FEATURES  High Efficiency: 91.5% @ 5.0V/12A  Size: 58.4mmx22.80mmx8.4mm (2.30”x0.90”x0.33”)  Standard footprint  Industry standard pin out  Fixed frequency operation: 350KHz  Input UVLO, Output OCP, OVP, OTP  1500V isolation  Basic insulation  No minimum load required  2:1 Input voltage range  ISO 9001, TL 9000, ISO 14001, QS 9000, OHSAS 18001 certified manufacturing facility  UL/cUL 60950-1 (US & Canada) recognized Delphi Series E48SR, 66W Eighth Brick Family DC/DC Power Modules: 48V in, 5.0V/12A out The Delphi Series E48SR Eighth Brick, 48V input, single output, OPTIONS isolated DC/DC converter is the latest offering from a world leader in  SMT or through-hole versions power systems technology and manufacturing – Delta Electronics, Inc.  Positive on/off logic This product family provides up to 66 watts of power or 25A of output  Short pin lengths 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. APPLICATIONS  Telecom/Datacom  Wireless Networks  Optical Network Equipment  Server and Data Storage  Industrial/Testing Equipment DATASHEET DS_E48SR05012_10182013

TECHNICAL SPECIFICATIONS (T =25°C, airflow rate=300 LFM, V =48Vdc, nominal Vout unless otherwise noted.) A in PARAMETER NOTES and CONDITIONS E48SR05012 (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 -40 121 °C Storage Temperature -55 125 °C Input/Output Isolation Voltage 1500 Vdc INPUT CHARACTERISTICS Operating Input Voltage 36 75 Vdc Input Under-Voltage Lockout Turn-On Voltage Threshold 33 34 35 Vdc Turn-Off Voltage Threshold 31 32 33 Vdc Lockout Hysteresis Voltage 1.5 2 2.5 Vdc Input Over-Voltage Lockout Turn-Off Voltage Threshold 100 105 107 Vdc Turn-On Voltage Threshold 97 102 104 Vdc Maximum Input Current 100% Load, 36Vin 1.83 A No-Load Input Current 40 mA Off Converter Input Current 4 mA Inrush Current(I2t) 1 A2s Input Reflected-Ripple Current P-P thru 12µH inductor, 5Hz to 20MHz 20 mA Input Voltage Ripple Rejection 120 Hz dB OUTPUT CHARACTERISTICS Output Voltage Set Point Vin=48V, Io=Io.max, Tc=25°C 4.925 5.0 5.075 Vdc Output Voltage Regulation Over Load Io=Io,min to Io,max ±3 ±10 mV Over Line Vin=36V to 75V ±3 ±10 mV Over Temperature Tc=-40°C to 85°C ±15 mV Total Output Voltage Range over sample load, line and temperature 4.9 5.1 V Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth Peak-to-Peak Full Load, 1µF ceramic, 10µF tantalum 60 90 mV RMS Full Load, 1µF ceramic, 10µF tantalum 15 30 mV Operating Output Current Range 0 12 A Output DC Current-Limit Inception Output Voltage 10% Low 110 150 % DYNAMIC CHARACTERISTICS Output Voltage Current Transient 48V, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs Positive Step Change in Output Current 50% Io.max to 75% Io.max 170 mV Negative Step Change in Output Current 75% Io.max to 50% Io.max 170 mV Settling Time (within 1% Vout nominal) 200 us Turn-On Transient Start-Up Time, From On/Off Control 7 ms Start-Up Time, From Input 7 ms Maximum Output Capacitance Full load; 5% overshoot of Vout at startup 5000 µF EFFICIENCY 100% Load 91.5 % 60% Load 91 % ISOLATION CHARACTERISTICS Input to Output 1500 Vdc Isolation Resistance 10 MΩ Isolation Capacitance 1500 pF FEATURE CHARACTERISTICS Switching Frequency 350 kHz ON/OFF Control, Negative Remote On/Off logic Logic Low (Module On) Von/off at Ion/off=1.0mA 0.7 V Logic High (Module Off) Von/off at Ion/off=0.0 µA 2 18 V ON/OFF Control, Positive Remote On/Off logic Logic Low (Module Off) Von/off at Ion/off=1.0mA 0.7 V Logic High (Module On) Von/off at Ion/off=0.0 µA 2 18 V ON/OFF Current (for both remote on/off logic) Ion/off at Von/off=0.0V 1 mA Leakage Current (for both remote on/off logic) Logic High, Von/off=15V 50 uA Output Voltage Trim Range Across Pins 9 & 5, Pout ≦ max rated power -10% 10% % Output Voltage Remote Sense Range Pout ≦ max rated power 10 % Output Over-Voltage Protection Over full temp range; % of nominal Vout 6 V GENERAL SPECIFICATIONS MTBF Io=80% of Io, max; 300LFM @25C 3.06 M hours Weight 19.6 grams Over-Temperature Shutdown Refer to Figure 21 for measuring point 125 °C DS_E48SR05012_10182013 2

