E48SC3R315NRA [DELTA]
Delphi Series E48SC, Eighth Brick Family DC/DC Power Modules: 48V in, 3.3V/20A out; 德尔福系列E48SC ,第八届砖系列DC / DC模块电源: 48V IN, 3.3V / 20A出型号: | E48SC3R315NRA |
厂家: | DELTA ELECTRONICS, INC. |
描述: | Delphi Series E48SC, Eighth Brick Family DC/DC Power Modules: 48V in, 3.3V/20A out |
文件: | 总15页 (文件大小:539K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
FEATURES
High efficiency: 91% @ 3.3V/20A
Size: 58.4mmx22.8mmx9.0mm
(2.30”x0.90”x0.35”)
Standard footprint
Industry standard pin out
Fixed frequency operation
Input UVLO, Output OCP, OVP, OTP
2250V isolation
Basic insulation
No minimum load required
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
Delphi Series E48SC, Eighth Brick Family
DC/DC Power Modules: 48V in, 3.3V/20A out
OPTIONS
Positive on/off logic
The Delphi Series E48SC, Eighth Brick, 48V 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 85 watts, improved and very
cost effective power solution of either 3.3V or 5V 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 requirements with basic insulation.
SMT or through-hole version
APPLICATIONS
Telecom / Datacom
Wireless Networks
Optical Network Equipment
Server and Data Storage
Industrial / Testing Equipment
DATASHEET
DS_E48SC3R320_05182011
TECHNICAL SPECIFICATIONS
(TA=25°C, airflow rate=300 LFM, Vin=48Vdc, nominal Vout unless otherwise noted.)
PARAMETER
NOTES and CONDITIONS
E48SC3R320 (Standard)
Min.
Typ.
Max.
Units
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous
75
100
110
Vdc
Vdc
°C
Transient
100ms
Operating Temperature
Refer to Figure 21 for measuring point
-40
-55
Storage Temperature
125
2250
°C
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
Vdc
36
75
Vdc
33
31
1
34
32
2
35
33
3
Vdc
Vdc
Vdc
A
100% Load, 36Vin
2.3
60
4
mA
mA
A2s
mA
dB
Off Converter Input Current
Inrush Current(I2t)
1
Input Reflected-Ripple Current
Input Voltage Ripple Rejection
OUTPUT CHARACTERISTICS
Output Voltage Set Point
Output Voltage Regulation
Over Load
P-P thru 12µH inductor, 5Hz to 20MHz
120 Hz
20
60
Vin=48V, Io=Io.max, Tc=25°C
3.267
3.234
3.300
3.333
Vdc
Io=Io,min to Io,max
Vin= 36V to 75V
±3
±3
±10
±10
mV
mV
mV
V
Over Line
Over Temperature
Tc= -40°C to 85°C
±15
Total Output Voltage Range
Output Voltage Ripple and Noise
Peak-to-Peak
Over sample load, line and temperature
5Hz to 20MHz bandwidth
3.366
Full Load, 1µF ceramic, 10µF tantalum
Full Load, 1µF ceramic, 10µF tantalum
30
15
75
30
mV
mV
A
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
0
20
Output Voltage 10% Low
110
140
%
48V, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs
50% Io.max to 75% Io.max
80
80
mV
mV
µs
75% Io.max to 50% Io.max
200
Start-Up Time, From On/Off Control
Start-Up Time, From Input
Maximum Output Capacitance
EFFICIENCY
20
20
ms
ms
µF
Full load; Maximum 5% overshoot of Vout at startup
20000
2250
100% Load
91
%
%
60% Load
91.5
ISOLATION CHARACTERISTICS
Input to Output
Vdc
MΩ
pF
Isolation Resistance
10
Isolation Capacitance
1000
325
FEATURE CHARACTERISTICS
Switching Frequency
kHz
ON/OFF Control, Negative Remote On/Off logic
Logic Low (Module On)
Von/off at Ion/off=1.0mA
Von/off at Ion/off=0.0 µA
0
0.7
18
V
V
Logic High (Module Off)
ON/OFF Control, Positive Remote On/Off logic
Logic Low (Module Off)
2.4
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
Pout ≦ max rated power
Pout ≦ max rated power
Over full temperature range
0
0.7
18
V
V
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
2.4
1
mA
µA
%
50
-20%
10%
Output Voltage Remote Sense Range
Output Over-Voltage Protection
GENERAL SPECIFICATIONS
MTBF
10
%
V
4.5
Io=80% of Io, max; 300LFM @25C
Refer to Figure 21 for measuring point
4.87
19.6
115
M hours
grams
°C
Weight
Over-Temperature Shutdown
DS_E48SC3R320_05182011
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.
