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Delphi Series E48SR, 66W Eighth Brick Family
DC/DC Power Modules: 48V in, 15V/4A out
The Delphi Series E48SR Eighth Brick, 48V input, single output, isolated
DC/DC converter is the latest offering from a world leader in power
systems technology and manufacturing — Delta Electronics, Inc. This
product family provides up to 66 watts of power or 25A of output current
(1.8V and below) in an industry standard footprint. With creative design
technology and optimization of component placement, these converters
possess outstanding electrical and thermal performances, as well as
extremely high reliability under highly stressful operating conditions. All
models are fully protected from abnormal input/output voltage, current,
and temperature conditions. The Delphi Series converters meet all safety
requirements with basic insulation.
DATASHEET
DS_E48SR15004_05222008
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
93/68/EEC directive
OPTIONS
Positive On/Off logic
Short pin lengths
SMD pin
APPLICATIONS
Telecom/Datacom
Wireless Networks
Optical Network Equipment
Server and Data Storage
Industrial/Testing Equipment
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Summary of Contents for Delta Electronics Delphi E48SR
- Page 1 Delphi Series E48SR, 66W Eighth Brick Family DC/DC Power Modules: 48V in, 15V/4A out The Delphi Series E48SR Eighth Brick, 48V input, single output, isolated DC/DC converter is the latest offering from a world leader in power systems technology and manufacturing — Delta Electronics, Inc. This product family provides up to 66 watts of power or 25A of output current (1.8V and below) in an industry standard footprint.
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Page 2: Technical Specifications
TECHNICAL SPECIFICATIONS =25°C, airflow rate=300 LFM, V =48Vdc, nominal Vout unless otherwise noted) PARAMETER ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous Transient (100ms) Operating Case Temperature Storage Temperature Input/Output Isolation Voltage INPUT CHARACTERISTICS Operating Input Voltage Input Under-Voltage Lockout Turn-On Voltage Threshold Turn-Off Voltage Threshold Lockout Hysteresis Voltage Maximum Input Current... - Page 3 ELECTRICAL CHARACTERISTICS CURVES Figure 1: Efficiency vs. load current for minimum, nominal, and maximum input voltage at 25°C Figure 3: Typical full load input characteristics at room temperature DS_E48SR15004_05222008 Figure 2: Power dissipation vs. load current for minimum, nominal, and maximum input voltage at 25°C.
- Page 4 ELECTRICAL CHARACTERISTICS CURVES For Negative Remote On/Off Logic Figure 4: Turn-on transient at full rated load current (resistor load) (2ms/div). Vin=48V. Top Trace: Vout, 5V/div; Bottom Trace: ON/OFF input, 5V/div For Positive Remote On/Off Logic Figure 6: Turn-on transient at full rated load current (resistor load) (2ms/div).
- Page 5 ELECTRICAL CHARACTERISTICS CURVES Figure 8: Output voltage response to step-change in load current (75%-50%-75% of Io, max; di/dt = 0.1A/µs). Load cap: 10µF tantalum capacitor and 1µF ceramic capacitor. Top Trace: Vout (0.2V/div,200us/div), Bottom Trace: Iout (1A/div). Scope measurement should be made using a BNC cable (length shorter than 20 inches).
- Page 6 ELECTRICAL CHARACTERISTICS CURVES Figure 11: Input Terminal Ripple Current, i current and nominal input voltage with 12µH source impedance and 33µF electrolytic capacitor (500 mA/div,2us/div) Copper Strip Vo(+) Vo(-) Figure 13: Output voltage noise and ripple measurement test setup DS_E48SR15004_05222008 , at full rated output Figure 12: Input reflected ripple current, i source inductor at nominal input voltage and rated load current...
- Page 7 ELECTRICAL CHARACTERISTICS CURVES Figure 14: Output voltage ripple at nominal input voltage and rated load current (Io=4A)(50 mV/div, 2us/div) 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) from the module.
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Page 8: Design Considerations
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 μH, we advise adding a 10 to 100 μF electrolytic capacitor (ESR <... -
Page 9: Features Descriptions
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 automatically shut down (hiccup mode). The modules will try to restart after shutdown. - Page 10 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.
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Page 11: Thermal Considerations
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 transfer. Hence, the choice of equipment to characterize the thermal performance of the power module is a wind tunnel. - Page 12 PICK AND PLACE LOCATION SURFACE-MOUNT TAPE & REEL RECOMMENDED PAD LAYOUT (SMD) DS_E48SR15004_05222008...
- Page 13 140~180°C 60~120 sec. Ramp-up temp. 0.5~3.0°C /sec. 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 ℃...
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Page 14: Mechanical Drawing
MECHANICAL DRAWING Surface-mount module Pin No. Name +Vin ON/OFF -Vin -Vout -SENSE TRIM +SENSE +Vout DS_E48SR15004_05222008 Through-hole module Function Positive input voltage Remote ON/OFF Negative input voltage Negative output voltage Negative remote sense Output voltage trim Positive remote sense Positive output voltage... -
Page 15: Part Numbering System
PART NUMBERING SYSTEM Type of Input Number of Product Product Voltage Outputs E- Eighth S- Single Feature Brick MODEL LIST MODEL NAME E48SR1R225NRFA 36V~75V E48SR1R525NRFA 36V~75V E48SR1R825NRFA 36V~75V E48SR2R520NRFA 36V~75V E48SR3R320NRFA 36V~75V E48SR05012NRFA 36V~75V E48SR12005NRFA 36V~75V E48SR12006NRFA 36V~75V E48SR12007NRFA 36V~75V E48SR15004NRFA 36V~75V Default remote on/off logic is negative and pin length is 0.170”...