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Delphi Series E48SB, 240W Eighth Brick Bus Converter
DC/DC Power Modules: 48Vin, 12V/20A out
Delta Electronics, Inc., a world leader in power systems technology and
manufacturing, has introduced the E48SB, eighth brick sized 240W
bus converter, into their Delphi Series of board mounted DC/DC power
converters to support the intermediate bus architecture to power multiple
downstream non-isolated point-of-load (POL) converters. The E48SB
product family features an input voltage of 38V to 55V, and provides up to
240W (9.6V and above) of power in an industry standard eighth brick
footprint. Typical efficiency of 12V module is 96.3%. With optimized
component placement, creative design topology, and numerous patented
technologies, the E48SB bus converters deliver outstanding electrical
and thermal performance. An optional heatsink is available for harsh
thermal requirements.
DATASHEET
DS_E48SB12020_05222008
FEATURES
Input voltage range: 38V~55V
Output 240W @ 44Vin and above
Output 22.3A @ 44Vin and below
High efficiency: 96.3% @ 12V/20A
Size: 58.4mm x 22.8mm x 11.4mm
(2.28" x 0.90" x 0.45")
Industry standard pinout
Fully protected: Input UVLO, OVP, Output
OCP and OTP
Parallelable for higher output power
2250V isolation
Basic insulation
Monotonic startup
No minimum load required
ISO 9001, TL 9000, ISO 14001, QS9000,
OHSAS18001 certified manufacturing facility
UL/cUL 60950 (US & Canada) Recognized,
and TUV (EN60950) Certified
CE mark meets 73/23/EEC and 93/68/EEC
directives
OPTIONS
Positive On/Off logic
Short pin lengths
Heatsink available for extended
operation
OTP and OCP mode (Auto restart or
latch)
APPLICATIONS
Datacom / Netowrking
Wireless Networks
Optical Network Equipment
Server and Data Storage
Industrial / Testing Equipment
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Related Manuals for Delta Electronics Series 240W
Summary of Contents for Delta Electronics Series 240W
- Page 1 Delphi Series E48SB, 240W Eighth Brick Bus Converter DC/DC Power Modules: 48Vin, 12V/20A out Delta Electronics, Inc., a world leader in power systems technology and manufacturing, has introduced the E48SB, eighth brick sized 240W bus converter, into their Delphi Series of board mounted DC/DC power converters to support the intermediate bus architecture to power multiple downstream non-isolated point-of-load (POL) converters.
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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 Operating 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 Input Over-Voltage Lockout Turn-Off Voltage Threshold... - Page 3 ELECTRICAL CHARACTERISTICS CURVES Output Current (A) Figure 1: Efficiency vs. load current for minimum, nominal, and maximum input voltage at 25°C 38Vin 48Vin 55Vin Output Current (A) Figure 3: Output voltage regulation vs load current showing typical current limit curves and converter shutdown points for minimum, nominal, and maximum input voltage at room temperature.
- Page 4 ELECTRICAL CHARACTERISTICS CURVES For Negative Remote On/Off Logic Figure 5: Turn-on transient at full rated load current (5 ms/div). Top Trace: Vout; 5V/div; Bottom Trace: ON/OFF input: 2V/div For Positive Remote On/Off Logic Figure 7: Turn-on transient at full rated load current (5 ms/div).
- Page 5 ELECTRICAL CHARACTERISTICS CURVES Figure 9: Output voltage response to step-change in load current (50%-75%-50% of Io, max; di/dt = 0.1A/µs). Load cap: 10µF, tantalum capacitor and 1µF ceramic capacitor. Top Trace: Vout (200mV/div, 200us/div), Bottom Trace: Iout (10A/div). Scope measurement should be made using a BNC cable (length shorter than 20 inches).
- Page 6 ELECTRICAL CHARACTERISTICS CURVES Figure 12: Input Terminal Ripple Current, i current and nominal input voltage with 12µH source impedance and 47µF electrolytic capacitor (100 mA/div, 2us/div). Copper Strip Vo(+) Vo(-) Figure 14: Output voltage noise and ripple measurement test setup. DS_E48SB12020_05222008 , at full rated output Figure 13: Input reflected ripple current, i...
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Page 7: 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 33 to 220μF electrolytic capacitor (ESR <... - Page 8 Over-Temperature Protection The over-temperature protection consists of circuitry that provides protection from thermal damage. If the temperature exceeds the over-temperature threshold, the module will be shut down, and enter in the auto-restart mode or latch mode, which is optional. For auto-restart mode, the module will monitor the module temperature after...
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Page 9: 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 10: Mechanical Drawing
MECHANICAL DRAWING Pin No. Name +Vin ON/OFF -Vin -Vout +Vout Pin Specification: Pins 1-3 1.0mm (0.040”) diameter Pins 4-5 1.5mm (0.060”) diameter All pins are copper with Tin plating (Pb free) DS_E48SB12020_05222008 Function Positive input voltage Remote ON/OFF Negative input voltage Negative output voltage Positive output voltage... -
Page 11: Part Numbering System
PART NUMBERING SYSTEM Type of Input Number of Product Product Voltage Outputs E- Eighth S- Single B- Bus Brick 38V~55V Converter MODEL LIST MODEL NAME INPUT E48SB9R625NRFA 38V~55V E48SB12020NRFA 38V~55V Note: Default remote on/off logic is negative; Default Pin length is 0.170”; Default OTP and output OVP, OCP mode is auto-restart.