V48SR05013

FEATURES

High efficiency: 91.0% @ 5.0V/13A

Size: 33.0 x 22.9 x 9.5 mm

Industry standard footprint and pinout

Fixed frequency operation

Input UVLO and OVP

OTP and output OCP, OVP

Output voltage trim: -20%, +10%

Monotonic startup into normal and
(1.3” x 0.90” x 0.37”)
pre-biased loads

2250V isolation and basic insulation

No minimum load required

SMD and through-hole versions

No negative current during power or enable
on/off

ISO 9001, TL 9000, ISO 14001, QS 9000,
OHSAS 18001 certified manufacturing facility
UL/cUL 60950-1 2nd ed, with Amendment

1 :2009 (US & Canada) recognized
Delphi Series V48SR, 1/16th Brick 65W
th
The Delphi Series V48SR, 1/16 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 66 watts of power or 25A of output
OPTIONS

SMD pins

Positive remote On/Off

OTP and output OVP, OCP mode
(Auto-restart or latch)
th
current (1.8V and below) in an industry standard 1/16 brick form factor
(1.30” x 0.90”). The 5.0V output offers one of the highest output currents
available and provides up to 91.0% efficiency 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 modules are protected from abnormal input/output voltage,
APPLICATIONS
current, and temperature conditions. For lower power needs with the

Optical Transport
5.0V output, but in a similar small form factor, please check out Delta

Data Networking
S48SP (36W or 5V/7A) and S48SE (17W or 5V/3A) series standard

Communications
DC/DC modules.

