D48SR4R215A

FEATURES
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D48SR4R215A, DC/DC Power Modules:
44V~65Vin, 4.2V, 15Aout
The Led D48SR4R215A, 44V~65Vin input, single output, isolated
DC/DC converters, are the latest offering from a world leader in power
systems technology and manufacturing ― Delta Electronics, Inc. This
product
provides up to 63 watts of power or 15A of output current.
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. Typical efficiency of the 4.2V/15A
module is greater than 91.7%.
DS_D48SR4R215A_10312013
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High efficiency: 91.7% @ 4.2V/15A
Size: 88x48x19mm
Fixed frequency operation
Input UVLO
OTP
Output OVP
Output OCP
500V isolation and basic insulation
TECHNICAL SPECIFICATIONS
(TA=25°C, airflow rate=300 LFM, Vin=54Vdc, nominal Vout unless otherwise noted.)
PARAMETER
NOTES and CONDITIONS
D48SR4R215A
Min.
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous
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
Inrush Current (I2t)
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
Operating Output Current Range
Output Over Current Protection(hiccup mode)
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 Input
Output Capacitance (note1)
EFFICIENCY
100% Load
100% Load
60% Load
ISOLATION CHARACTERISTICS
Input to Output
Isolation Resistance
Isolation Capacitance
FEATURE CHARACTERISTICS
Switching Frequency
Output Over-Voltage Protection
GENERAL SPECIFICATIONS
MTBF
Weight
Over-Temperature Shutdown (Hot spot)
Typ.
0
-40
-55
Io=Io, min to Io, max
Vin=44V to 65V
Tc=-40°C to 65°C
Over sample load, line and temperature
5Hz to 20MHz bandwidth
Vin=54V, Full Load, 1µF ceramic, 10µF tantalum
Vin=54V, Full Load, 1µF ceramic, 10µF tantalum
Vin=44V to 65V
Units
65
65
125
500
Vdc
Vdc
°C
°C
Vdc
44
54
65
Vdc
41.5
38.5
1.5
42.5
40
2.5
43.5
41.5
3.5
1.8
Vdc
Vdc
Vdc
A
mA
A2s
100% Load, 44Vin
Vin=54V, Io=0A
Vin=54V, Io=Io.max, Tc=25°C
Max.
50
4.1
4.2
4.3
Vdc
±15
±15
4.0
±5
±5
±120
4.2
4.4
mV
mV
mV
V
15
mV
mV
A
100
25
0
Output Voltage 10% Low
54Vin, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs
75% Io.max to 50% Io.max
50% Io.max to 75% Io.max
125
%
300
300
200
mV
mV
µs
3
Full load; 5% overshoot of Vout at startup
0
Vin=44V
Vin=54V
Vin=54V
3000
91.7
91.3
91.5
%
%
%
500
10
Vdc
MΩ
nF
300
125
KHz
%
3
40.6
M hours
grams
135
°C
130
°C
10
Over full temp range; % of nominal Vout
Io=80% of Io, max; Ta=25°C, airflow rate=300FLM
Refer to Figure 8 for Hot spot location
(54Vin,80% Io, 0LFM)
Over-Temperature Shutdown ( NTC resistor )
Note: Please attach thermocouple on NTC resistor to test OTP function, the hot spots’ temperature is just for reference.
mS
µF
Note1: For applications with higher output capacitive load, please contact Delta.
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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
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ELECTRICAL CHARACTERISTICS CURVES
0
0
0
0
Figure 4: Turn-on transient at full rated load current (resistive
load) (2ms/div). Vin=54V. Top Trace: Vout, 2.0V/div; Bottom
Trace: Vin, 30V/div
Figure 5: Turn-on transient at zero load current (2ms/div).
Vin=54V. Top Trace: Vout: 2.0V/div, Bottom Trace: Vin, 30V/div
0
0
Figure 6: Output voltage response to step-change in load
current (50%-75%-50% of Io, max; di/dt = 0.1A/µs; Vin is 54V).
Load cap: 10µF tantalum capacitor and 1µF ceramic capacitor.
Top Trace: Vout (0.2V/div, 200us/div), Bottom Trace:Iout
(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
D48SR4R215A_10312013
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FEATURES DESCRIPTIONS
THERMAL CONSIDERATIONS
Over-Current Protection
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.
The module 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 module will
automatically shut down, and enter hiccup mode.
For hiccup mode, the module will try to restart after
shutdown. If the over current condition still exists, the
module will shut down again. This restart trial will continue
until the over-current 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 enter in hiccup mode.
For hiccup mode, the module 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.
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’’).
Over-Temperature Protection
For auto-restart mode, the module will detect temperature
after shutdown. If the over temperature condition still exists,
the module will remain shutdown. This restart trial will
continue until the over-temperature condition is corrected.
PWB
FANCING PWB
MODULE
AIR VELOCITY
AND AMBIENT
TEMPERATURE
SURED BELOW
THE MODULE
50.8(2.00")
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.
AIR FLOW
Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches)
Figure 7: 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.
D48SR4R215A_10312013
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12.7mm
(0.50")
THERMAL CURVES
25.4mm
(1.00")
Figure 8: * Hot spot’s temperature measured point. The allowed
maximum hot spot’s temperature is defined at 124℃
Output Current (A)
D48SR4R215A Output Current vs. Ambient Temperature and Air Velocity
@Vin = 54V (Natural Convection)
15
12
Natural
Convection
9
6
3
0
25
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (℃)
Figure 9: Output current vs. ambient temperature and air
velocity @Vin=54V (Natural convection)
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MECHANICAL DRAWING
Note: components(except connectors) size/location etc shown on above drawings just for reference, may different from real
samples.
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MODEL LIST
MODEL NAME
D48SR4R215A
INPUT
44V~65V
OUTPUT
1.8A
4.2V
EFF @ 100% LOAD
15A
91.5% @ 54Vin
CONTACT: www.deltaww.com/dcdc
USA:
Telephone:
East Coast: 978-656-3993
West Coast: 510-668-5100
Fax: (978) 656 3964
Email: DCDC@delta-corp.com
Europe:
Phone: +31-20-655-0967
Fax: +31-20-655-0999
Email: DCDC@delta-es.com
Asia & the rest of world:
Telephone: +886 3 4526107
Ext 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.
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