Delta H48SN - Manuals - manualsarea.com

Page 2 - TECHNICAL SPECIFICATIONS; PARAMETER

TECHNICAL SPECIFICATIONS (T A =25°C, airflow rate=600 LFM, V in =48Vdc, nominal Vout unless otherwise noted.) H48SN28012_01172008 2 PARAMETER NOTES and CONDITIONS H48SN28012 (Standard) Min. Typ. Max. Units ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous 80 Vdc Transient (100ms) 100ms 100 Vdc Opera...

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

ELECTRICAL CHARACTERISTICS CURVES 0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 0 2 4 6 8 10 12 OUTPUT CURRENT(A) POW E R D ISSIPAT ION ( W ) 70 75 80 85 90 95 0 2 4 6 8 10 12 OU TPU T C U R R EN T ( A) E FFICIE NCY ( % ) 14 36Vi n 48Vi n 75Vi n 14 36Vin 48Vin 75Vin Figure 1: Efficiency vs. load c...

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 4: Turn-on transient at full rated load current (resistive load) (10ms/div). CH3: Vout;5V/div; CH1: ON/OFF input: 2V/div Figure 5: Turn-on transient at minimum load current (10ms/div). CH3: Vout: 5V/div; CH1: ON/OFF input: 2V/...

Page 5 - Figure

ELECTRICAL CHARACTERISTICS CURVES Figure 8: Output voltage response to step-change in load current (75%-50% of Io, max; di/dt = 1A/10µS). Load cap: 330µF aluminum,10uF Low ESR capacitor and 1µF ceramic capacitor. Top Trace: Vout (100mV/div), Bottom Trace: Iout (5A/div). Scope measurement should be m...

Page 6 - Copper Strip

ELECTRICAL CHARACTERISTICS CURVES Figure 11: Input Terminal Ripple Current, i c , at full rated output current and nominal input voltage with 12µH source impedance and 220µF electrolytic capacitor (1A/div). Figure 12: Input reflected ripple current, i s , through a 12µH source inductor at nominal in...

Page 7 - Output voltage ripple at nominal input voltage and

ELECTRICAL CHARACTERISTICS CURVES 0.0 5.0 10.0 15.0 20.0 25.0 30.0 0 2 4 6 8 10 12 14 16 18 20 LOAD CURRENT (A) O U T P UT VO LT AG E ( V ) Vin=48V Figure 14: Output voltage ripple at nominal input voltage and rated load current (20 mV/div). Load capacitance:330uF aluminum, 1µF ceramic capacitor and...

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; Remote on/off implementation; Remote Sense; Vout; Resistance; Effective circuit configuration for remote sense

H48SN28012_01172008 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 automatic...

Page 10 - Circuit configuration for trim-down (decrease; Circuit configuration for trim-up (increase output; ΚΩ

FEATURES DESCRIPTIONS (CON.) 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 the SENSE(+) or SENSE(-). The TRIM pin should be left open if this feature is not used. Figure 18...

Page 11 - THERMAL CONSIDERATIONS; Thermal Derating; THERMAL CURVES; Temperature measurement location; Output power vs. hot spot temperature (Either

THERMAL CONSIDERATIONS Thermal Derating 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 transf...

Page 12 - MECHANICAL DRAWING; Name; SE; Pin S ecificatio; with Tin pla

H48SN28012_01172008 12 MECHANICAL DRAWING Pin No. Name Function 1 2 3 4 -Vin CASE 5 6 7 8 9 ON/OFF SE Ne age e Pin S ecificatio gative input voltse ground CaRemote ON/OFF Positive input voltagPositive output voltage Positive remote sense Output voltage trim Negative remote senseNegative output volta...

Page 13 - PART NUMBERING SYSTEM; N R; MODEL LIST; MODEL NAME; CONTACT

H48SN28012_01172008 13 PART NUMBERING SYSTEM H 48 S N 280 12 N R 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 N- 350W series 280- 28V 12- 12.5A N- Negative P- Positive R- 0.170”N- 0.145” K...