Delta Series H48SA - Manuals

Page 2 - TECHNICAL SPECIFICATIONS; PARAMETER; NOTES and CONDITIONS

DS_H48SA12025_05052008 2 TECHNICAL SPECIFICATIONS (T A =25°C, airflow rate=300 LFM, V in =48Vdc, nominal Vout unless otherwise noted.) PARAMETER NOTES and CONDITIONS H48SA12025 (Standard) Min. Typ. Max. Units ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous 80 Vdc Transient (100ms) 100ms 100 Vdc Op...

Page 3 - ELECTRICAL CHARACTERISTICS CURVES; Figure

DS_H48SA12025_05052008 ELECTRICAL CHARACTERISTICS CURVES 60 65 70 75 80 85 90 95 5 10 15 20 25 OUT PUT CURRENT (A) EF F IC IEN C Y ( % ) 36V in 75V in 48V in 0 5 10 15 20 25 30 0 5 10 15 20 25 OUT PUT CURRENT (A) PO W E R D ISSI PAT IO N ( W ) 36V in 48V in 75V in Figure 1: Efficiency vs. load curre...

Page 4 - Typical input characteristics at room temperature.

DS_H48SA12025_05052008 4 ELECTRICAL CHARACTERISTICS CURVES 60 65 70 75 80 85 90 95 5 10 15 20 25 OUT PUT CURRENT (A) EF F IC IEN C Y ( % ) 36V in 75V in 48V in 0 5 10 15 20 25 30 0 5 10 15 20 25 OUT PUT CURRENT (A) P O W E R DI S S IP A T IO N ( W ) 36V in 48V in 75V in Figure 5: Efficiency vs. outp...

Page 5 - is; Output voltage response to step-change in load

DS_H48SA12025_05052008 5 ELECTRICAL CHARACTERISTICS CURVES Figure 9: Turn-on transient at zero load current, 4 ms/div; Top Trace: Vout, 5V/div; Bottom Trace: ON/OFF input,5V/div. Figure 10: Output voltage response to step-change in load current, 200mV/div, 200us/div. 75%-50%-75% of Io, max, di/dt = ...

Page 7 - DESIGN CONSIDERATIONS; Input Source Impedance; Test Result; Safety Considerations

DS_H48SA12025_05052008 7 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 μ H, we a...

Page 8 - FEATURES DESCRIPTIONS; Over-Voltage Protection; Remote on/off implementation; Remote Sense; Vout; Effective circuit configuration for remote sense

DS_H48SA12025_05052008 FEATURES DESCRIPTIONS Over-Current Protection The modules include an internal output over-current protection circuit. If the output current exceeds the OCP set point, the modules will automatically shut down, and enter hiccup mode or latch mode, which is optional. For hiccup m...

Page 10 - THERMAL CONSIDERATIONS; Thermal Testing Setup; Wind tunnel test setup

DS_H48SA12025_05052008 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 ...

Page 11 - Temperature measurement location for openframe; Temperature measurement location for heatspreader

DS_H48SA12025_05052008 THERMAL CURVES H48SA12025(Standard) Output Current vs. Ambient Temperature and Air Velocity @Vin = 48V (Either Orientation) 0 5 10 15 20 25 25 30 35 40 45 50 55 60 65 70 75 80 85 Natural Convection 100LFM 300LFM 200LFM Ambient Temperature( ℃ ) Output Current (A) 600LFM 500LFM ...

Page 12 - MECHANICAL DRAWING (WITHOUT HEATSPREADER); Function

DS_H48SA12025_05052008 12 MECHANICAL DRAWING (WITHOUT HEATSPREADER) Pin No. Name Function 1 2 3 4 5 6 7 8 9 +Vin ON/OFF CASE -Vin -Vout -SENSE TRIM +SENSE +Vout Positive input voltage Remote ON/OFF Case pin Negative input voltage Negative output voltage Negative remote sense Output voltage trim Posi...

Page 14 - PART NUMBERING SYSTEM; MODEL LIST; Part Number; WARRANTY

DS_H48SA12025_05052008 14 PART NUMBERING SYSTEM H 48 S A 120 25 N N F A Form Factor Input Voltage Number of Outputs Product Series Output Voltage Output Current ON/OFF Logic Pin Length Option Code H - Half- Brick 48V S- Single A - Advanced 120- 12V 25- 25A N - NegativeP - Positive N - 0.145” F- RoHS...