DELTA Q48SB9R650PNFH

FEATURES
High Efficiency: 96.8% @9.6V/50A
Standard footprint: 58.4 x 36.8 x12.3mm
(2.30”x1.45”x0.48’’)
Industry standard pinout
Input OVP, UVLO; output OCP and OTP
1500V isolation
Basic insulation
Monotonic startup into normal load and
pre-bias loads
No minimum load required
Constant 500W output power
Parallelable for higher power output
ISO 9001, TL 9000, ISO 14001, QS9000,
OHSAS18001 certified manufacturing
facility
UL/cUL 60950 (US & Canada), and TUV
(EN60950) pending
CE mark Pending
Delphi Series Q48SB, 500W Bus Converter
DC/DC Power Modules: 48V in, 9.6V/55A out
The Delphi Series Q48SB, 48V input, single output, quarter brick, 500W
bus converter is the latest offering from a world leader in power systems
technology and manufacturing -- Delta Electronics, Inc. This product
family supports intermediate bus architectures and powers multiple
downstream non-isolated point-of-load (POL) converters. The
Q48SB9R6 (5:1) operates from a nominal 48V input and provides up to
500W of power or up to 63A (@ 38Vin) of output current in an industry
standard quarter brick footprint. The Q48SB 5:1 bus converter operates
with 500W constant output power, hence when input voltage drops, the
output current will increase accordingly. Typical efficiency for the
9.6V/50A output is 96.8%. With optimized component placement,
creative design topology, and numerous patented technologies, the
Q48SB bus converter delivers outstanding electrical and thermal
performance. An optional heatsink is available for harsh thermal
requirements.
OPTIONS
Positive On/Off logic
Heatspreader available for
extended operation
Latch mode output OCP and OTP
APPLICATIONS
Datacom / Networking
Wireless Networks
Optical Network Equipment
Server and Data Storage
Industrial/Testing Equipment
DATASHEET
DS_Q48SB9R650_07102006
TECHNICAL SPECIFICATIONS
(TA=25°C, airflow rate=300 LFM, Vin=48Vdc, nominal Vout unless otherwise noted.)
PARAMETER
NOTES and CONDITIONS
Q48SB9R650NRFA
Min.
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous
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
Lockout Hysteresis Voltage
Maximum Input Current
No-Load Input Current
Off Converter Input Current
Inrush Current(I2t)
Input Reflected-Ripple Current
Internal input filter component value
Recommend external input capacitor for system stability
Capacitance
ESR
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 Power Range
38V<Vin≤42V
42V<Vin≤55V
Output DC Powert-Limit Inception
38V≤Vin≤55V
Current share accuracy (2 units in parallel)
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
Single module operation
Single module operation
2 pcs Parallel module operation
2 pcs Parallel module operation
EFFICIENCY
55A
50A
33A
ISOLATION CHARACTERISTICS
Input to Output
Isolation Resistance
Isolation Capacitance
FEATURE CHARACTERISTICS
Switching Frequency
ON/OFF Control for single module operation
Negative Remote On/Off logic
Logic Low (Module On)
Logic High (Module Off)
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)
GENERAL SPECIFICATIONS
MTBF
Weight (open frame)
Over-Temperature Shutdown
Refer to Fig.17 for the measuring point
100% Load, 38V Vin
Typ.
-40
-55
Max.
