FEATURES High efficiency: 91.7% @ 12V/10A Size: 58.4mmx22.8mmx8.4mm (2.30”x0.90”x0.33”) (Without heat-spreader) 58.4mmx22.8mmx12.7mm (2.30”x0.90”x0.50”) (With heat-spreader) Standard footprint Industry standard pin out Fixed frequency operation Input UVLO, Output OCP, OVP, OTP 2250V isolation Basic insulation No minimum load required ISO 9001, TL 9000, ISO 14001, QS 9000, OHSAS 18001 certified manufacturing facility Delphi Series E48SC12010, Eighth Brick Family DC/DC Power Modules: 48V in, 12V/10A out The Delphi Series E48SC12010, Eighth Brick, 48V input, single output, isolated DC/DC converter is the latest offering from a world leader in UL/CUL 60950-1 (US & Canada) pending OPTIONS Negative/Positive on/off logic SMT or through-hole version power systems technology and manufacturing -- Delta Electronics, Inc. This product family provides up to 120 watts, improved and very cost effective power solution of industry standard footprint and pinout. 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_ E48SC12010_01292015 APPLICATIONS Telecom / Datacom Wireless Networks Optical Network Equipment Server and Data Storage Industrial / Testing Equipment LUO LUOTECHNICAL SPECIFICATIONS (TA=25°C, airflow rate=300 LFM, Vin=48Vdc, nominal Vout unless otherwise noted.) PARAMETER NOTES and CONDITIONS E48SC12010 (Standard) Min. ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous Transient Operating Ambient 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 No-Load Input Current Off Converter Input Current 2 Inrush Current(I t) Input Reflected-Ripple Current Input Voltage Ripple Rejection OUTPUT CHARACTERISTICS Output Voltage Set Point Output Voltage Regulation Over Load Over Line Over Temperature Total Output Voltage Range Output Voltage Ripple and Noise Peak-to-Peak RMS Operating Output Current Range Output DC Current-Limit Inception DYNAMIC CHARACTERISTICS Output Voltage Current Transient Positive Step Change in Output Current Negative Step Change in Output Current Settling Time (within 1% Vout nominal) Turn-On Transient Start-Up Time, From On/Off Control Start-Up Time, From Input Maximum Output Capacitance EFFICIENCY 100% Load 60% Load ISOLATION CHARACTERISTICS Input to Output Isolation Resistance Isolation Capacitance FEATURE CHARACTERISTICS Switching Frequency ON/OFF Control, Negative Remote On/Off logic Logic Low (Module On) Logic High (Module Off) ON/OFF Control, Positive Remote On/Off logic Logic Low (Module Off) Logic High (Module On) ON/OFF Current (for both remote on/off logic) Leakage Current (for both remote on/off logic) Output Voltage Trim Range Output Voltage Remote Sense Range Output Over-Voltage Protection GENERAL SPECIFICATIONS MTBF Weight Weight Over-Temperature Shutdown (Without heat spreader) Over-Temperature Shutdown (With heat spreader) DS_E48SC12010_01292015 Typ. 100ms -40 -55 36 33 31 1 34 32 2 100% Load, 36Vin Max. Units 80 100 85 125 2250 Vdc Vdc °C °C Vdc 75 Vdc 35 33 3 4.3 Vdc Vdc Vdc A mA mA 2 As mA dB 80 10 1 P-P thru 12µH inductor, 5Hz to 20MHz 120 Hz Vin=48V, Io=Io.max, Tc=25°C Io=Io,min to Io,max Vin= 36V to 75V Tc= -40°C to 85°C Over sample load, line and temperature 5Hz to 20MHz bandwidth Full Load, 1µF ceramic, 10µF tantalum Full Load, 1µF ceramic, 10µF tantalum Output Voltage 10% Low 20 60 11.88 12.00 12.12 Vdc ±3 ±3 ±15 ±15 ±100 12.25 mV mV mV V 40 15 120 25 10 140 mV mV A % 11.76 0 110 48V, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs 25% Io.max to 50% Io.max 50% Io.max to 25% Io.max 200 200 200 40 40 Full load; 5% overshoot of Vout at startup 48Vin 48Vin mV mV µs 80 80 2000 91.7 91.9 % % 2250 Vdc MΩ pF 400 kHz -0.7 3.5 0.8 12 V V -0.7 3.5 0.8 12 1 50 10% 10 16.8 V V mA µA % % V 10 1000 350 Von/off at Ion/off=1.0mA Von/off at Ion/off=0.0 µA Von/off at Ion/off=1.0mA Von/off at Ion/off=0.0 µA Ion/off at Von/off=0.0V Logic High, Von/off=12V Pout ≦ max rated power Pout ≦ max rated power Over full temperature range Io=80% of Io, max; 300LFM @25C Without heat-spreader With heat-spreader Refer to Figure 19 for Hot spot 1 location (48Vin,80% Io, 200LFM,Airflow from Vin+ to Vin-) Refer to Figure 21 for Hot spot 2 location (48Vin,80% Io, 200LFM,Airflow from Vin+ to Vin-) ms ms µF -10% 13.8 15.0 2.2 21.4 33.5 M hours grams grams 127 °C 118 °C 2 ELECTRICAL CHARACTERISTICS CURVES efficiency curve 13 12 93.00% 10 36V 48V 75V 89.00% 87.00% LOSS(W) EFFICIENCY(%) 11 91.00% 9 8 7 36V 48V 75V 6 85.00% 5 83.00% 2 3 4 5 6 7 8 9 4 10 2 3 4 OUTPUT CURRENT(A 5 6 7 OUTPUT CURRENT(A) Figure 1: Efficiency vs. load current