Delta Series E48SH - Manuals

Page 2 - TECHNICAL SPECIFICATIONS; PARAMETER

TECHNICAL SPECIFICATIONS (T A =25°C, airflow rate=300 LFM, V in =48Vdc, nominal Vout unless otherwise noted.) PARAMETER NOTES and CONDITIONS E48SH3R330 (Standard) Min. Typ. Max. Units ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous 75 Vdc Transient (100ms) 100ms 100 Vdc Operating Temperature Refer...

Page 3 - ELECTRICAL CHARACTERISTICS CURVES; Figure

E48SH3R330_02162007 3 ELECTRICAL CHARACTERISTICS CURVES Figure 1: Efficiency vs. load current for minimum, nominal, and maximum input voltage at 25°C Figure 2: Power dissipation vs. load current for minimum, nominal, and maximum input voltage at 25°C. Figure 3: Typical full load input characteristic...

Page 4 - For Negative Remote On/Off Logic; For Input Voltage Start up

ELECTRICAL CHARACTERISTICS CURVES E48SH3R330_02162007 4 For Negative Remote On/Off Logic Figure 4: Turn-on transient at zero load current (5 ms/div).Vin=48V.Top Trace: Vout, 2V/div; Bottom Trace: ON/OFF input,2V/div Figure 5: Turn-on transient at full rated load current (constant current load) (5 ms...

Page 5 - possible battery impedance. Measure current as shown above

ELECTRICAL CHARACTERISTICS CURVES E48SH3R330_02162007 5 Figure 8: Output voltage response to step-change in load current (75%-50% of Io, max; di/dt = 0.1A/µs). Load cap: 10µF, tantalum capacitor and 1µF ceramic capacitor. Trace: Vout (50mV/div, 100us/div), Scope measurement should be made using a BN...

Page 6 - Figure 12: Input reflected ripple current, i

ELECTRICAL CHARACTERISTICS CURVES Figure 12: Input reflected ripple current, i s , through a 12µH source inductor at nominal input voltage and rated load current (20 mA/div, 2us/div). Figure 13: Output voltage noise and ripple measurement test setup Figure 14: Output voltage ripple at nominal input ...

Page 7 - 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 10 µ F to ...

Page 8 - FEATURES DESCRIPTIONS; Over-Voltage Protection; Vout

FEATURES DESCRIPTIONS Over-Current Protection The E48SH modules include an internal output over-current protection circuit, which will endure current limiting for an unlimited duration during output overload. When the output current exceeds the OCP set point, the current limit function will work by ...

Page 9 - Vo; R trim; Frequency Synchronization

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 10 - THERMAL CONSIDERATIONS; Thermal Testing Setup; Figure 20: Wind tunnel test setup; Thermal Derating; . To enhance system reliability the power module

E48SH3R330_02162007 10 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 - PICK AND PLACE LOCATION SURFACE-MOUNT TAPE & REEL

PICK AND PLACE LOCATION SURFACE-MOUNT TAPE & REEL RECOMMENDED PAD LAYOUT (SMD) E48SH3R330_02162007 11

Page 12 - Temp

LEADED (Sn/Pb) PROCESS RECOMMEND TEMP. PROFILE Time ( sec. ) Pre-heat temp. 140~180 ° C 60~120 sec. Peak temp. 210~230 ° C 5sec. Ramp-up temp. 0.5~3.0 ° C /sec. T emperatur e ( ° C ) 50 100 150 200 250 300 60 0 120 180 240 2nd Ramp-up temp. 1.0~3.0 ° C /sec. Over 200 ° C 40~50sec. Cooling down rate ...

Page 13 - SURFACE-MOUNT MODULE THROUGH-HOLE MODULE; Name

MECHANICAL DRAWING SURFACE-MOUNT MODULE THROUGH-HOLE MODULE Pin No. Name Function 1 2 3 4 5 6 7 8 +Vin ON/OFF -Vin -Vout -SENSE TRIM +SENSE +Vout Positive input voltage Remote ON/OFF Negative input voltage Negative output voltage Negative remote sense Output voltage trim Positive remote sense Positi...

Page 15 - PART NUMBERING SYSTEM; MODEL LIST; MODEL NAME; WARRANTY

E48SH3R330_02162007 15 PART NUMBERING SYSTEM E 48 S H 3R3 30 N R F A Type of Product Input Voltage Number of Outputs Product Series Output Voltage Output Current ON/OFF Logic Pin Length Option Code E- Eighth Brick 48-36V~75V S- Single H-50A series 3R3 - 3.3V 30 - 30A N- Negative P- Positive R- 0.170...