Delta F48SA - Manuals - manualsarea.com

Page 2 - TECHNICAL SPECIFICATIONS; PARAMETER

TECHNICAL SPECIFICATIONS (T A =25°C, V in =48Vdc, nominal Vout unless otherwise noted.) DS_F48SA28025_12072007 2 PARAMETER NOTES and CONDITIONS F48SA28025 (Standard) Min. Typ. Max. Units ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous 80 Vdc Transient (100ms) 100ms 100 Vdc Operating Temperature Pl...

Page 3 - ELECTRICAL CHARACTERISTICS CURVES; maximum input voltage at 25°C.; Power dissipation vs. load current for minimum,

ELECTRICAL CHARACTERISTICS CURVES Figure 1: Efficiency vs. load current for minimum, nominal, and maximum input voltage at 25°C. 70 75 80 85 90 95 0 5 10 15 20 25 30 OUTPUT CURRENT (A) EF F ICI ENCY (%) 36Vin 48Vin 75Vin Figure 2: Power dissipation vs. load current for minimum, nominal, and maximum ...

Page 4 - For Negative Remote On/Off Logic; For Positive Remote On/Off Logic; Turn-on transient at full rated load current (resistive

ELECTRICAL CHARACTERISTICS CURVES For Negative Remote On/Off Logic Figure 3: Turn-on transient at full rated load current (resistive load). CH3: Vout;5V/div; CH1: ON/OFF input: 5V/div Figure 4: Turn-on transient at minimum load current . CH3: Vout: 5V/div; CH1: ON/OFF input:5V/div For Positive Remot...

Page 5 - Figure

ELECTRICAL CHARACTERISTICS CURVES Figure 7: Output voltage response to step-change in load current (75%-50% of Io, max; di/dt = 1A/µs). Load cap: 470µF aluminum ,10uF Low ESR capacitor and 1µF ceramic capacitor. Top Trace: Vout (200mV/div), Bottom Trace: Iout (10A/div). Scope measurement should be m...

Page 6 - Copper Strip

ELECTRICAL CHARACTERISTICS CURVES Figure 10: Input Terminal Ripple Current, i c , at full rated output current and nominal input voltage with 15µH source impedance and 220µF electrolytic capacitor (1A/div). Figure 11: Input reflected ripple current, i s , through a 15µH source inductor at nominal in...

Page 7 - Output voltage ripple at nominal input voltage and

ELECTRICAL CHARACTERISTICS CURVES Figure 13: Output voltage ripple at nominal input voltage and rated load current (100 mV/div). Load capacitance:470uF aluminum, 1µF ceramic capacitor and 10µFlow ESR capacitor. Bandwidth: 20 MHz. Scope measurement should be made using a BNC cable (length shorter tha...

Page 8 - DESIGN CONSIDERATIONS; Input Source Impedance

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 advise adding a 220 to 470...

Page 9 - FEATURES DESCRIPTIONS; Over-Voltage Protection; Input side on off control; Remote on/off implementation; Remote Sense; Vout; Effective circuit configuration for remote sense

DS_F48SA28025_12072007 9 FEATURES DESCRIPTIONS Over-Current Protection The modules include an internal output over-current protection circuit, which will endure current limiting for an unlimited duration during output overload. If the output current exceeds the OCP set point, the modules will automa...

Page 11 - THERMAL CONSIDERATIONS; Thermal Derating; THERMAL CURVES; Temperature measurement location viewed from the; Wind tunnel test setup

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 transfer. Hence, the ch...

Page 12 - MECHANICAL DRAWING; Name

DS_F48SA28025_12072007 12 MECHANICAL DRAWING Pin No. Name Function 1 2 -Vin +Vin 3 4 5 6 7 8 9 10 -ON/OFF Ne age FF Pin S ecificatio +ON/OFF +Vout +Vout +Vout -Vout -Vout -Vout gative input volt sitive input v Po oltage Negative Remote ON/OPositive Remote ON/OFF Positive output voltage Positive outp...

Page 13 - MODEL NAME; CONTACT

DS_F48SA28025_12072007 13 PART NUMBERING SYSTEM F 48 S A 280 25 P R F A Form Factor Input Voltage Number of Outputs Product Series Output Voltage Output Current ON/OFF Logic Pin Length Option Code F- Full Brick 48V S- Single A- Advanced 280- 28V 25- 25A P- Positive R- 0.170” F- RoHS 6/6 (Lead Free) ...