Delta Electronics Delphi Q48DC Datasheet
Delta Electronics Delphi Q48DC Datasheet

Delta Electronics Delphi Q48DC Datasheet

Delphi series q48dc, 65w quarter brick dual output dc/dc power modules: 48v in, +-12.1v, 2.7a output

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Delphi Series Q48DC, 65W Quarter Brick Dual Output
DC/DC Power Modules: 48V in, ±12.1V, 2.7A Output
The Delphi Series Q48DC second generation Quarter Brick, 48V
input, positive and negative bipolar dual output, and isolated DC/DC
converters are the latest offering from a world leader in power system
and technology and manufacturing ― Delta Electronics, Inc. The
Q48DC product family is the second generation in the bipolar dual
output series and it provides even more cost effective solution of
positive and negative bipolar output (output voltage is 12.1V) and up
to 65 watts of power in an industry standard quarter brick package
size. Both output channels can be used independently. 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 models are fully protected from abnormal input/output
voltage, current, and temperature conditions. The Delphi Series
converters meet all safety requirements with basic insulation.
PRELIMINARY DATASHEET
DS_ Q48DC12003_03112008
FEATURES
High efficiency: 88%@ ±12.1V/2.7A
Size: 57.9mm x 36.8mm x 9.7mm
(2.28"×1.45"×0.38")
Industry standard pin out
Fixed frequency operation
Input UVLO, Output OCP, OVP, OTP
2250V isolation
No minimum load required
Adjustable output voltage
ISO 9001, TL 9000, ISO 14001, QS9000,
OHSAS18001 certified manufacturing
facility
UL/cUL 60950-1 (US & Canada), and TUV
(EN60950-1) - pending
OPTIONS
Positive On/Off logic
Output OVP hiccup available
APPLICATIONS
Telecom / DataCom
Wireless Networks
Optical Network Equipment
Server and Data Storage
Industrial / Test Equipment

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Summary of Contents for Delta Electronics Delphi Q48DC

  • Page 1 ― Delta Electronics, Inc. The Q48DC product family is the second generation in the bipolar dual output series and it provides even more cost effective solution of positive and negative bipolar output (output voltage is 12.1V) and up...
  • Page 2: Technical Specifications

    TECHNICAL SPECIFICATIONS =25°C, airflow rate=300 LFM, V =48Vdc, nominal Vout unless otherwise noted.) PARAMETER ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous Transient 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 Maximum Input Current No-Load Input Current...
  • Page 3 ELECTRICAL CHARACTERISTICS CURVES 75Vin 48Vin 36Vin OUTPUT CURRENT(A) Figure 1: Efficiency vs. load current for minimum, nominal, and maximum input voltage at 25 C. Io1=Io2. ° INPUT VOLTAGE (V) Figure 3: Typical input characteristics at room temperature (Io=full load). DS_Q48DC12003_03112008 10.2 Figure 2: Power dissipation vs.
  • Page 4 ELECTRICAL CHARACTERISTICS CURVES Figure 4: Turn-on transient at zero load current (10ms/div). Vin=48V. Top Trace: Vout: 5V/div; Bottom Trace: ON/OFF input: 5V/div. Figure 6: Turn-on transient at zero load current (10ms/div). Vin=48V. Top Trace: Vout: 5V/div; Bottom Trace: Vin input: 50V/div.
  • Page 5 ELECTRICAL CHARACTERISTICS CURVES ELECTRICAL CHARACTERISTICS CURVES 75Vin 48Vin 36Vin OUTPUT CURRENT(A) Figure 1: Efficiency vs. load current for minimum, nominal, and Figure 8: Output voltage response to step-change in load maximum input voltage at 25 C. Io1=Io2. current Iout1 (75%-50%-75% of Io, max; di/dt = 0.1A/µs, °...
  • Page 6 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 (L ) of 12 μH. Capacitor Cs offset TEST possible battery impedance.
  • Page 7 ELECTRICAL CHARACTERISTICS CURVES Copper Strip Vo(+) Vo(-) Figure 13: Output voltage noise and ripple measurement test setup. LOAD CURRENT(A) Figure 15: Output voltage vs. load current showing typical current limit curves and converter shutdown points. DS_Q48DC12003_03112008 SCOPE RESISTIV LOAD Figure 14: Output voltage ripple at nominal input voltage (Vin=48V) and rated load current (Io1=Io2=2.7A,20 mV/div).
  • Page 8: Design 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 <...
  • Page 9: Features Descriptions

    FEATURES DESCRIPTIONS Over-Current Protection Vi(+) Vo(+) The modules include an internal output over-current protection circuit, which will endure current limiting for Trim an unlimited duration during output overload. If the ON/OFF output current exceeds the OCP set point, the modules will automatically shut down (hiccup mode).
  • Page 10 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 Vo(+) or Vo(-). The TRIM pin should be left open if this feature is not used.
  • Page 11: Thermal Considerations

    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.
  • Page 12: Mechanical Drawing

    MECHANICAL DRAWING Pin No. Name Function +Vin Positive input voltage ON/OFF Remote ON/OFF -Vin Negative input voltage -Vout Negative output voltage Ground Trim Output voltage trim +Vout Positive output voltage DS_Q48DC12003_03112008...
  • Page 13: Part Numbering System

    PART NUMBERING SYSTEM Product Input Number of Product Type Voltage Outputs Series Q - Quarter D - Dual C - 2nd Brick Output generation of bipolar dual output MODEL LIST MODEL NAME Q48DC12003NR A 36V~75V CONTACT www.delta.com.tw/dcdc USA: Telephone: East Coast: (888) 335 8201 West Coast: (888) 335 8208 Fax: (978) 656 3964 Email:...

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