Units
57
124
125
1500
Vdc
°C
°C
Vdc
36
48
57
Vdc
32.5
30.5
34
32
2
35.5
33.5
Vdc
Vdc
Vdc
59
57
60.5
58.5
2
62
60
Vdc
Vdc
Vdc
A
mA
mA
A2s
mA
uH/uF
80
With 100uF external input capacitor
P-P thru 12µH inductor, 5Hz to 20MHz
L/C
12
20
0.47/4.4
100
0.2
uF
ohm
Vin=48V, Io=no load, Ta=25°C
9.6
Vdc
Io=Io,min to Io,max
Vin=38V to 55V
Tc=-40°C to 100°C
over sample load, line and temperature
5Hz to 20MHz bandwidth
Full Load, 1µF ceramic, 10µF tantalum
Full Load, 1µF ceramic, 10µF tantalum
400
600
3.8
400
11.5
mV
V
mV
V
80
25
120
50
mV
mV
480
500
W
W
130%
10
W
%
300
300
200
mV
mV
us
35
35
ms
ms
10000
5000
10000
8000
µF
µF
µF
µF
100KHz -40oC to 100oC
47
0.1
13.5
200
15
1
40
6.8
0
0
output voltage 10% lower
120%
% of rated output current
48V, 10µF Tan & 1µF Ceramic load cap, 1A/µs
50% Io.max to 75% Io.max
75% Io.max to 50% Io.max
Start up with 20A Load
Start up with 55A Load
Start up with 20A Load
Start up with 110A Load
95.4
95.8
95.8
10
Ion/off at Von/off=0.0V
Logic High, Von/off=15V
Io=80% of Io, max; Ta=25°C; 300LFM airflow
Refer to Fig.17 for the measuring point
96.4
96.8
96.8
%
%
%
1500
1000
Vdc
MΩ
pF
130
kHz
-0.7
2
0.8
18
V
V
-0.7
2
0.8
18
0.3
50
V
V
mA
uA
0.25
TBD
54
129
M hours
grams
°C
DS_Q48SB9R650_07102006
2
ELECTRICAL CHARACTERISTICS CURVES
25.00
98.00
48V
94.00
Loss(W)
Efficiency(%)
38V
20.00
96.00
48V
38V
55V
92.00
90.00
55V
15.00
10.00
5.00
88.00
0.00
86.00
0
10
20
30
40
50
60
0
70
Output Current(A)
10
20
30
40
50
60
70
Output Current(A)
Figure 1: Efficiency vs. load current for minimum, nominal, and
maximum input voltage at 25°C
Figure 2: Power loss vs. load current for minimum, nominal,
and maximum input voltage at 25°C.
12.00
Output Voltage(V)
10.00
8.00
6.00
48V
4.00
38V
2.00
55V
0.00
0
20
40
60
80
Output Current(A)
Figure 3: 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.
DS_Q48SB9R650_07102006
3
ELECTRICAL CHARACTERISTICS CURVES
For Negative Remote On/Off Logic
Figure 4: Turn-on transient at full rated load current
(5 ms/div). Top Trace: Vout; 5V/div; Bottom Trace: ON/OFF
input: 2V/div
Figure 5: Turn-on transient at zero load current (5 ms/div). Top
Trace: Vout: 5V/div; Bottom Trace: ON/OFF input: 2V/div
For Positive Remote On/Off Logic
Figure 6: Turn-on transient at full rated load current
(5 ms/div). Top Trace: Vout; 5V/div; Bottom Trace: ON/OFF
input: 2V/div
Figure 7: Turn-on transient at zero load current (5 ms/div). Top
Trace: Vout: 5V/div; Bottom Trace: ON/OFF input: 2V/div
DS_Q48SB9R650_07102006
4
ELECTRICAL CHARACTERISTICS CURVES
Figure 8: Output voltage response to step-change in load
current (50%-75%-50% of Io, max; di/dt = 0.1A/µs). Load cap:
10µF, tantalum capacitor and 1µF ceramic capacitor. Top Trace:
Vout (200mV/div, 200us/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 (50%-75%-50% of Io,max; di/dt=1A/µs). Load cap:
10uF, tantalum capacitor and 1µF ceramic capacitor. Top Trace:
Vout (200mV/div, 200us/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
Vin+
+
+
Vin-
Cs: 220uF
100uF,
ESR=0.2 ohm @
25oC 100KHz
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 47µF electrolytic capacitor (1A/div, 2us/div).
DS_Q48SB9R650_07102006
5
ELECTRICAL CHARACTERISTICS CURVES
Copper Strip
Vo(+)
10u
1u
SCOPE
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, 2us/div).
Figure 13: Output voltage noise and ripple measurement test
setup.