Servers
DATASHEET
DS_V48SR05013_05222013
TECHNICAL SPECIFICATIONS
(TA=25°C, airflow rate=300 LFM, Vin=48Vdc, nominal Vout unless otherwise noted.)
PARAMETER
NOTES and CONDITIONS
V48SR05013 (Standard)
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
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)
Leakage Current (for both remote on/off logic)
Output Voltage Trim Range
Output Voltage Remote Sense Range
Output Over-Voltage Protection
GENERAL SPECIFICATIONS
MTBF
Weight
Over-Temperature Shutdown (Hot Spot)
Typ.
100ms
-40
-55
36
32
30
1
34
32
2
100% Load, 36Vin
Max.
Units
80
100
85
125
2250
Vdc
Vdc
°C
°C
Vdc
75
Vdc
35
33
3
2.1
Vdc
Vdc
Vdc
A
mA
mA
2
As
mA
dB
50
8
1
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=36V to 75V
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
Output Voltage 10% Low
20
60
4.950
5.000
5.050
Vdc
±3
±3
±50
±10
±10
5.15
mV
mV
mV
V
100
30
13
140
mV
mV
A
%
4.85
60
15
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
125
125
200
mV
mV
us
30
30
10000
Full load; 5% overshoot of Vout at startup
91.0
91.5
%
%
2250
1100
Vdc
MΩ
pF
415
kHz
10
Von/off
Von/off
Von/off
Von/off
Ion/off at Von/off=0.0V
Logic High, Von/off=15V
Pout ≦ max rated power
Pout ≦ max rated power
Over full temp range; % of nominal Vout
2
2
-20
120
Io=80% of Io, max; Ta=25°C, airflow rate=300FLM
Refer to Figure 21 for Hot spot location
(48Vin,80%Io, 200LFM,Airflow from Vin+ to Vo+)
Over-Temperature Shutdown (NTC Resistor)
ms
ms
µF
0.7
18
V
V
0.7
18
1
50
10
10
140
V
V
mA
uA
%
%
%
2.59
16
M hours
grams
130
°C
128
°C
Note: Please attach thermocouple on NTC resistor to test OTP function, the hot spot’s temperature is just for reference.
DS_V48SR05013_05222013
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_V48SR05013_05222013
3
ELECTRICAL CHARACTERISTICS CURVES
For Negative Remote On/Off Logic
Figure 4: Turn-on transient at full rated load current (resistive
load) (5 ms/div). Vin=48V. Top Trace: Vout, 2.0V/div; Bottom
Trace: ON/OFF input,2V/div
Figure 5: Turn-on transient at zero load current (5 ms/div).
Vin=48V. Top Trace: Vout: 2.0V/div, Bottom Trace: ON/OFF
input, 2V/div
For Positive Remote On/Off Logic
Figure 6: Turn-on transient at full rated load current (resistive
load) (5 ms/div). Vin=48V. Top Trace: Vout, 2.0V/div; Bottom
Trace: ON/OFF input, 2V/div
Figure 7: Turn-on transient at zero load current (5 ms/div).
Vin=48V. Top Trace: Vout, 2.0V/div; Bottom Trace: ON/OFF
input, 2V/div
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: 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
DS_V48SR05013_05222013
4
ELECTRICAL CHARACTERISTICS CURVES
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 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 (200 mA/div, 1us/div
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
(20 mA/div, 1us/div)
Figure 13: Output voltage noise and ripple measurement test
setup
6.0
OUTPUT VOLTAGE (V)
5.0
4.0
3.0
2.0
1.0
Vin=48V
0.0
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
LOAD CURRENT (A)
Figure 14: Output voltage ripple at nominal input voltage and
rated load current (Io=13A)(50 mV/div, 1us/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_V48SR05013_05222013
Figure 15: Output voltage vs. load current showing typical
current limit curves and converter shutdown points
5
Safety Considerations
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. Below is the reference design for an
input filter tested with V48SR05013XXXX to meet class A
in CISSPR 22.
Schematic and Components List
CX1=CX2=4*0.47uF/100V, ceramic cap.
CY1=CY2=CY3=CY4=22nF/1000V, ceramic cap.
CX3=100uF/100V, Aluminium Electrolytic cap.
Common Inductor is PULSE P0527, 0.53mH.
Test Result: Vin=48V, full load.
Yellow line is peak mode; Blue line is average mode.
SDC
ADP
06.Jun
Team
07
10:29
Att
dBµV
1
80
55022AQP
10
dB
RBW
9
MT
100
PREAMP
OFF
PK
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.
kHz
ms
MHz
10
MHz
70
1
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.
SGL
55022AAV
CLRWR
The power module has extra-low voltage (ELV) outputs
when all inputs are ELV.
60
TDF
50
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 5A 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.
40
30
20
10
0
150
kHz
30
Date: 6.JUN.2007
SDC
ADP
06.Jun
10:29:39
Team
07
10:29
Att
dBµV
80
55022AQP
MHz
1
10
dB
RBW
9
MT
100
PREAMP
OFF
MHz
kHz
Soldering and Cleaning Considerations
ms
10
MHz
70
SGL
55022AAV
2
AV
60
CLRWR
TDF
50
40
30
20
10
0
150
kHz
Date: 6.JUN.2007
30
MHz
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.
10:29:14
DS_V48SR05013_05222013
6
FEATURES DESCRIPTIONS
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, and enter hiccup mode or latch
mode, which is optional.
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.
Vi(+)
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.
Vo(+)
Sense(+)
ON/OFF
Sense(-)
For latch mode, the module will latch off once it
shutdown. The latch is reset by either cycling the input
power or by toggling the on/off signal for one second.
Vi(-)
Vo(-)
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 or latch mode, which is optional.
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.
For latch mode, the module will latch off once it
shutdown. The latch is reset by either cycling the input
power or by toggling the on/off signal for one second.
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).
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 hiccup mode or latch
mode, which is optional.
For hiccup mode, the module will try to restart after
shutdown. If the over temperature condition still exists,
the module will shut down again. This restart trial will
continue until the over-temperature condition is
corrected.
For latch mode, the module will latch off once it
shutdown. The latch is reset by either cycling the input
power or by toggling the on/off signal for one second.
Vi(+)
Vo(+)
Sense(+)
Sense(-)
Vi(-)
Contact
Resistance
Vo(-)
Contact and Distribution
Losses
Figure 17: Effective circuit configuration for remote sense
operation
If the remote sense feature is not used to regulate the
Remote On/Off
output at the point of load, please connect SENSE(+) to
Vo(+) and SENSE(–) to Vo(–) at the module.
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.
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.
DS_V48SR05013_05222013
7
FEATURES DESCRIPTIONS (CON.)
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.
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.
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:
Rtrim  up 
5.11Vo (100   ) 511

