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Delta Electronics Series Q48DR manual

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Table of contents for the manual

  • Page 1

    DATASHEET DS_Q48DR1R833_0316 2007 Delphi Series Q48DR, 87W-100W, Quarter Brick Dual Output, DC/DC Power Modules: 48V in, 1.8V and 3.3V, 15A out each channel The Delphi Series Q48DR Quarter Brick Dual, 48V input, dual o utput, isolated DC/DC converters are latest offering from one of the wo rld’s largest power supply manufactu rers — Delta Elect[...]

  • Page 2

    DS_Q48DR1R833_0316 2007 TECHNICAL SPECIFICATIONS (T A =25°C, airflow rate=300 LFM, V in =48Vdc, nomi nal Vout unless o therwise noted.) PARAMETER NOTES and CONDITIONS Q48DR1R833NRFA Min. Ty p. Max. Units ABSOLUTE MAXIMUM RA TINGS Input Voltage Continuous 80 Vdc Transient (100ms) <100ms 100 Vdc Operating Temperature Please refer to figure 27 for[...]

  • Page 3

    ELECTRICAL CHARACT ERISTICS CURVES Figure 1: Efficiency vs. load current Iout1 for minimum, nominal, and maxi mum input voltage at 2 5 ° C, for Iout2=7.5A. Figure 2: Efficiency vs. load current Iout2 for minimum, nominal, and maxi mum input voltage at 2 5 ° C, for Iout1=7.5A Figure 3: Efficiency vs. load current Iout1 and Iout2 for minimum, nomi [...]

  • Page 4

    DS_Q48DR1R833_0316 2007 4 ELECTRICAL CHARACT ERISTICS CURVES Figure 5: Turn-on transient at zero load current(2ms/div). Vin=48V. Negative logic turn on. Top Trace: Vout; 1V/div; Bottom Trace: ON/OFF input: 5V/div Figure 6: Turn-on transient at full ra ted load current (resistive load) (2 ms/div). Vin=48V. Negative logic turn on. Top T r ace: Vout; [...]

  • Page 5

    DS_Q48DR1R833_0316 2007 5 ELECTRICAL CHARACTERISTICS CURVES F te igure 9: Typical full load input characteristics at room mperature I F cu o ca C m th mm (2 inches to 3 inches) from the modul e. igure 10: Output voltage response to step-change in load rrent Iout2 (75%-50%-75% of Io, max; di/dt = 0.1A/ µs) at ut1=7.5A. Load cap: 10 µF, tantalum ca[...]

  • Page 6

    DS_Q48DR1R833_0316 2007 6 ELECTRICAL CHARACT ERISTICS CURVES Figure 13: Input Terminal Ripple Current-i c , at full rated output current and nominal input voltage w ith 12µH source impedance and 33 µF electrolytic capacitor (500 mA/d iv, 2us/div). Figure 14: Input reflected ripple current-i s , through a 12µH source inductor at nominal input vol[...]

  • Page 7

    DS_Q48DR1R833_0316 2007 7 ELECTRICAL CHARACT ERISTICS CURVES Figure 17: Output voltage vs. load current Iout1 showing typical current limit curves and converter shutdow n poi nts. Figure 18: Output voltage vs. load curr ent Iout2 showing typical current limit curves and converter shutdow n points.[...]

  • Page 8

    DS_Q48DR1R833_0316 2007 8 Do not ground one of the input pins without gro unding one of the output pins. This conne ction may allow a non-SELV voltage to appear between the output pin and ground. The power module h as extra-low voltage (ELV) outputs when all inputs are ELV. This power module is not internally fused. To a chieve optimum safety and s[...]

  • Page 9

    DS_Q48DR1R833_0316 2007 9 Figure 19: Remote on/off implementation Output Voltage Adjustment (TRIM) To increase or decrea se the output voltage set poi nt, the modules may be connected wit h an external resistor between the TRIM pin and eit her Vout1(+) or RTN. The TRIM pin should be left open if this feature is not used. Figure 20: Circuit configur[...]

  • Page 10

    DS_Q48DR1R833_0316 2007 10 FEATURES DESCRIPTIONS (CON.) Figure 21: Circuit configuration for trim-up (increase output voltage) If the external resistor is connected bet ween the TRIM and RTN, the output voltage set point increases (Fig. 21). The external resistor value is from table below. The output voltage can be increased by the trim pin, When u[...]

  • Page 11

    DS_Q48DR1R833_0316 2007 Note: Wind T unnel Test Setup Figure Dim nsions are in mi llimeters and (Inc he 11 THERMAL CONSIDERATIONS Thermal management is an important part of the system design. To ensure proper, rel iable operation, sufficient cooling of the p ower module is need ed over the entire temperature range of the module. Convection cooling [...]

  • Page 12

    DS_Q48DR1R833_0316 2007 12 MECHANICAL DRAWING Pin No. Name Function 1 2 3 4 5 6 7 8 -Vin ON/OFF +Vin +Vout2 TRIM Output RTN +Vout1 Optional Negative input voltage Remote ON/OFF Positive input voltage Positive output voltage2 Output voltage trim Positive output voltage1 TRIM2 Notes: 1 2 Pins 1-8 are 1.00mm (0.040”) diameter All pins are copper wit[...]

  • Page 13

    DS_Q48DR1R833_0316 2007 48 13 PART NUMBERING SYSTEM Q D R 1R8 33 N R F A Form Factor Input Voltage Number of Outputs Product Series Output Voltage 1 Output Voltage 2 ON/OFF Logic Pin Length Option Code Q – Quarter Brick 48 - 36-75V D-Dual Output R-Open frame 2R5-2.5V 3R3-3.3V 1R8-1.8V 1R5-1.5V 33-3.3V 50-5.0V N-Negative (Default) P-Positive R-0.1[...]