Document
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 out
www.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
TECHNICAL SPECIFICATIONS
(TA=25°C, airflow rate=300 LFM, Vin=48Vdc, nominal Vout unless otherwise noted.)
PARAMETER
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
NOTES and CONDITIONS
Min.
Q48SB10828NRFA
Typ. Max. 63 +124 +125 2250 48 35 33 2 63 61 2 5 0.02 10 9.6 10.8 400 4.8 6.6 120 30 0 31 40 150 150 50 20 20 10000 95.5 96.5 2250 10 750 130 500 5 200 12.1 60 36 34 64 62 8 120 15 Units Vdc °C °C Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc A mA mA A2s mArms Vdc Vdc mV V mV V mV mV A A mV mV us ms ms µF % % Vdc MΩ pF kHz 0.8 18 1 2.88 43 127 V V mA M hours grams °C
Refer to Figure 15 for the measuring point
-40 -55 36 34 32 62 60 30
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
0 2.4
DS_Q48SB10828_11062006
2
ELECTRICAL CHARACTERISTICS CURVES
EFFICIENCY (%)
100 36Vin 98 96 94 92 48Vin 60Vin
POWER DISSIPATION (W)
24
36Vin 48Vin 60Vin
20 16 12 8
90 88 86 5 10 15 20 25 30 35
OUTPUT CURRENT (A)
4 0 5 10 15 20 25 30 35
OUTPUT CURRENT(A)
Figure 1: Efficiency vs. load current for minimum, nominal, and maximum input voltage at 25°C
14
VOUT(V)
Figure 2: Power loss vs. load current for minimum, nominal, and maximum input voltage at 25°C.
12 10 8 6 4 2 0 0 5 10 15 20 25 30 35 40 45
OUTPUT CURENT(A)
36Vin
48Vin
60Vin
Figure 3: Output voltage regulation vs load current showing typica.