DELTA Q48SL05020NRFA

FEATURES
High efficiency:
85% @ 1.5V/ 35A
Size: 57.9mmx36.8mmx12.7mm
(2.28”x1.45”x0.50”)
Standard footprint
Industry standard pin out
Fixed frequency operation
Metal baseplate
Input UVLO, Output OCP, OVP, OTP
Basic insulation
No minimum load required
2:1 Input voltage range
ISO 9001, TL 9000, ISO 14001, QS9000,
OHSAS18001 certified manufacturing
facility
UL/cUL 60950 (US & Canada)
Recognized, and TUV (EN60950)
Certified
CE mark meets 73/23/EEC and
93/68/EEC directives
Delphi Series Q48SL, 100W Quarter Brick Family
DC/DC Power Modules: 48V in, 1.5V/35A out
OPTIONS
The Delphi Series Q48SL Quarter Brick, 48V input, single output, isolated
DC/DC converter is the latest offering from a world leader in power system
and technology and manufacturing -- Delta Electronics, Inc. This product
family provides up to 100 watts of power or 35A of output current (2.5V and
below) in an industry standard footprint. 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.
Positive On/Off logic
Short pin lengths available
APPLICATIONS
Telecom/Datacom
Wireless Networks
Optical Network Equipment
Server and Data Storage
Industrial/Testing Equipment
DATASHEET
DS_Q48SL1R535_01192007
TECHNICAL SPECIFICATIONS
(TA=25°C, airflow rate=300 LFM, Vin=48Vdc, nominal Vout unless otherwise noted.)
PARAMETER
NOTES and CONDITIONS
Q48SL1R535 (Standard)
Min.
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous
Transient (100ms)
Operating 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
Input Over-Voltage Lockout
Turn-Off Voltage Threshold
Turn-On Voltage Threshold
Maximum Input Current
No-Load Input Current
Off Converter Input Current
Inrush Current(I2t)
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
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
Input to Case
Output to Case
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
DS_Q48SL1R535_01192007
100ms
Refer to Fig.21 for measuring point
1 minute
Typ.
-40
-55
1500
Max.
Units
80
100
100
125
Vdc
Vdc
°C
°C
Vdc
36
48
75
Vdc
33
31
1
34
32
2
35
33
3
Vdc
Vdc
Vdc
81
79
100% Load, 36Vin
100
3
0.015
10
55
P-P thru 12µH inductor, 5Hz to 20MHz
120 Hz
Vin=48V, Io=Io.max, Tc=25℃
Io=Io,min to Io,max
Vin=36V to 75V
Tc=-40℃ to 100℃
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
1.47
1.50
1.53
Vdc
±2
±2
±15
±5
±5
±50
1.57
mV
mV
mV
V
70
20
110
40
35
150
mV
mV
A
%
1.43
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
2.1
150
10
150
150
300
5
5
Full load; 5% overshoot of Vout at startup
mV
mV
us
10
10
10000
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
Across Pins 9 & 5, Pout ≦ max rated power
Pout ≦ max rated power
Over full temp range; % of nominal Vout
Io=80% of Io, max; Tc=40°C
Refer to Fig.21 for measuring point
ms
ms
µF
85
86.5
%
%
1200
Vdc
Vdc
Vdc
MΩ
pF
230
kHz
1500
1500
500
10
Von/off at Ion/off=1.0mA
Von/off at Ion/off=0.0 µA
Vdc
Vdc
A
mA
mA
A2s
mA
dB
0
2.4
0.8
15
V
V
0
2.4
0.4
15
1
50
+10
+10
130
V
V
mA
uA
%
%
%
-20
115
122
2.5
55
110
M hours
grams
°C
2
14.0
90
36Vin
48Vin
POWER DISSIPATION (W)
EFFICIENCY (%)
ELECTRICAL CHARACTERISTICS CURVES
75Vin
85
80
36Vin
48Vin
75Vin
12.0
10.0
8.0
75
6.0
70
4.0
65
2.0
60
0.0
5
10
15
20
25
30
35
OUTPUT CURRENT (A)
INPUT CURRENT (A)
Figure 1: Efficiency vs. load current for minimum, nominal, and
maximum input voltage at 25°C.
5
10
15
20
25
30
35
OUTPUT CURRENT(A)
Figure 2: Power dissipation vs. load current for minimum,
nominal, and maximum input voltage at 25°C.
2.0
Io=35A
1.8
Io=21A
Io=3.5A
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
30
35
40
45
50
55
60
65
70
75
INPUT VOLTAGE (V)
Figure 3: Typical input characteristics at room temperature
DS_Q48SL1R535_01192007
3
ELECTRICAL CHARACTERISTICS CURVES
For Negative Remote On/Off Logic
Figure 4: Turn-on transient at full rated load current (resistive
load) (2 ms/div). Top Trace: Vout; 500mV/div; Bottom Trace:
ON/OFF input: 2V/div
Figure 5: Turn-on transient at zero load current (2 ms/div). Top
Trace: Vout: 500mV/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) (2 ms/div). Top Trace: Vout; 500mV/div; Bottom Trace:
ON/OFF input: 2V/div
DS_Q48SL1R535_01192007
Figure 7: Turn-on transient at zero load current (2 ms/div). Top
Trace: Vout: 500mV/div; Bottom Trace: ON/OFF input: 2V/div
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), Bottom Trace: Iout (10A/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 9: Output voltage response to step-change in load
current (75%-50%-75% of Io, max; di/dt = 2.5A/µs). Load cap:
470µF, 35mΩ ESR solid electrolytic capacitor and 1µF ceramic
capacitor. Top Trace: Vout (100mV/div), Bottom Trace: Iout
(10A/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
Vi(+)
Cs:220uF
ESR< 0.1Ω
﹫
20℃100KHz
33uF
ESR< 0.5Ω
﹫
20℃100KHz
Vi(-)
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_Q48SL1R535_01192007
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 (200 mA/div).