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_E48SR05012_10182013 3

ELECTRICAL CHARACTERISTICS CURVES For Negative Remote On/Off Logic 0 0 0 0 Figure 4: Turn-on transient at full rated load current (resistive Figure 5: Turn-on transient at zero load current (2 ms/div). load) (2 ms/div). Vin=48V.Top Trace: Vout, 2V/div; Bottom Vin=48V.Top Trace: Vout, 2V/div; Bottom Trace: ON/OFF input, Trace: ON/OFF input, 5V/div 5V/div For Positive Remote On/Off Logic 0 0 0 0 Figure 6: Turn-on transient at full rated load current (resistive Figure 7: Turn-on transient at zero load current (2 ms/div). load) (2 ms/div). Vin=48V.Top Trace: Vout, 2V/div; Bottom Vin=48V.Top Trace: Vout, 2V/div, Bottom Trace: ON/OFF input, Trace: ON/OFF input, 5V/div 5V/div DS_E48SR05012_10182013 4

ELECTRICAL CHARACTERISTICS CURVES 00 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%-75% of Io, max; di/dt = 0.1A/µs). Load cap: current (75%-50%-75% of Io, max; di/dt = 2.5A/µs). Load cap: 10µF, tantalum capacitor and 1µF ceramic capacitor. Top Trace: 330µF, 35m ESR solid electrolytic capacitor and 1µF ceramic Vout (100mV/div, 200us/div), Bottom Trace: I out (5A/div). capacitor. Top Trace: Vout (100mV/div, 200us/div), Bottom Scope measurement should be made using a BNC cable Trace: I out (5A/div). Scope measurement should be made (length shorter than 20 inches). Position the load between 51 using a BNC cable (length shorter than 20 inches). Position the mm to 76 mm (2 inches to 3 inches) from the module.. load between 51 mm to 76 mm (2 inches to 3 inches) from the module. Figure 10: Test set-up diagram showing measurement points for Input Terminal Ripple Current and Input Reflected Ripple Current. Note: Measured input reflected-ripple current with a simulated source Inductance (L ) of 12 μH. Capacitor Cs offset TEST possible battery impedance. Measure current as shown above DS_E48SR05012_10182013 5

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 (500 mA/div, 2us/div). (20 mA/div, 2us/div). Copper Strip Vo(+) SCOPE RESISTIVE 10u 1u LOAD Vo(-) Figure 13: Output voltage noise and ripple measurement test setup DS_E48SR05012_10182013 6

ELECTRICAL CHARACTERISTICS CURVES 0 Figure 14: Output voltage ripple at nominal input voltage and Figure 15: Output voltage vs. load current showing typical rated load current (Io=12A)(20 mV/div, 2us/div) current limit curves and converter shutdown points. Load capacitance: 1µF ceramic capacitor and 10µF tantalum capacitor. Bandwidth: 20 MHz. Scope measurements 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. DS_E48SR05012_10182013 7

DESIGN CONSIDERATIONS Input Source Impedance  The input source must be insulated from the ac 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, we advise adding a 10 to 100 μF electrolytic one Vo pin shall also be grounded. capacitor (ESR < 0.7 Ω at 100 kHz) mounted close to the input of the module to improve the stability.  A SELV reliability test is conducted on the system where the module is used, in combination with the Layout and EMC Considerations module, to ensure that under a single fault, hazardous voltage does not appear at the module’s Delta’s DC/DC power modules are designed to operate output. in a wide variety of systems and applications. For design assistance with EMC compliance and related PWB When installed into a Class II equipment (without layout issues, please contact Delta’s technical support grounding), spacing consideration should be given to team. An external input filter module is available for the end-use installation, as the spacing between the easier EMC compliance design. Application notes to module and mounting surface have not been evaluated. assist designers in addressing these issues are pending release. The power module has extra-low voltage (ELV) outputs when all inputs are ELV. Safety Considerations This power module is not internally fused. To achieve The power module must be installed in compliance with optimum safety and system protection, an input line fuse the spacing and separation requirements of the is highly recommended. The safety agencies require a end-user’s safety agency standard, i.e., UL60950, normal-blow fuse with 5A maximum rating to be CAN/CSA-C22.2 No. 60950-00 and EN60950: 2000 and installed in the ungrounded lead. A lower rated fuse can IEC60950-1999, if the system in which the power module be used based on the maximum inrush transient energy is to be used must meet safety agency requirements. and maximum input current. Basic insulation based on 75 Vdc input is provided Soldering and Cleaning Considerations between the input and output of the module for the purpose of applying insulation requirements when the Post solder cleaning is usually the final board assembly input to this DC-to-DC converter is identified as TNV-2 or process before the board or system undergoes electrical SELV. An additional evaluation is needed if the source testing. Inadequate cleaning and/or drying may lower the is other than TNV-2 or SELV. reliability of a power module and severely affect the finished circuit board assembly test. Adequate cleaning When the input source is SELV circuit, the power module meets SELV (safety extra-low voltage) requirements. If and/or drying is especially important for un-encapsulated the input source is a hazardous voltage which is greater and/or open frame type power modules. For assistance than 60 Vdc and less than or equal to 75 Vdc, for the on appropriate soldering and cleaning procedures, module’s output to meet SELV requirements, all of the please contact Delta’s technical support team. following must be met: DS_E48SR05012_10182013 8

