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Delta Electronics
Delta Electronics


Q48SB10828NRFA

DC/DC Power Modules



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Q48SB10828NRFA pdf
FEATURES
High Efficiency: 95.5% @9.6V/31A
Standard footprint: 57.9 x 36.8 x 12.7mm
(2.28”x1.45”x0.5”)
Industry standard pin out
Fully protected:OTP, OCP, Input OVP, UVLO
2250V isolation
Basic insulation
No minimum load required
Current sharing
ISO 9001, TL 9000, ISO 14001, QS 9000,
OHSAS 18001 certified manufacturing facility
UL/cUL 60950 (US & Canada), and TUV
(EN60950) Certified
CE mark meets 73/23/EEC and +3/68/EEC
directives
Delphi Series Q48SB, 300W Bus Converter
DC/DC Power Modules: 48V in, 9.6V/31A outwww.DataSheet4U.com
The Delphi Series Q48SB, 48V input, single output, quarter brick, 300W bus
converters are 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 Delphi Series Q48SB
operates from a nominal 48V input and provides up to 300W of power or up
to 31A of output current in an industry standard quarter brick footprint. The
Q48SB product currently supports two input ranges: the Q48SB120 features
an input voltage range of 42V to 53V and provides 4:1 unregulated output of
12V at 20A or 25A. The Q48SB108 features a wider input voltage range of
36V to 60V and provides 5:1 unregulated output of 9.6V at up to 31A.
Typical efficiency for the 9.6V/31A or 10.8V/28A module is 95.5%. 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
Short pin lengths
Heatsink available for extended
operation
APPLICATIONS
Datacom / Networking
Wireless Networks
Optical Network Equipment
Server and Data Storage
Industrial/Testing Equipment
DATASHEET
DS_Q48SB10828_11062006



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Q48SB10828NRFA pdf
TECHNICAL SPECIFICATIONS
(TA=25°C, airflow rate=300 LFM, Vin=48Vdc, nominal Vout unless otherwise noted.)
PARAMETER
NOTES and CONDITIONS
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
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
Isolation Resistance
Isolation Capacitance
FEATURE CHARACTERISTICS
Switching Frequency
ON/OFF Control, (Logic Low-Module ON)
Logic Low
Logic High
ON/OFF Current
GENERAL SPECIFICATIONS
MTBF
Weight
Over-Temperature Shutdown
Refer to Figure 15 for the measuring point
RMS thru 12µH inductor, 5Hz to 20MHz
Vin=48V, Io=no load, Ta=25°C
Vin=54V, Io=no load, Ta=25°C
Io=Io,min to Io,max
Vin=36V to 60V
Ta=-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
48V, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs
50% Io.max to 75% Io.max
75% Io.max to 50% Io.max
Von/off at Ion/off=1.0mA
Von/off at Ion/off=0.0 µA
Ion/off at Von/off=0.0V
Io=80% of Io, max; Ta=25°C
Refer to Figure 15 for the measuring point
Q48SB10828NRFA
Min.
Typ.
Max.
Units
63 Vdc
-40
+124
°C
-55
+125
°C
2250
Vdc
36 48 60 Vdc
34 35 36 Vdc
32 33 34 Vdc
2 Vdc
62 63 64 Vdc
60 61 62 Vdc
2 Vdc
8A
30 120 mA
5 15 mA
0.02
A2s
10 mArms
9.6
10.8
Vdc
Vdc
400 500
mV
4.8 5
V
200 mV
6.6
12.1
V
120 mV
30 mV
0 31 A
40 A
150 mV
150 mV
50 us
20
20
10000
ms
ms
µF
95.5
96.5
%
%
2250
10
750
Vdc
M
pF
130 kHz
0 0.8 V
2.4 18 V
1 mA
2.88
43
127
M hours
grams
°C
DS_Q48SB10828_11062006
2



Part Number Q48SB10828NRFA
Description DC/DC Power Modules
Maker Delta Electronics - Delta Electronics
Total Page 11 Pages
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