for 10A, minimum, nominal, and maximum input voltage at 25°C Figure 2: Power dissipation vs. load current for 10A, minimum, nominal, and maximum input voltage at 25°C. 8 9 10 b 4.5 4.0 input current (A) 3.5 3.0 2.5 2.0 1.5 1.0 30 35 40 45 50 55 60 65 70 75 INPUT VOLTAGE(V) Figure 3: Typical full load input characteristics at room temperature DS_E48SC12010_01292015 3 ELECTRICAL CHARACTERISTICS CURVES For Negative Remote On/Off Logic Figure 4: Turn-on transient at full rated load current (CC Mode load) (10ms/div). Vin=48V.Top Trace: Vout, 5V/div; Bottom Trace: ON/OFF input, 5V/div DS_E48SC12010_01292015 Figure 5: Turn-on transient at zero load current (10ms/div). Vin=48V.Top Trace: Vout, 5V/div; Bottom Trace: ON/OFF input, 5V/div 4 ELECTRICAL CHARACTERISTICS CURVES Figure 6: Output voltage response to step-change in load current (50%-25%-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: I out (2A/div). 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 Figure 7: Output voltage response to step-change in load current (50%-25%-50% of Io, max; di/dt = 2.5A/µs). Load cap: 10µF, tantalum capacitor and 1µF ceramic capacitor. Top Trace: Vout (200mV/div, 200us/div), Bottom Trace: I out (2A/div). 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 Figure 8: 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 (LTEST) of 12μH. Capacitor Cs offset possible battery impedance. Measure current as shown above DS_E48SC12010_01292015 5 ELECTRICAL CHARACTERISTICS CURVES Figure 9: Input Terminal Ripple Current, ic, at full rated output current and nominal input voltage with 12µH source impedance and 33µF electrolytic capacitor (100mA/div,1us/div) Figure 10: Input reflected ripple current, is, through a 12µH source inductor at nominal input voltage and rated load current (20mA/div,1us/div) Copper Strip Vo(+) 10u 1u SCOPE RESISTIVE LOAD Vo(-) Figure 11: Output voltage noise and ripple measurement test setup DS_E48SC12010_01292015 6 ELECTRICAL CHARACTERISTICS CURVES 13.0 12.0 OUTPUT VOLTAGE(V) 11.0 10.0 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 0.0 1 Figure 12: Output voltage ripple at nominal input voltage and rated load current (Io=10A)(20mV/div,1us/div) 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_E48SC12010_01292015 2 3 4 5 6 7 8 9 10 11 12 13 14 OUTPUT CURRENT(A) Figure 13: Output voltage vs. load current showing typical current limit curves and converter shutdown points 7 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 < 0.7 Ω at 100 kHz) mounted close to the input of the module to improve the stability. Layout and EMC Considerations Delta’s DC/DC power modules are designed to operate in a wide variety of systems and applications. For design assistance with EMC compliance and related PWB layout issues, please contact Delta’s technical support team. An external input filter module is available for easier EMC compliance design. Application notes to assist designers in addressing these issues are pending release. Schematic and components list Cin is 100uF low ESR Aluminum cap; Cx is 2.2uF ceramic cap; CY1,CY2 are 22nF ceramic caps; L1 is common-mode inductor,L1=1.32mH; end-user’s safety agency standard, i.e., UL60950-1, CSA C22.2 NO. 60950-1 2nd and IEC 60950-1 2nd : 2005 and EN 60950-1 2nd: 2006+A11+A1: 2010, if the system in which the power module is to be used must meet safety agency requirements. Basic insulation based on 75 Vdc input is provided between the input and output of the module for the purpose of applying insulation requirements when the input to this DC-to-DC converter is identified as TNV-2 or SELV. An additional evaluation is needed if the source is other than TNV-2 or SELV. When the input source is SELV circuit, the power module meets SELV (safety extra-low voltage) requirements. If the input source is a hazardous voltage which is greater than 60 Vdc and less than or equal to 75 Vdc, for the module’s output to meet SELV requirements, all of the following must be met: The input source must be insulated from the ac mains by reinforced or double insulation. The input terminals of the module are not operator accessible. A SELV reliability test is conducted on the system where the module is used, in combination with the module, to ensure that under a single fault, hazardous voltage does not appear at the module’s output. When installed into a Class II equipment (without grounding), spacing consideration should be given to the end-use installation, as the spacing between the module and mounting surface