3.0
2.7
2.4
2.1
1.8
1.5
1.2
0.9
0.6
0.3
0.0
30
35
40
45
50
55
60
65
70
75
INPUT V OLTA GE (V )
Figure 3: Typical full load input characteristics at room
temperature
DS_E48SC3R320_05182011
3
ELECTRICAL CHARACTERISTICS CURVES
For Negative Remote On/Off Logic
Figure 4: Turn-on transient at full rated load current (CC Mode
load ) (10 ms/div). Vin=48V.Top Trace: Vout, 2V/div; Bottom
Trace: ON/OFF input, 5V/div
Figure 5: Turn-on transient at zero load current (10 ms/div).
Vin=48V.Top Trace: Vout, 2V/div; Bottom Trace: ON/OFF input,
5V/div
For Positive Remote On/Off Logic
Figure 6: Turn-on transient at full rated load current (CC Mode
load) (10 ms/div). Vin=48V.Top Trace: Vout, 2V/div; Bottom
Trace: ON/OFF input, 5V/div
Figure 7: Turn-on transient at zero load current (10 ms/div).
Vin=48V.Top Trace: Vout, 2V/div, Bottom Trace: ON/OFF input,
5V/div
DS_E48SC3R320_05182011
4
ELECTRICAL CHARACTERISTICS CURVES
Figure 8: Output voltage response to step-change in load
current (75%-50%-75% 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).
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:
330µF, 35mΩ ESR solid electrolytic capacitor and 1µF ceramic
capacitor. Top Trace: Vout (100mV/div, 200us/div), Bottom
Trace: I out (5A/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. Measure current as shown above
DS_E48SC3R320_05182011
5
ELECTRICAL CHARACTERISTICS CURVES
Figure 11: Input Terminal Ripple Current, ic, at full rated output
current and nominal input voltage with 12µH source impedance
and 33µF electrolytic capacitor (500 mA/div, 2us/div)
Figure 12: Input reflected ripple current, is, through a 12µH
source inductor at nominal input voltage and rated load current
(50 mA/div, 2us/div)
Copper Strip
Vo(+)
SCOPE
RESISTIVE
LOAD
10u
1u
Vo(-)
Figure 13: Output voltage noise and ripple measurement test
setup
DS_E48SC3R320_05182011
6
ELECTRICAL CHARACTERISTICS CURVES
4
3
2
1
0
0
3
6
9
12
15
18
21
24
27
LOAD CURRENT(A)
Figure 14: Output voltage ripple at nominal input voltage and
rated load current (Io=20A)(20 mV/div, 2us/div)
Figure 15: Output voltage vs. load current showing typical
current limit curves and converter shutdown points
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_E48SC3R320_05182011
7
DESIGN CONSIDERATIONS
The input source must be insulated from the ac
mains by reinforced or double insulation.
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.
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.
Layout and EMC Considerations
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.
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.
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
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.
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.
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.
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:
DS_E48SC3R320_05182011
8
FEATURES DESCRIPTIONS
Vi(+)
Vo(+)
Over-Current Protection
Sense(+)
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).
ON/OFF
Sense(-)
Vi(-)
Vo(-)
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.
Figure 16: Remote on/off implementation
Remote Sense
Over-Voltage Protection
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:
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 over
voltage condition still exists, the module will shut down
again. This restart trial will continue until the over
voltage condition is corrected.
[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).
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 restart if the
temperature is within specification.
Vi(+) Vo(+)
Sense(+)
Remote On/Off
Sense(-)
Vi(-) Vo(-)
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.
Contact
Resistance
Contact and Distribution
Losses
Figure 17: Effective circuit configuration for remote sense
operation
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.
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.
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.
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.
DS_E48SC3R320_05182011
9
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 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:
Figure 18: Circuit configuration for trim-down (decrease
output voltage)
5.11Vo (100 + ∆ ) 511
Rtrim − up =
−
− 10 .2
(
KΩ
)
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:
1.225 ∆
∆
Ex. When Trim-up +10%(3.3V×1.1=3.63V)
5.11× 3.3× (100 +10 ) 511
Rtrim − up =
−
−10.2 = 90.1
(
KΩ
)
1.225 ×10
10
511
Rtrim − down =
−10.2(KΩ)
∆
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.
Ex. When Trim-down -20%(3.3V×0.8=2.64V)
511
Rtrim − down =
−10.2 = 15.4 KΩ
( )
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.
20
Care should be taken to ensure that the maximum
output power of the module remains at or below the
maximum rated power.