 10.2K
1.225

Figure 18: Circuit configuration for trim-down (decrease
output voltage)
Ex. When Trim-up +10% (5V×1.1=5.5V)
5.11 5  (100  10) 511
Rtrim  up 

 10.2  168K 
1.225  10
10
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:
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.
 511

Rtrim  down  
 10.2 K 


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.
Ex. When Trim-down -10% (5V×0.9=4.5V)
 511

Rtrim  down  
 10.2 K   40.9K 
10


DS_V48SR05013_05222013
Care should be taken to ensure that the maximum
output power of the module remains at or below the
maximum rated power.
8
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: Temperature measurement location
* The allowed maximum hot spot temperature is defined at 124 ℃.
V48SR05013(standard) Output Current vs. Ambient Temperature and Air Velocity
@Vin = 48V (Either Orientation)
Output Current (A)
PWB
FACING PWB
MODULE
Natural
Convection
12
100LFM
200LFM
8
300LFM
400LFM
AIR VELOCITY
AND AMBIENT
TEMPERATURE
MEASURED BELOW
THE MODULE
4
50.8 (2.0”)
AIR FLOW
0
65
12.7 (0.5”)
70
75
80
85
Ambient Temperature (℃)
Figure 22: Output current vs. ambient temperature and air velocity
@Vin=48V (Either Orientation)
Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches)
Figure 20: Wind tunnel test setup
DS_V48SR05013_05222013
9
PICK AND PLACE LOCATION
RECOMMENDED PAD LAYOUT (SMD)
SURFACE-MOUNT TAPE & REEL
DS_V48SR05013_05222013
10
LEADED (Sn/Pb) PROCESS RECOMMEND TEMP. PROFILE(FOR SMD MODELS)
Note: The temperature refers to the pin of V48SR, measured on the pin +Vout joint.
LEAD FREE (SAC) PROCESS RECOMMEND TEMP. PROFILE(FOR SMD
MODELS)
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 V48SR, measured on the pin +Vout joint.
DS_V48SR05013_05222013
11
MECHANICAL DRAWING
Surface-mount module
Pin No.
1
2
3
4
5
6
7
8
Name
+Vin
ON/OFF
-Vin
-Vout
-SENSE
TRIM
+SENSE
+Vout
Through-hole module
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_V48SR05013_05222013
12
RECOMMENDED PAD LAYOUT (THROUGH-HOLE MODULE)
DS_V48SR05013_05222013
13
ART NUMBERING SYSTEM
V
48
S
Type of
Input Number of
Product Voltage Outputs
V - 1/16
brick
48V
S - Single
R
050
13
N
R
F
Product
Series
Output
Voltage
Output
Current
ON/OFF
Logic
Pin
Length/Type
Regular
050 - 5V
13 - 13A
N- Negative
P- Positive
R - 0.170”
N - 0.145”
K - 0.110”
M - SMD
A
Option Code
F- RoHS 6/6 A - Standard Functions
(Lead Free) B - Latching OTP
MODEL LIST
MODEL NAME
V48SR1R225NRFA
V48SR1R525NRFA
V48SR1R825NRFA
V48SR2R520NRFA
V48SR3R320NRFA
V48SR05013NRFA
V48SR12005NRFA
V48SR15004NRFA
INPUT
36V~75V
36V~75V
36V~75V
36V~75V
36V~75V
36V~75V
36V~75V
36V~75V
OUTPUT
1.2A
1.4A
1.6A
1.8A
2.4A
2.3A
2.3A
2.3A
1.2V
1.5V
1.8V
2.5V
3.3V
5.0V
12V
15V
EFF @ 100% LOAD
25A
25A
25A
20A
20A
13A
5.5A
4.4A
84.0%
85.0%
87.0%
89.0%
90.5%
91.0%
91.0%
91.0%
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.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
Ext. 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
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