Delta Series S48SS - Manuals

Page 2 - TECHNICAL SPECIFICATIONS; PARAMETER

DS_s48SS12001_06082006 TECHNICAL SPECIFICATIONS (T A =25°C, airflow rate=300 LFM, V in =48Vdc, nominal Vout unless otherwise noted.) PARAMETER NOTES and CONDITIONS S48SS12001NRFA Min. Typ. Max. Units ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous 80 Vdc Transient (100ms) 100ms 100 Vdc Operating T...

Page 3 - ELECTRICAL CHARACTERISTICS CURVES; maximum input voltage at 25; Typical input characteristics at room temperature.

DS_s48SS12001_06082006 ELECTRICAL CHARACTERISTICS CURVES 60 65 70 75 80 85 90 0.25 0.5 0.75 1 1.25 OUTPUT CURRENT (A) EF F IC IEN C Y ( % ) 36Vin 48Vin 75Vin 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 0.25 0.5 0.75 1 1.25 OUTPUT CURRENT (A) P O W E R D ISSI PAT IO N ( W Figure 1: Efficiency vs. load curren...

Page 4 - Figure5

DS_s48SS12001_06082006 4 ELECTRICAL CHARACTERISTICS CURVES Figure5 : Turn-on transient at zero load current (10 ms/div). Top Trace: Vout (5V/div); Bottom Trace: ON/OFF Control (2V/div). Figure 6: Output voltage response to step-change in load current (50%-75%-50% of Io, max; di/dt = 0.1A/µs). Load c...

Page 5 - Figure 9

DS_s48SS12001_06082006 ELECTRICAL CHARACTERISTICS CURVES Strip Copper Vo(-) Vo(+) 10u 1u SCOPE RESISTIVE LOAD Figure 9 : Output voltage noise and ripple measurement test setup. Scope measurement should be made using a BNC cable (length shorter than 20 inches) . Position the load between 51 mm to 76 ...

Page 6 - Case temperature measurement location. Pin locations are; Top View

DS_s48SS12001_06082006 Figure 14: Output current vs. ambient temperature and air velocity (Vin=75V) Figure 15: Power dissipation vs. ambient temperature and air velocity . S48SS12001NR A Power Dissipation vs. Ambient Temperature and Air Velocity 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2....

Page 7 - DESIGN CONSIDERATION; Layout and EMC Considerations; The input source must be insulated from any

DS_s48SS12001_06082006 DESIGN CONSIDERATION 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 µ H, we advi...

Page 8 - Trim; Over-Voltage Protection; Trim; ΚΩ; ΚΩ

DS_s48SS12001_06082006 8 Vo(+) Vo(-) Trim R trim-up Figure 17: Circuit configuration for trim-up (increase output voltage) If the external resistor is connected between the TRIM and Vo - the output voltage set point increases. The external resistor value required to obtain a percentage output voltag...

Page 9 - THERMAL CONSIDERATIONS; Thermal Testing Setup; Wind tunnel test setup

DS_s48SS12001_06082006 9 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 hea...

Page 10 - MECHANICAL DRAWING; Name

DS_s48SS12001_06082006 MECHANICAL DRAWING Pin No. Name Function 1 +Vout Positive output voltage 2 -Vout Negative output voltage 3 Trim Output voltage trim 4 NC No Connection 5 NC No Connection 6 NC No Connection 7 NC No Connection 8 ON/OFF ON/OFF Logic 9 NC No Connection 10 NC No Connection 11 -Vin ...

Page 11 - PART NUMBERING SYSTEM; MODEL LIST; MODEL NAME

DS_s48SS12001_06082006 14 PART NUMBERING SYSTEM S 48 S S 120 01 N R F A Form Factor Input Voltage Number of Outputs Product Series Output Voltage Output Current ON/OFF Logic Pin Length Option Code S- Small Power 48V- 36V~75V S- Single S- SMD 120- 12.0V 01- 1.25A N- Negative P- Positive R- SMD Pin F-...