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Delphi Series E24SR, 66W Eighth Brick Family
DC/DC Power Modules: 24V in, 5V/12A out
The Delphi Series E24SR Eighth Brick, 24V input, single output, isolated
DC/DC converters are the latest offering from a world leader in power
systems technology and manufacturing ― Delta Electronics, Inc. This
product family is available in either a through-hole or surface-mounted
package and provides up to 66 watts of power or 20A of output current
(3.3V and below) in an industry standard footprint and pinout. The
E24SR converter operates from an input voltage of 18V to 36V and is
available in output voltages from 3.3V to 12V. Efficiency for the 5V output
is 90.5% at 12A full load. With creative design technology and
optimization of component placement, these converters possess
outstanding electrical and thermal performance, 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_E24SR05012_01032008
FEATURES
High efficiency: 90.5% @ 5V/ 12A
Size: 58.4mm x 22.8mm x 10.0mm
(2.30" x 0.90" x 0.39")
SMD and Through-hole versions
Industry standard pin out
2:1 input range
Fixed frequency operation
Input UVLO, Output OTP, OCP, OVP
Basic insulation
2250V isolation
Monotonic startup into normal and
pre-biased loads
Output voltage trim ±10%
No minimum load required
ISO 9001, TL 9000, ISO 14001, QS 9000,
OHSAS 18001 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
SMD pin
Short pin lengths available
APPLICATIONS
Telecom / DataCom
Wireless Networks
Optical Network Equipment
Server and Data Storage
Industrial / Test Equipment
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Summary of Contents for Delta Electronics Delphi Series E24SR
- Page 1 Delphi Series E24SR, 66W Eighth Brick Family DC/DC Power Modules: 24V in, 5V/12A out The Delphi Series E24SR Eighth Brick, 24V input, single output, isolated DC/DC converters are the latest offering from a world leader in power systems technology and manufacturing ― Delta Electronics, Inc. This...
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Page 2: Technical Specifications
TECHNICAL SPECIFICATIONS =25°C, airflow rate=300 LFM, V =24Vdc, nominal Vout unless otherwise noted.) PARAMETER ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous Transient (100ms) 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 Maximum Input Current... - Page 3 ELECTRICAL CHARACTERISTICS CURVES 24Vin 36Vin Output Current (A) Figure 1: Efficiency vs. load current for minimum, nominal, and maximum input voltage at 25°C Input Voltage (V) Figure 3: Typical full load input characteristics at room temperature DS_E24SR05012_01032008 18Vin 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 (resistive load) (2 ms/div). Vin=24V. Top Trace: Vout, 2.0V/div; Bottom Trace: ON/OFF input, 10V/div For Positive Remote On/Off Logic Figure 6: Turn-on transient at full rated load current (resistive load) (2 ms/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 (100mV/div, 200us/div), Bottom Trace: Iout (5A/div). Scope measurement should be made using a BNC cable (length shorter than 20 inches).
- Page 6 ELECTRICAL CHARACTERISTICS CURVES Figure 12: Input reflected ripple current, i source inductor at nominal input voltage and rated load current (20 mA/div, 2us/div) Figure 14: Output voltage ripple at nominal input voltage and rated load current (Io=12A)(20 mV/div, 2us/div) Load capacitance: 1µF ceramic capacitor and 10µF tantalum capacitor.
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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 10 to 100 μF electrolytic capacitor (ESR <... -
Page 8: 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, and enter hiccup mode. The modules will try to restart after shutdown. - Page 9 FEATURES DESCRIPTIONS (CON.) Output Voltage Adjustment (TRIM) To increase or decrease the output voltage set point, connect 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 18: Circuit configuration for trim-down (decrease output voltage) If the external resistor is connected between the TRIM...
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Page 10: 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 11 PICK AND PLACE LOCATION SURFACE-MOUNT TAPE & REEL RECOMMENDED PAD LAYOUT (SMD) DS_E24SR05012_01032008...
- Page 12 LEADED (Sn/Pb) PROCESS RECOMMEND TEMP. PROFILE Pre-heat temp. 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 E24SR, measured on the pin +Vout joint. LEAD FREE (SAC) PROCESS RECOMMEND TEMP. PROFILE Temp Peak Temp.
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Page 13: Mechanical Drawing
MECHANICAL DRAWING Surface-mount module Pin No. Name Function -Vin ON/OFF +Vin +Vout +SENSE TRIM -SENSE -Vout DS_E24SR05012_01032008 Through-hole module Negative input voltage Remote ON/OFF Positive input voltage Positive output voltage Positive remote sense Output voltage trim Negative remote sense Negative output voltage... -
Page 14: Model List
PART NUMBERING SYSTEM Type of Input Number of Product Product Voltage Outputs Series E - Eighth S - Single R - Regular Brick MODEL LIST MODEL NAME E24SR3R320NRFA 18V~36V E24SR05012NRFA 18V~36V E24SR06508NRFA 18V~36V E24SR12005NRFA 18V~36V Default remote on/off logic is negative and pin length is 0.170” For different remote on/off logic and pin length, please refer to part numbering system above or contact your local sales office. - Page 15 at any time, without notice DS_E24SR05012_01032008...
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