have not been evaluated. Test result: Vin=48V, Io=10A, The power module has extra-low voltage (ELV) outputs when all inputs are ELV. dBμV 80.0 Limits 55022MQP 55022MAV 70.0 60.0 50.0 40.0 Transducer LISNPUL Traces PK+ AV 30.0 This power module is not internally fused. To achieve optimum safety and system protection, an input line fuse is highly recommended. The safety agencies require a fuse with 12A maximum rating to be installed in the ungrounded lead. A lower rated fuse can be used based on the maximum inrush transient energy and maximum input current. Soldering and Cleaning Considerations 20.0 10.0 0.0 150 kHz 1 MHz 10 MHz 30 MHz Green line is quasi peak mode, blue line is average mode. Safety Considerations The power module must be installed in compliance with the spacing and separation requirements of the DS_E48SC12010_01292015 Post solder cleaning is usually the final board assembly process before the board or system undergoes electrical testing. Inadequate cleaning and/or drying may lower the reliability of a power module and severely affect the finished circuit board assembly test. Adequate cleaning and/or drying is especially important for un-encapsulated and/or open frame type power modules. For assistance on appropriate soldering and cleaning procedures, please contact Delta’s technical support team. 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 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. If the overload condition still exists, the module will shut down again. This restart trial will continue until the overload condition is corrected. Over-Voltage Protection The modules include an internal output over-voltage protection circuit, which monitors the voltage on the output terminals. If this voltage exceeds the over-voltage set point, the module will shut down (hiccup mode)。 The modules will try to restart after shutdown. If the over voltage condition still exists, the module will shut down again. This restart trial will continue until the over voltage condition is corrected. Over-Temperature Protection ON/OFF Sense(-) Vi(-) Vo(-) Figure 14: Remote on/off implementation Remote Sense Remote sense compensates for voltage drops on the output by sensing the actual output voltage at the point of load. The voltage between the remote sense pins and the output terminals must not exceed the output voltage sense range given here: [Vo(+) – Vo(–)] – [SENSE(+) – SENSE(–)] ≤ 10% × Vout This limit includes any increase in voltage due to 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. The module will restart if the temperature is within specification. Vi(+) Vo(+) Sense(+) Remote On/Off Sense(-) Vi(-) Vo(-) The remote on/off feature on the module can be either negative or positive logic. Negative logic turns the module on during a logic low and off during a logic high. Positive logic turns the modules on during a logic high and off during a logic low. Figure 15: Effective circuit configuration for remote sense operation Remote on/off can be controlled by an external switch between the on/off terminal and the Vi(-) terminal. The switch can be an open collector or open drain. If the remote sense feature is not used to regulate the output at the point of load, please connect SENSE(+) to Vo(+) and SENSE(–) to Vo(–) at the module. For negative logic if the remote on/off feature is not used, please short the on/off pin to Vi(-). For positive logic if the remote on/off feature is not used, please leave the on/off pin to floating. The output voltage can be increased by both the remote sense and the trim; however, the maximum increase is the larger of either the remote sense or the trim, not the sum of both. Contact Resistance Contact and Distribution Losses 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 does not exceed the maximum rated power. DS_E48SC12010_01292015 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 17: Circuit configuration for trim-up (increase output voltage) Figure 16: Circuit configuration for trim-down (decrease output voltage) If the external resistor is connected between the TRIM and SENSE (-) pins, the output voltage set point decreases (Fig. 16). The external resistor value required to obtain a percentage of output voltage change △% is defined as: Rtrim down Rtrim up 5.11Vo (100 ) 511 10.2K 1.225 Ex. When Trim-up +10%(12V×1.1=13.2V) Rtrim up 5.11 12 (100 10 ) 511 10.2 489.329K 1.225 10 10 511 10.2K Ex. When Trim-down -10%(12V×0.9=10.8V) Rtrim down If the external resistor is connected between