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FEATURES
High efficiency: 90% @5V/7A
Industry standard 1x2 pin out
Size: 33.0x24.4x8.55mm
(1.30”x0.96”x0.34”)
SMD and Through-hole versions
Fixed frequency operation
2:1 input voltage range
Input UVLO, OVP
OTP and output OCP, OVP (default is
auto-restart)
Output voltage trim ±10%
Negative On/Off
Monotonic startup into normal and
pre-biased loads
2250V isolation and basic insulation
No minimum load required
ISO 9001, TL 9000, ISO 14001, QS9000,
OHSAS18001 ce
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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 S48SP05007 (Standard) Min. Typ. Max. Units ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous 80 Vdc Transient(100ms) 100ms 100 Vdc Operating Case Temperature Refer to Figure 20 for measuring point -40 +111 °C Storage Temperature -55 +125 °C Input/Output Isolation Voltage 2250 Vdc INPUT CHARACTERISTICS Operating Input
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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_S48SP05007_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 (5 ms/div). Figure 5: Turn-on transient at zero load current (5 ms/div). Vin=48V. Top Trace: Vout, 2V/div; Bottom Trace: ON/OFF input, Vin=48V. Top Trace: Vout, 2V/div, Bottom Trace: ON/OFF input, 2V/div 2V/div For Positive Remote On/Off Logic 0 0 0 0 Figure 6: Turn-on transient at full rated load current (5 ms/div). Figure 7: Turn-on tra
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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% of Io, max; di/dt = 0.1A/µs). Load cap: 10µF current (50%-75% of Io, max; di/dt = 0.1A/µs). Load cap: 10µF tantalum capacitor and 1µF ceramic capacitor. Top Trace: Vout tantalum capacitor and 1µF ceramic capacitor. Top Trace: Vout (100mV/div, 50us/div), Bottom Trace: Iout (2A/div). Scope (100mV/div, 50us/div
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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 (100mA/div, 1us/div) (20 mA/div, 1us/div) Copper Strip Vo(+) SCOPE RESISTIVE 10u 1u LOAD Vo(-) Figure 13: Output voltage noise and ripple measurement test
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DESIGN CONSIDERATIONS The input source must be insulated from the ac Input Source Impedance mains by reinforced or double insulation. The impedance of the input source connecting to the The input terminals of the module are not operator DC/DC power modules will interact with the modules accessible. and affect the stability. A low ac-impedance input source is recommended. If the source inductance is more than If the metal baseplate is grounded, one Vi pin and a few μH,
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FEATURES DESCRIPTIONS Remote On/Off Over-Current Protection The remote on/off feature on the module can be either The modules include an internal output over-current protection circuit, which will endure current limiting for negative or positive logic. Negative logic turns the module on during a logic low and off during a logic high. Positive an unlimited duration during output overload. If the output current exceeds the OCP set point, the modules logic turns the modules on dur
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FEATURES DESCRIPTIONS (CON.) Output Voltage Adjustment To increase or decrease the output voltage set point, the modules may be connected with an external ON/OFF ON/OFF Vo Vo (- (-) ) resistor between the TRIM pin and either the Vo(+) or R R Vo(-). The TRIM pin should be left open if this feature tr triim m- -u up p is not used. Vi (-) Vi (-) Trim Trim R R Loa Load d Vi (+) Vi (+) Vo Vo (+ (+) ) V V Vo o o (-) (-) (-) ON ON ON/ / /O O OF F FF F F Figure 18: Circuit configuratio
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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. To temperature range of the module. Convection cooling is enhance system reliability, the power module should always be usually the dominant mode of heat transfer. operated below the maximum operating temperature. If the te
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PICK AND PLACE LOCATION SURFACE-MOUNT TAPE & REEL RECOMMENDED PAD LAYOUT (SMD) DS_S48SP05007_05222008 11
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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. 0.5~3.0°C /sec. 150 100 Over 200°C 40~50sec. 50 0 1 60 20 180 240 300 Time ( sec. ) Note: The temperature refers to the pin of S48SP, 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 -Vin Negative input voltage 3 ON/OFF (Optional) Remote ON/OFF (Optional) 4 -Vout Negative output voltage 5 TRIM (Optional) Output voltage trim (Optional) 6 +Vout Positive output voltage DS_S48SP05007_05222008 13
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PART NUMBERING SYSTEM R S 48 S P 050 07 N F B Product Input Number of Product Output Output Pin ON/OFF Logic Option Code Type Voltage Outputs Series Voltage Current Length/Type S - Small 48 - S - Single 1x1, 10A 050 - 5V 07 - 7A N - Negative R - 0.170” F- RoHS 6/6 A - No trim pin Power 36V~75V (Default) (Default) (Lead Free) B - With trim pin P - Positive N - 0.145” (Default) E - No remote K - 0.110” on/off control pin M - SMD MODEL LIST MODEL NAME INPUT OUTPUT EFF @ 100% LOAD