FEATURES DESCRIPTIONS Vi(+) Vo(+) Over-Current Protection Sense(+) The modules include an internal output over-current protection circuit, which will endure current limiting for ON/OFF an unlimited duration during output overload. If the Sense(-) output current exceeds the OCP set point, the modules will automatically shut down (hiccup mode). Vi(-) Vo(-) The modules will try to restart after shutdown. If the overload condition still exists, the module will shut down Figure 16: Remote on/off implementation again. This restart trial will continue until the overload condition is corrected. Remote Sense Over-Voltage Protection Remote sense compensates for voltage drops on the output by sensing the actual output voltage at the point The modules include an internal output over-voltage of load. The voltage between the remote sense pins protection circuit, which monitors the voltage on the and the output terminals must not exceed the output output terminals. If this voltage exceeds the over-voltage voltage sense range given here: set point, the module will shut down and latch off. The over-voltage latch is reset by either cycling the input [Vo(+) – Vo(–)] – [SENSE(+) – SENSE(–)] ≤ 10% × Vout power or by toggling the on/off signal for one second. This limit includes any increase in voltage due to Over-Temperature Protection remote sense compensation and output voltage set point adjustment (trim). The over-temperature protection consists of circuitry that provides protection from thermal damage. If the temperature exceeds the over-temperature threshold the module will shut down. Vi(+) Vo(+) Sense(+) The module will try to restart after shutdown. If the over-temperature condition still exists during restart, the module will shut down again. This restart trial will Sense(-) continue until the temperature is within specification. Vi(-) Vo(-) Remote On/Off Contact Contact and Distribution Resistance Losses The remote on/off feature on the module can be either Figure 17: Effective circuit configuration for remote sense negative or positive logic. Negative logic turns the operation module on during a logic low and off during a logic high. Positive logic turns the modules on during a logic high If the remote sense feature is not used to regulate the and off during a logic low. output at the point of load, please connect SENSE(+) to Vo(+) and SENSE(–) to Vo(–) at the module. Remote on/off can be controlled by an external switch between the on/off terminal and the Vi(-) terminal. The The output voltage can be increased by both the switch can be an open collector or open drain. remote sense and the trim; however, the maximum increase is the larger of either the remote sense or the For negative logic if the remote on/off feature is not trim, not the sum of both. used, please short the on/off pin to Vi(-). For positive logic if the remote on/off feature is not used, please When using remote sense and trim, the output voltage leave the on/off pin to floating. of the module is usually increased, which increases the power output of the module with the same output current. Care should be taken to ensure that the maximum output power does not exceed the maximum rated power. DS_E48SR05012_10182013 9

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. Figure 19: Circuit configuration for trim-up (increase output voltage) If the external resistor is connected between the TRIM and SENSE (+) the output voltage set point increases (Fig. 19). The external resistor value required to obtain a percentage output voltage change △% is defined as: Figure 18: Circuit configuration for trim-down (decrease output voltage) Rtrim up  5.11Vo (100 )  51110.2K If the external resistor is connected between the TRIM 1.225  and SENSE (-) pins, the output voltage set point decreases (Fig. 18). The external resistor value Ex. When Trim-up +10%(5V×1.1=5.5V) required to obtain a percentage of output voltage change △% is defined as: 5.115 (10010 ) 511 Rtrimup  10.2168K 1.22510 10 Rtrimdown51110.2K  The output voltage can be increased by both the remote sense and the trim, however the maximum increase is Ex. When Trim-down -10%(5V×0.9=4.5V) the larger of either the remote sense or the trim, not the sum of both. Rtrimdown 51110.240.9K 10 When using remote sense and trim, the output voltage of the module is usually increased, which increases the power output of the module with the same output current. Care should be taken to ensure that the maximum output power of the module remains at or below the maximum rated power. DS_E48SR05012_10182013 10