Figure 14: Output voltage ripple at nominal input voltage and
rated load current (50 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_Q48SB9R650_07102006
6
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 typical
100uF electrolytic capacitor (ESR > 0.1 Ω at 100 kHz, -40oC to
100oC.) 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:
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 50A 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.
DS_Q48SB9R650_07102006
7
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 latch mode or hiccup
mode, which is optional.
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.
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.
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 latch mode or
auto-restart mode, which is optional.
Remote On/Off
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.
Vi(+)
Vo(+)
R
ON/OFF
Vi(-)
Load
Vo(-)
Figure 15: Remote on/off implementation
For auto-restart mode, the module will monitor the
module temperature after shutdown. Once the
temperature is within the specification, the module will be
auto-restart,
For latch mode, the module will latch off once it
shutdown. Either cycling the input power or toggling the
on/off signal for one second can reset the latch.
DS_Q48SB9R650_07102006
8
THERMAL CONSIDERATIONS
THERMAL CURVES
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.
Figure 17: Hot spot temperature measured point
*The allowed maximum hot spot temperature is defined at 124℃
Output Current(A)
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’’).
Q48SB9R650(Standard) Output Current vs. Ambient Temperature and Air Velocity
@Vin = 48V (Transverse Orientation, From Pin 4 to Pin 7, Preliminary Derating Curve)
50
400LFM
45
40
35
Natural
Convection
30
100LFM
200LFM
25
PWB
FACING PWB
20
300LFM
15
MODULE
10
5
0
20
25
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (℃)
Figure 18: Output current vs. ambient temperature and air
[email protected] Vin=48V(Transverse orientation, from pin 4 to pin 7,
preliminary derating curve, without heatspreader)
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)
TBD
Figure 16: Wind tunnel test setup
Thermal Derating
Heat can be removed by increasing airflow over the
module. The module’s maximum hot spot temperature is
124℃. 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.
Figure 19: Output current vs. ambient temperature and air
[email protected] Vin=48V(Transverse Orientation, with heat spreader)
DS_Q48SB9R650_07102006
9
MECHANICAL DRAWING (WITHOUT HEATSPREADER)
Pin No.
Name
Function
1
2
3
4
5
6
7
-Vin
ON/OFF
+Vin
-Vout
+Vout
-Vout
+Vout
Negative input voltage
Remote ON/OFF
Positive input voltage
Negative output voltage (optional)
Positive output voltage
Negative output voltage
Positive output voltage (optional)
Pin Specification:
Pins 1-3 1.0mm (0.040”) diameter
Pins 4-7 1.5mm (0.060”) diameter
All pins are copper with Tin plating
DS_Q48SB9R650_07102006
10
MECHANICAL DRAWING (WITH HEAT SPREADER)
DS_Q48SB9R650_07102006
11
PART NUMBERING SYSTEM
Q
48
S
Type of
Product
Input Number of
Voltage Outputs
Q- Quarter
48- 48V
S- Single
Brick
B
9R6
50
N
R
Product
Series
Output
Voltage
Output
Current
ON/OFF
Logic
Pin Length
B- Bus
9R6 - 9.6V
Converter
50 - 55A @ N- Negative
48Vin
P- Positive
F
Option Code
R- 0.170”
F- RoHS 6/6
N- 0.145”
(Lead Free)
K- 0.110”
A
A- 4 output pin, no
heat spreader
C- 2 output pin, no
heat spreader
H- 4 output pin, with
heat spreader
MODEL LIST
MODEL NAME
INPUT
OUTPUT
Eff. @ 48Vin, 480W Po
Q48SB9R650NRFA
36V~57V
14A
9.6V
55A
96.8%
Q48SB12040NRFA
36V~57V
14A
12V
40A
96.8%
Default remote on/off logic is negative and pin length is 0.170”
Hiccup output OCP and auto-restart OTP are default;
For different remote on/off logic, pin length and output OCP and OTP mode, 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:
Telephone: +41 31 998 53 11
Fax: +41 31 998 53 53
Email: [email protected]
Asia & the rest of world:
Telephone: +886 3 4526107 x6220
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_Q48SB9R650_07102006
12