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FEATURES
High efficiency: 92.0% @3.3V/30A
Size: 58.4mm x 22.8mm x9.5mm
(2.30”x0.90”x0.37”)
Industry standard pin out
Fixed frequency operation
Input UVLO, Output OTP, OCP, OVP
Monotonic startup into normal and
pre-biased loads
Secondary control, very fast transient
response
2250V Isolation and basic insulation
No minimum load required
No negative current during power or enable
on/off
ISO 9001, TL 9000, ISO 14001, QS 9000,
OHSAS 18001 certified manufact
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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 E48SH3R330 (Standard) Min. Typ. Max. Units ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous 75 Vdc Transient (100ms) 100ms 100 Vdc Operating Temperature Refer to Figure 21 for measuring point -40 129 °C Storage Temperature -55 125 °C Input/Output Isolation Voltage 2250 Vdc INPUT CHARACTERISTICS Operating Input Voltag
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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. 4 3.5 3 2.5 2 1.5 1 0.5 0 30 38 46 54 62 70 78 INPUT VOLTAGE (V) Figure 3: Typical full load input characteristics at room temperature E48SH3R330_02162007 3 INPUT CURRENT(A)
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ELECTRICAL CHARACTERISTICS CURVES For Negative Remote On/Off Logic Figure 4: Turn-on transient at zero load current (5 ms/div). Figure 5: Turn-on transient at full rated load current (constant Vin=48V.Top Trace: Vout, 2V/div; Bottom Trace: ON/OFF input, current load) (5 ms/div). Vin=48V.Top Trace: Vout, 2V/div; 2V/div Bottom Trace: ON/OFF input, 2V/div For Input Voltage Start up Figure 6: Turn-on transient at zero load current (5 ms/div). Figure 7: Turn-on transient at ful
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ELECTRICAL CHARACTERISTICS CURVES 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. Trace: Vout tantalum capacitor and 1µF ceramic capacitor. Trace: Vout (50mV/div, 100us/div), Scope measurement should be made (50mV/div, 100us/div), Scope measurement
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ELECTRICAL CHARACTERISTICS CURVES Copper Strip Vo(+) SCOPE RESISTIVE 10u 1u LOAD Vo(-) Figure 12: Input reflected ripple current, i , through a 12µH Figure 13: Output voltage noise and ripple measurement test s source inductor at nominal input voltage and rated load current setup (20 mA/div, 2us/div). Figure 14: Output voltage ripple at nominal input voltage and Figure 15: Output voltage vs. load current showing typical rated load current (Io=30A)(50 mV/div, 2us/div) curre
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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 and accessible. affect the stability. A low ac-impedance input source is recommended. If the source inductance is more than a If the metal baseplate is grounded, one Vi pin and few µH, w
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FEATURES DESCRIPTIONS Vi(+) Vo(+) Over-Current Protection Sense(+) The E48SH modules include an internal output ON/OFF over-current protection circuit, which will endure current limiting for an unlimited duration during output overload. Sense(-) When the output current exceeds the OCP set point, the current limit function will work by initially reduce duty Vi(-) Vo(-) cycle of the module, the unit will go out of regulation but remains in safe operating area before the output drops
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FEATURES DESCRIPTIONS (CON.) If the external resistor is connected between the TRIM Output Voltage Adjustment (TRIM) and SENSE (+) the output voltage set point increases (Fig. 19). The external resistor value required to obtain To increase or decrease the output voltage set point, a percentage output voltage change △% is defined the modules may be connected with an external as: resistor between the TRIM pin and either the SENSE(+) or SENSE(-). The TRIM pin should be left 5.11V
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Thermal Derating THERMAL CONSIDERATIONS Heat can be removed by increasing airflow over the Thermal management is an important part of the system module. The hottest point temperature of the module is design. To ensure proper, reliable operation, sufficient 129℃. To enhance system reliability; the power module cooling of the power module is needed over the entire should always be operated below the maximum temperature range of the module. Convection cooling is operating temperature.
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PICK AND PLACE LOCATION SURFACE-MOUNT TAPE & REEL RECOMMENDED PAD LAYOUT (SMD) E48SH3R330_02162007 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 E48SH, 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℃ Pr
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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 E48SH3R330_02162007 13
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MECHANICAL DRAWING (WITH HEATSPREADER) THROUGH-HOLE MODULE E48SH3R330_02162007 14
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PART NUMBERING SYSTEM E 48 S H 3R3 30 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 48-36V~75V S- Single H-50A series 3R3 - 3.3V 30 - 30A N- Negative R- 0.170” A- Standard functions F- RoHS 6/6 Brick P- Positive N- 0.145” H - With heatspreader (Lead Free) K- 0.110” M- SMD MODEL LIST MODEL NAME INPUT OUTPUT EFF @ 100% LOAD E48SH1R250NRFA 36V~75V 2.3A 1.2V 50A 86.5% E48SH1R540NRFA 3