THERMAL CONSIDERATIONS Thermal Derating Thermal management is an important part of the system design. To ensure proper, reliable operation, sufficient Heat can be removed by increasing airflow over the module. cooling of the power module is needed over the entire The hottest point temperature of the module is +121°C. To temperature range of the module. Convection cooling is enhance system reliability; the power module should always usually the dominant mode of heat transfer. be operated below the maximum operating temperature. If the temperature exceeds the maximum module temperature, Hence, the choice of equipment to characterize the reliability of the unit may be affected. thermal performance of the power module is a wind tunnel. THERMAL CURVES Thermal Testing Setup Delta’s DC/DC power modules are characterized in heated vertical wind tunnels that simulate the thermal environments encountered in most electronics equipment. This type of equipment commonly uses vertically mounted circuit cards in cabinet racks in which the power modules are mounted. The following figure shows the wind tunnel characterization setup. The power module is mounted on a test PWB and is vertically positioned within the Figure 21: Hot spot temperature measured point. ＊The allowed maximum hot spot temperature is defined at 121℃ wind tunnel. The space between the neighboring PWB and the top of the power module is constantly kept at 6.35mm (0.25’’). E48SR05012(Standard) Output Load vs. Ambient Temperature and Air Velocity Output Current(A) @ Vin = 48V (Transverse Orientation) 14 12 FACING PWB PWB MODULE 10 Natural Convection 8 100LFM 200LFM 6 AIR VELOCITY AND AMBIENT 4 TEMPERATURE MEASURED BELOW 2 THE MODULE 50.8 (2.0”) AIR FLOW 0 55 60 65 70 75 80 85 Ambient Temperature (℃) F igure 22: Output load vs. ambient temperature and air velocity @ V =48V(Transverse Orientation) in 12.7 (0.5”) Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches) Figure 20: Wind tunnel test setup DS_E48SR05012_10182013 11

PICK AND PLACE LOCATION SURFACE-MOUNT TAPE & REEL RECOMMENDED PAD LAYOUT (SMD) DS_E48SR05012_10182013 12

LEADED (Sn/Pb) PROCESS RECOMMEND TEMP. PROFILE 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 ℃ 217℃ Ramp down max. 4℃/sec. 200℃ 150℃ Preheat time 100~140 sec. Time Limited 90 sec. above 217℃ Ramp up max. 3℃/sec. 25℃ Time Note: The temperature refers to the pin of E48SR, measured on the pin +Vout joint. DS_E48SR05012_10182013 13

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 DS_E48SR05012_10182013 14

PART NUMBERING SYSTEM E 48 S R 050 12 N R F A Type of Input Number of Product Output Output ON/OFF Pin Option Code Product Voltage Outputs Series Voltage Current Logic Length/Type E- Eighth 48V S- Single R- Regular 050- 5.0V 12-12A N- Negative R - 0.170” F- RoHS 6/6 A- Standard Functions Brick (Default) (Default) (Lead Free) P- Positive N- 0.145” K- 0.110” M- SMD MODEL LIST MODEL NAME INPUT OUTPUT EFF @ 100% LOAD E48SR1R225NRFA 36V~75V 1.3A 1.2V 25A 88.0% E48SR1R525NRFA 36V~75V 1.5A 1.5V 25A 89.5% E48SR1R825NRFA 36V~75V 1.8A 1.8V 25A 90.5% E48SR2R520NRFA 36V~75V 1.9A 2.5V 20A 89.0% E48SR3R320NRFA 36V~75V 2.5A 3.3V 20A 90.5% E48SR05012NRFA 36V~75V 2.1A 5.0V 12A 91.5% E48SR12005NRFA 36V~75V 2.2A 12V 5A 92.0% E48SR12007NRFA 36V~75V 3.0A 12V 7A 93.0% E48SR15004NRFA 36V~75V 2.2A 15V 4A 91.5% 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. CONTACT: www.deltaww.com/dcdc USA: Europe: Asia & the rest of world: Telephone: Telephone: +31-20-655-0967 Telephone: +886 3 4526107 x 6220~6224 East Coast: 978-656-3993 Fax: +31-20-655-0999 Fax: +886 3 4513485 West Coast: 510-668-5100 Email: DCDC@delta-es.com Email: DCDC@delta.com.tw Fax: (978) 656 3964 Email: DCDC@delta-corp.com WARRANTY Delta offers a two (2) year limited warranty. Complete warranty information is listed on our web site or is available upon request from Delta. Information furnished by Delta is believed to be accurate and reliable. However, no responsibility is assumed by Delta for its use, nor for any infringements of patents or other rights of third parties, which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Delta. Delta reserves the right to revise these specifications at any time, without notice. DS_E48SR05012_10182013 15

Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: D elta Electronics: E48SR05012NRFA E48SR05012NMFA