAWING (WITHOUT HEATSPREADER)
SURFACE-MOUNT MODULE
DS_E48SP12020NRFB_05232011
THROUGH-HOLE MODULE
13
MECHANICAL DRAWING (WITH HEATSPREADER)
*For modules with through-hole pins and the optional heatspreader, they are intended for wave soldering assembly
onto system boards, please do not subject such modules through reflow temperature profile.
THROUGH-HOLE MODULE
Pin No.
1
2
3
4
5
Name
+Vin
ON/OFF
-Vin
-Vout
+Vout
DS_E48SP12020NRFB_05232011
Function
Positive input voltage
Remote ON/OFF
Negative input voltage
Negative output voltage
Positive output voltage
14
PART NUMBERING SYSTEM
E
48
S
P
120
20
N
R
Type of
Product
Input
Voltage
Number of
Outputs
Product
Series
Output
Voltage
Output
Current
ON/OFF
Logic
Pin
Length/Type
E- Eighth
Brick
48-36V~60V
S- Single
P - High
Power
120 - 12V
20 -20A
N- Negative
R- 0.170”
N- 0.145”
M- SMD
F
B
Option Code
F- RoHS 6/6 B – 36~60V Vin
(Lead Free)
MODEL LIST
MODEL NAME
E48SP12020NRFB
INPUT
36V~60V
OUTPUT
9A
12V
EFF @ 100% LOAD
20A
94.5%
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: 978-656-3993
West Coast: 510-668-5100
Fax: (978) 656 3964
Email: DCDC@delta-corp.com
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 6220~6224
Fax: +886 3 4513485
Email: DCDC@delta.com.tw
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_E48SP12020NRFB_05232011
15