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Delta Electronics Q48DC manual

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Table of contents for the manual

  • Page 1

    FEA TURES  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 volt age  ISO 9001, TL 9000, ISO 14001, QS9000, OHSAS18001 certif[...]

  • Page 2

    DS_Q48DC12003_031 12008 2 TECHNICAL SPECIFICA TIONS (T A =25°C, airflow rate=300 LFM, V in =48Vdc, nominal V out u nless otherwise noted.) PA R A M E T E R NOTES and CONDITIONS Q48DC12003NR A Min. T yp . Max. Unit s ABSOLUTE MAXIMUM RA TINGS Input V oltage Continuous 80 Vdc T ransient 100ms 100 Vdc Operating T emperature Refer to Figure 20 for mea[...]

  • Page 3

    DS_Q48DC12003_031 12008 3 ELECTRICAL CHARACTERISTICS CUR VES 60 63 66 69 72 75 78 81 84 87 90 0.3 0.7 1.1 1.5 1.9 2.3 2.7 O UTPUT CURRENT( A ) E FFI C I E NC Y (%) 1 48V in 75V in 36V in 3.0 3.8 4.6 5.4 6.2 7.0 7.8 8.6 9.4 10.2 0.3 0.7 1.1 1.5 1.9 2. 3 2.7 O UTPUT CURRE NT( A ) PO WER DI SSI PAT IO N( W) 1 36V in 48V in 75V in Figure 1: Effici ency[...]

  • Page 4

    DS_Q48DC12003_031 12008 4 ELECTRICAL CHARACTERISTICS CUR VES Figure 4: T urn-on transient at zero lo ad current (10ms/div). Vin =4 8 V . T op T race: Vout: 5V/div; Bottom T race: ON/OFF input: 5V/div . Figure 5: T urn-on transient at full rated l oad current (resistive load) (10 ms/div). V in=48V . T op T race: V out; 5V/div; Bottom T race: ON/OFF [...]

  • Page 5

    DS_Q48DC12003_031 12008 5 ELECTRICAL CHARACTERISTICS CUR VES 60 63 66 69 72 75 78 81 84 87 90 0.3 0.7 1.1 1.5 1.9 2.3 2.7 O UTPUT CURRENT( A ) E FFI C I E NC Y (%) 1 48V in 75V in 36V in 3.0 3.8 4.6 5.4 6.2 7.0 7.8 8.6 9.4 10.2 0.3 0.7 1. 1 1.5 1.9 2. 3 2.7 OUT PUT CURRE NT ( A ) PO WER DI SSI PAT IO N ( W) 1 36V in 48V in 75V in Figure 1: Effici e[...]

  • Page 6

    DS_Q48DC12003_031 12008 6 ELECTRICAL CHARACTERISTICS CUR VES Figure 10: T est set-up diagram showing measure ment points for Input T erminal R ipple Current and Input Reflecte d Ripple Current. Note: Measured input reflected-ripple curr ent with a simulated source Inductance (L TEST ) of 12 μ H. Cap ac itor Cs offset possible battery imped ance. M[...]

  • Page 7

    DS_Q48DC12003_031 12008 7 ELECTRICAL CHARACTERISTICS CUR VES Vo(-) Vo(+) 10u 1u Copper Strip SCOPE RESISTI V LOAD Figure 13: Output voltage noise and ripple measure ment test setup. Figure 14: Output voltage ripple at nominal input voltage (Vin=48V) and rated load current (Io1=Io2=2. 7A,20 mV/d iv). Load capacit ance: 1µF ceramic cap acito r and 1[...]

  • Page 8

    DS_Q48DC12003_031 12008 8 DESIGN CONSIDERA TIONS Input Source Impedance The impedance of the input sou rce connecting to the DC/DC powe r modules will intera ct with the modul es and affect the st ability . A low ac-impedance input source is recommended. If the source induct ance is more than a few μ H, we advise adding a 10 to 100 μ F electrolyt[...]

  • Page 9

    DS_Q48DC12003_031 12008 9 FEA TURES DESCRIPTIONS Over-Current Protection The modules include an internal o utput over-current protection circuit, which will endure current limiting for an unlimited duration during output overloa d. If the output current exceeds the OCP set poi nt, the modules will automatically shut down (hiccup mode). The modules [...]

  • Page 10

    DS_Q48DC12003_031 12008 10 FEA TURES DESCRIPTIONS (CON.) Output V oltage Adjustment (TRIM) To increase or decrease the output voltage set point, the modules may be connected with an external resistor between the TRIM pi n and eit her the Vo(+) or Vo(-). The TRIM pin should be left open if this feature is not used. R trim-down Vo(+) Trim Vo(-) Rtn F[...]

  • Page 11

    DS_Q48DC12003_031 12008 11 THERMAL CONSIDERA TIONS Thermal management is an importa nt part of the system design. To ensure proper, re liable operation, su fficient cooling of the power module i s needed over the entire temperature range of the m odule. Convection cool ing is usually the dominant mode of heat transfer. Hence, the choice of equipmen[...]

  • Page 12

    DS_Q48DC12003_031 12008 12 MECHANICAL DRA WING Pin No. Name Function 1 2 3 4 5 6 7 +Vin ON/OFF -Vin -V out GND Tr im +V out Positive input voltage Remote ON/OFF Negative input voltage Negative output voltage Ground Output voltage trim Positive output voltage[...]

  • Page 13

    DS_Q48DC12003_031 12008 13 P ART NUMBERING SYSTEM Q 48 D C 120 03 N R F A Product Ty p e Input V olt age Number of Output s Product Series Output V olt age Output Current ON/OFF Logic Pin Length Option Code Q - Quarter Brick 48V D - Dual Output C - 2nd generation of bipolar dual output 120 - 12.1V 03 - 2.7A N - Negative P - Positive R - 0.150” F-[...]