Figure 12: Input reflected ripple current, is, through a 12µH
source inductor at nominal input voltage and rated load current
(10 mA/div).
Copper Strip
Vo(+)
10u
1u
SCOPE
RESISTIVE
LOAD
Vo(-)
Figure 13: Output voltage noise and ripple measurement test
setup
DS_Q48SL1R535_01192007
6
ELECTRICAL CHARACTERISTICS CURVES
OUTPUT VOLTAGE (V)
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
Vin=48V
0.0
0
5
10
15
20
25
30
35
40
45
50
LOAD CURRENT (A)
Figure 14: Output voltage ripple at nominal input voltage and
rated load current (50 mV/div). Load capacitance: 1µF ceramic
capacitor and 10µF tantalum capacitor. Bandwidth: 20 MHz.
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_Q48SL1R535_01192007
Figure 15: Output voltage vs. load current showing typical
current limit curves and converter shutdown points.
7
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:
DS_Q48SL1R535_01192007
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 20A 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.
8
FEATURES DESCRIPTIONS
Over-Current Protection
Vi(+)
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.
Sense(+)
ON/OFF
Sense(-)
Vi(-)
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.
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(+)
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
Vo(+)
Sense(+)
Sense(-)
Contact
Resistance
Vi(-)
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
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.
DS_Q48SL1R535_01192007
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)
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:
⎛ 5 . 11
⎞
Rtrim − down = ⎜
− 10 . 22 ⎟ (k Ω )
⎠
⎝ ∆%
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:
⎞
⎛ 5.11Vout (1 + ∆ % ) 5.11
Rtrim − up = ⎜
−
− 10.22 ⎟(kΩ )
Vref∆ %
∆%
⎝
⎠
Where Vref =1.225V
Ex. When Trim-up +10%(1.5V×1.1=1.65V)
⎞
⎛ 5.11×1.5(1+ 0.1) 5.11
Rtrim− up = ⎜
−
−10.22⎟⎟ = 7.508(kΩ)
0.1
⎝ 1.225× 0.1
⎠
Ex. When Trim-down -20%(1.5V×0.8=1.20V)
⎞
⎛ 5.11
− 10.22 ⎟ = 15.33(kΩ )
Rtrim − down = ⎜
⎝ 0.2
⎠
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.
DS_Q48SL1R535_01192007
10
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 Derating
Heat can be removed by increasing airflow over the
module. The module’s maximum case temperature is
+100°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
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
Figure 21: Hot spot temperature measured point
*The allowed maximum hot spot temperature is defined at 100℃
MODULE
40
Q48SL1R535(Standard) Output Current vs. Ambient Temperature and Air Velocity
@ Vin = 48V (Transverse Orientation, no heat sink)
Output Current(A)
35
AIR VELOCITY
AND AMBIENT
TEMPERATURE
MEASURED BELOW
THE MODULE
Natural
Convection
30
100LFM
25
50.8 (2.0”)
200LFM
20
AIR FLOW
300LFM
15
400LFM
10
500LFM
12.7 (0.5”)
5
600LFM
Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches)
0
Figure 20: Wind tunnel test setup
DS_Q48SL1R535_01192007
20
25
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (℃)
Figure 22: Q48SL1R535NR (Standard) Output current vs.
ambient temperature and air [email protected]=48V (Transverse
orientation, no heat sink).
11
MECHANICAL DRAWING
Pin No.
1
2
3
4
5
6
7
8
9
Name
Function
-Vin
Negative input voltage
ON/OFF
+Vin
+Vout
+SENSE
TRIM
-SENSE
-Vout
Remote ON/OFF
Positive input voltage
Positive output voltage
Positive remote sense
Output voltage trim
Negative remote sense
Negative output voltage
Pin Specification:
Pins 1-4, 6-8
Pins 5 & 9
1.00mm (0.040”) diameter
1.50mm (0.059”) diameter
All pins are copper with Tin plating.
DS_Q48SL1R535_01192007
12
PART NUMBERING SYSTEM
Q
48
S
L
1R5
35
N
R
Type of
Product
Input
Voltage
Number of
Outputs
Product
Series
Output
Voltage
Output
Current
ON/OFF
Logic
Pin Length
Q- Quarter
Brick
48V
S- Single
L – IMS,
Positive trim
1R5-1.5V
35-35A
N-Negative
P-Positive
R-0.170”
N-0.145”
K-0.110”
F
A
Option Code
F- RoHS 6/6 A-Standard Functions
(Lead Free)
MODEL LIST
Part Number
INPUT
OUTPUT
EFF @ 100% LOAD
Q48SL1R535NRFA
36V~75V
2.1A
1.5V
35A
85%
Q48SL1R835NRFA
36V~75V
2.5A
1.8V
35A
87%
Q48SL2R535NRFA
36V~75V
3.3A
2.5V
35A
89%
Q48SL3R330NRFA
36V~75V
3.7A
3.3V
30A
91%
Q48SL05020NRFA
36V~75V
3.7A
5.0V
20A
90%
Q48SL12010NRFA
36V~75V
4.4A
12V
10A
91%
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
CONTACT: www.delta.com.tw/dcdc
USA:
Telephone:
East Coast: (888) 335 8201
West Coast: (888) 335 8208
Fax: (978) 656 3964
Email: [email protected]
Europe:
Phone: +41 31 998 53 11
Fax: +41 31 998 53 53
Email: [email protected]
Asia & the rest of world:
Telephone: +886 3 4526107 ext 6220
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
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_Q48SL1R535_01192007
13