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FEATURES
High Efficiency: 91.5% @ 15V/4A
Size: 58.4mmx22.8mmx8.4mm
(2.30”x0.90”x0.33”)
Standard footprint
Industry standard pin out
Fixed frequency operation: 350KHz
Input UVLO, Output OCP, OVP, OTP
Basic insulation
No minimum load required
2:1 Input voltage range
ISO 9001, TL 9000, ISO 14001, QS9000,
OHSAS18001 certified manufacturing
facility
UL/cUL 60950-1 (US & Canada)
recognized, and TUV (EN60950-1)
certified
CE mark meets 73/23/EEC and
93/6
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TECHNICAL SPECIFICATIONS (T =25°C, airflow rate=300 LFM, V =48Vdc, nominal Vout unless otherwise noted) A in PARAMETER NOTES and CONDITIONS E48SR15004 (Standard) Min. Typ. Max. Units ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous 80 Vdc Transient (100ms) 100ms 100 Vdc Operating Case Temperature Please refer to Fig. 21 for the measuring point -40 106 °C Storage Temperature -55 125 °C Input/Output Isolation Voltage 2250 Vdc INPUT CHARACTERISTICS Operating
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ELECTRICAL CHARACTERISTICS CURVES Figure 1: Efficiency vs. load current for minimum, nominal, and Figure 2: Power dissipation vs. load current for minimum, maximum input voltage at 25°C nominal, and maximum input voltage at 25°C. Figure 3: Typical full load input characteristics at room temperature DS_E48SR15004_05222008 3
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ELECTRICAL CHARACTERISTICS CURVES For Negative Remote On/Off Logic 0 0 0 0 Figure 4: Turn-on transient at full rated load current (resistor Figure 5: Turn-on transient at zero load current (2ms/div). load) (2ms/div). Vin=48V. Top Trace: Vout, 5V/div; Bottom Vin=48V.Top Trace: Vout, 5V/div; Bottom Trace: ON/OFF input, Trace: ON/OFF input, 5V/div 5V/div For Positive Remote On/Off Logic 0 0 0 0 Figure 6: Turn-on transient at full rated load current (resistor Figure 7: Turn-on transient at
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ELECTRICAL CHARACTERISTICS CURVES 0 0 0 0 Figure 8: Output voltage response to step-change in load Figure 9: Output voltage response to step-change in load current (75%-50%-75% of Io, max; di/dt = 0.1A/µs). Load cap: current (75%-50%-75% of Io, max; di/dt = 2.5A/µs). Load cap: 10µF tantalum capacitor and 1µF ceramic capacitor. Top Trace: 47µF, 35m Ω ESR solid electrolytic capacitor and 1µF ceramic Vout (0.2V/div,200us/div), Bottom Trace: Iout (1A/div). Scope capacitor. Top Trace: Vout (0
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ELECTRICAL CHARACTERISTICS CURVES 0 0 Figure 11: Input Terminal Ripple Current, i , at full rated output Figure 12: Input reflected ripple current, i , through a 12µH c s current and nominal input voltage with 12µH source impedance source inductor at nominal input voltage and rated load current and 33µF electrolytic capacitor (500 mA/div,2us/div) (20 mA/div,2us/div) Copper Strip Vo(+) SCOPE RESISTIVE 10u 1u LOAD Vo(-) Figure 13: Output voltage noise and ripple measurement test
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ELECTRICAL CHARACTERISTICS CURVES 0 Figure 14: Output voltage ripple at nominal input voltage and Figure 15: Output voltage vs. load current showing typical rated load current (Io=4A)(50 mV/div, 2us/div) current limit curves and converter shutdown points Load capacitance: 1µF ceramic capacitor and 10µF tantalum capacitor. Bandwidth: 20 MHz. Scope measurement should be made using a BNC cable (length shorter than 20 inches). Position the load between 51 mm to 76 mm (2 inches to 3 inches)
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DESIGN CONSIDERATIONS Input Source Impedance The input source must be insulated from the ac The impedance of the input source connecting to the mains by reinforced or double insulation. DC/DC power modules will interact with the modules and affect the stability. A low ac-impedance input source The input terminals of the module are not operator is recommended. If the source inductance is more than accessible. a few μH, we advise adding a 10 to 100 μF electrolytic capac
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FEATURES DESCRIPTIONS Vi(+) Vo(+) Over-Current Protection Sense(+) The modules include an internal output over-current ON/OFF protection circuit, which will endure current limiting for an unlimited duration during output overload. If the Sense(-) output current exceeds the OCP set point, the modules will automatically shut down (hiccup mode). Vi(-) Vo(-) The modules will try to restart after shutdown. If the overload condition still exists, the module will shut down Figure 16:
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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 19: Circuit configuration for trim-up (increase output voltage) If the external resistor is connected between the TRIM and SENSE (+) the output voltage set point increases (Fig
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THERMAL CONSIDERATIONS Thermal management is an important part of the system Thermal Derating design. To ensure proper, reliable operation, sufficient cooling of the power module is needed over the entire Heat can be removed by increasing airflow over the module. temperature range of the module. Convection cooling is The hottest point of the module is less than 106℃. To usually the dominant mode of heat transfer. enhance system reliability, the power module should always be operate
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PICK AND PLACE LOCATION SURFACE-MOUNT TAPE & REEL RECOMMENDED PAD LAYOUT (SMD) DS_E48SR15004_05222008 12
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LEADED (Sn/Pb) PROCESS RECOMMEND TEMP. PROFILE Peak temp. 2nd Ramp-up temp. 210~230°C 5sec. 1.0~3.0 C /sec. ° 250 Pre-heat temp. 140~180 C 60~120 sec. ° 200 Cooling down rate <3°C /sec. Ramp-up temp. 150 0.5~3.0°C /sec. 100 Over 200°C 40~50sec. 50 0 1 60 20 180 240 300 Time ( sec. ) Note: The temperature refers to the pin of E48SR, measured on the pin +Vout joint. LEAD FREE (SAC) PROCESS RECOMMEND TEMP. PROFILE Temp. Peak Temp. 240 ~ 245 ℃ 217℃ Ramp down max. 4 ℃/sec. 200℃
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MECHANICAL DRAWING Surface-mount module Through-hole module Pin No. Name Function 1 +Vin Positive input voltage 2 ON/OFF Remote ON/OFF 3 -Vin Negative input voltage 4 -Vout Negative output voltage 5 -SENSE Negative remote sense 6 TRIM Output voltage trim 7 +SENSE Positive remote sense 8 +Vout Positive output voltage DS_E48SR15004_05222008 14
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PART NUMBERING SYSTEM E 48 S R 150 04 N R F A Type of Input Number of Product Output Output ON/OFF Pin Length Option Code Product Voltage Outputs Series Voltage Current Logic E- Eighth 48V S- Single Feature 150-15V 04-4A A-Standard F- RoHS 6/6 N- Negative R - 0.170” Brick Functions ( Lead Free) (Default) (Default) P- Positive N - 0.145” K - 0.110” M - SMD pin MODEL LIST MODEL NAME INPUT OUTPUT EFF @ 100% LOAD E48SR1R225NRFA 36V~75V 1.3A 1.2V 25A 88.0% E48SR1R525NRFA 36V~
