Delta Series Q48DR - Manuals

Page 2 - TECHNICAL SPECIFICATIONS; PARAMETER

DS_Q48DR1R833_03162007 TECHNICAL SPECIFICATIONS (T A =25°C, airflow rate=300 LFM, V in =48Vdc, nominal Vout unless otherwise noted.) PARAMETER NOTES and CONDITIONS Q48DR1R833NRFA Min. Typ. Max. Units ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous 80 Vdc Transient (100ms) <100ms 100 Vdc Operati...

Page 3 - ELECTRICAL CHARACTERISTICS CURVES; Figure

ELECTRICAL CHARACTERISTICS CURVES Figure 1: Efficiency vs. load current Iout1 for minimum, nominal, and maximum input voltage at 25 ° C, for Iout2=7.5A. Figure 2: Efficiency vs. load current Iout2 for minimum, nominal, and maximum input voltage at 25 ° C, for Iout1=7.5A Figure 3: Efficiency vs. load...

Page 5 - igure 9: Typical full load input characteristics at room

DS_Q48DR1R833_03162007 5 ELECTRICAL CHARACTERISTICS CURVES Fte igure 9: Typical full load input characteristics at room mperature I Fcu o caCmth mm (2 inches to 3 inches) from the module. igure 10: Output voltage response to step-change in load rrent Iout2 (75%-50%-75% of Io, max; di/dt = 0.1A/µs) a...

Page 6 - Figure 13: Input Terminal Ripple Current-i; Strip

DS_Q48DR1R833_03162007 6 ELECTRICAL CHARACTERISTICS CURVES Figure 13: Input Terminal Ripple Current-i c , at full rated output current and nominal input voltage with 12µH source impedance and 33µF electrolytic capacitor (500 mA/div, 2us/div). Figure 14: Input reflected ripple current-i s , through a...

Page 8 - Soldering and Cleaning Considerations; DESIGN CONSIDERATIONS; Input Source Impedance

DS_Q48DR1R833_03162007 8 Do not ground one of the input pins without grounding one of the output pins. This connection may allow a non-SELV voltage to appear between the output pin and ground. The power module has extra-low voltage (ELV) outputs when all inputs are ELV. This power module is not inte...

Page 9 - FEATURES DESCRIPTIONS; Over-Voltage Protection

DS_Q48DR1R833_03162007 9 Figure 19: Remote on/off implementation 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 Vout1(+) or RTN. The TRIM pin should be left open if this fea...

Page 11 - THERMAL CONSIDERATIONS; Thermal Testing Setup; Figure 22: Wind tunnel test setup; THERMAL CURVES; Figure 23: Hot spot temperature measured point

DS_Q48DR1R833_03162007 Note: Wind Tunnel Test Setup Figure Dim nsions are in millimeters and (Inche 11 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 temperatu...

Page 12 - MECHANICAL DRAWING; Function

DS_Q48DR1R833_03162007 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...

Page 13 - PART NUMBERING SYSTEM; MODEL LIST; MODEL NAME

DS_Q48DR1R833_03162007 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 3R3-3.3V1R8-1.8V1R5-1.5V 33-3.3V5...