DS_E48SC3R320_05182011
10
THERMAL CONSIDERATIONS
Thermal Derating
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.
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.
Hence, the choice of equipment to characterize the
thermal performance of the power module is a wind
tunnel.
THERMAL CURVES
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’’).
Figure 21: Hot spot temperature measured point.
*The allowed maximum hot spot temperature is defined at 110℃
E48SC3R320 (standard) Output Current vs. Ambient Temperature and Air Velocity
Output Current (A)
@Vin=48V (Transverse Orientation)
20
Natural
Convection
16
100LFM
PWB
MODULE
FACING PWB
200LFM
300LFM
12
400LFM
500LFM
8
600LFM
AIR VELOCITY
4
0
AND AMBIENT
TEMPERATURE
MEASURED BELOW
THE MODULE
25
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature
AIR FLOW
Figure 22: Output current vs. ambient temperature and air velocity
@ Vin=48V(Transverse Orientation)
Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches)
Figure 20: Wind tunnel test setup
DS_E48SC3R320_05182011
11
PICK AND PLACE LOCATION
SURFACE-MOUNT TAPE & REEL
RECOMMENDED PAD LAYOUT (SMD)
DS_E48SC3R320_05182011
12
LEADED (Sn/Pb) PROCESS RECOMMEND TEMPERATURE PROFILE
Peak temp.
2nd Ramp-up temp.
210~230°C 5sec.
1.0~3.0°C /sec.
250
Pre-heat temp.
140~180°C 60~120 sec.
200
Cooling down rate <3°C /sec.
Ramp-up temp.
0.5~3.0°C /sec.
150
100
50
Over 200°C
40~50sec.
0
60
120
Time ( sec. )
180
240
300
Note: The temperature refers to the pin of E48SC, measured on the pin +Vout joint.
LEAD FREE (SAC) PROCESS RECOMMEND TEMPERATURE PROFILE
.
Temp
Peak Temp. 240 ~ 245 ℃
217℃
200℃
Ramp down
max. 4℃/sec.
Preheat time
100~140 sec.
150℃
25℃
Time Limited 90 sec.
above 217℃
Ramp up
max. 3℃/sec.
Time
Note: The temperature refers to the pin of E48SC, measured on the pin +Vout joint.
DS_E48SC3R320_05182011
13
MECHANICAL DRAWING
Surface-mount module
Through-hole module
Pin No.
Name
Function
1
2
3
4
5
6
7
8
+Vin
Positive input voltage
ON/OFF
-Vin
Remote ON/OFF
Negative input voltage
Negative output voltage
Negative remote sense
Output voltage trim
-Vout
-SENSE
TRIM
+SENSE
+Vout
Positive remote sense
Positive output voltage
DS_E48SC3R320_05182011
14
PART NUMBERING SYSTEM
E
48
S
C
3R3
20
N
R
F
A
Type of
Product Voltage Outputs
Input Number of
Product
Series
Output
Voltage Current
Output
ON/OFF
Logic
Pin
Length/Type
Option Code
E- Eighth
Brick
48 -
S- Single
C- Improved
3R3 - 3.3V 20 -20A
N - Negative
P - Positive
R - 0.170
N - 0.145”
M - SMD pin
A- Standard
Functions
F- RoHS 6/6
(Lead Free)
Space -
36~75V
E48SR series
RoHS 5/6
MODEL LIST
MODEL NAME
INPUT
OUTPUT
EFF @ 100% LOAD
E48SC3R315NR A
E48SC3R315NN A
E48SC3R315NMFA
E48SC3R320NRFA
E48SC3R325NRFA
E48SC3R325NN A
E48SC05012NRFA
E48SC05012NN A
36V~75V
36V~75V
36V~75V
36V~75V
36V~75V
36V~75V
36V~75V
36V~75V
1.8A
1.8A
1.8A
2.3A
3.0A
3.0A
2.1A
2.1A
3.3V
15A
15A
15A
20A
25A
25A
12A
12A
91.0%
91.0%
91.0%
91.0%
91.0%
91.0%
91.5%
91.5%
3.3V
3.3V
3.3V
3.3V
3.3V
5.0V
5.0V
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:
Europe:
Asia & the rest of world:
Telephone: +886 3 4526107
Ext.6220~6224
Telephone: +41 31 998 53 11
Fax: +41 31 998 53 53
Email: DCDC@delta-es.tw
East Coast: (888) 335 8201
West Coast: (888) 335 8208
Fax: (978) 656 3964
Email: DCDC@delta-corp.com
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_E48SC3R320_05182011
15
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