the TRIM and SENSE (+) the output voltage set point increases (Fig. 17). The external resistor value required to obtain a percentage output voltage change △% is defined as: 511 10.2 40.9K 10 The output voltage can be increased by both the remote sense and the trim, however the maximum increase is the larger of either the remote sense or the trim, not the sum of both. When using remote sense and trim, the output voltage of the module is usually increased, which increase the output power 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_E48SC12010_01292015 10 THERMAL CONSIDERATIONS THERMAL CURVES (WITHOUT HEAT SPREADER) 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. AIRFLOW Hence, the choice of equipment to characterize the thermal performance of the power module is a wind tunnel. 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 185mmX185mm,70μm (2Oz),6 layers test PWB and is vertically positioned within the wind tunnel. The space between the neighboring PWB and the top of the power module is constantly kept at 6.35mm (0.25’’). PWB FANCING PWB Figure 19: *Hot spot 1 temperature measured point. The allowed maximum hot spot 1 temperature is defined at 122℃ E48SC12010(Standard) Output Power vs. Ambient Temperature and Air Velocity @Vin = 48V (Transverse Orientation) Output Power (W) 120 Natural Convection 100 100LFM 80 200LFM 300LFM MODULE 60 400LFM 500LFM 40 600LFM 20 50.8(2.00") AIR VELOCITY AND AMBIENT TEMPERATURE SURED BELOW THE MODULE AIR FLOW 0 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (℃) Figure 20: Output power vs. ambient temperature and air velocity @Vin=48V(Transverse Orientation, airflow from Vin+ to Vin-,without heat spreader) Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches) Figure 18: Wind tunnel test setup Thermal Derating Heat can be removed by increasing airflow over the module. To enhance system reliability; the power module should always be operated below the maximum operating temperature. If the temperature exceeds the maximum module temperature, reliability of the unit may be affected. DS_E48SC12010_01292015 11 THERMAL CURVES (WITH HEAT SPREADER) THERMAL CURVES (HEAT SPREADER ATTACH TO METAL CHASSIS) AIRFLOW AIRFLOW OUTPUT INPUT OUTPUT INPUT Figure 21: *Hot spot 2 temperature measured point. The allowed maximum hot spot 2 temperature is defined at 105℃ Output Power(W) Figure 23: * Hot spot 3 temperature measured point Output Power(W) E48SC12010(Standard) Output Power vs. Ambient Temperature and Air Velocity @Vin = 48V (Transverse Orientation,With Heat Spreader) E48SC12010(Standard) Output Power vs. Metal Chassis Temperature @Vin = 48V (Either Orientation,with Heat Spreader) 120 120 Natural Convection 100 100 100LFM 200LFM 80 80 300LFM 60 400LFM 60 500LFM 40 40 600LFM 20 20 0 80 0 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (℃) 85 90 95 100 105 110 115 120 Metal Chassis Temperature (℃) Figure 24: Output power vs.Metal chassis temperature @Vin=48V Figure 22: Output power vs. ambient temperature and air velocity (Either orientation, with heat spreader) @Vin=48V(Transverse Orientation, airflow from Vin+ to Vin-,with heat spreader) DS_E48SC12010_01292015 12 PICK AND PLACE LOCATION(SMD) RECOMMENDED PAD LAYOUT (SMD) SURFACE-MOUNT TAPE & REEL DS_E48SC12010_01292015 13 LEADED (Sn/Pb) PROCESS RECOMMEND TEMPERATURE PROFILE(SMD) Note: The temperature refers to the pin of E48SC, measured on the pin +Vout joint. LEAD FREE (SAC) PROCESS RECOMMEND TEMPERATURE PROFILE(SMD) 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 E48SC, measured on the pin +Vout joint. DS_E48SC12010_01292015 14 MECHANICAL DRAWING Surface-mount module Through-hole module All pins are copper alloy with tin plated over Nickel under plating. DS_E48SC12010_01292015 15 MECHANICAL DRAWING(WITH HEAT-SPREADER) *For modules with through-hole pins and the optional heat spreader, they are intended for wave soldering assembly onto system boards, please do not subject such modules through reflow temperature profile. All pins are copper alloy with tin plated over Nickel under plating. DS_E48SC12010_01292015 16 RECOMMENDED PAD LAYOUT DS_E48SC12010_01292015 17 PART NUMBERING SYSTEM E 48 S Type of Input Number of Product Voltage Outputs E- Eighth Brick 48 36~75V S- Single C 120 10 N R Product Series Output Voltage Output Current ON/OFF Logic Pin Length/Type 120 - 12V 10A N - Negative K – 0.110’’ F- RoHS 6/6 A- Standard Functions P - Positive N - 0.145” (Lead Free) H - with Heatspreader C- Improved E48SR series F A Option Code R - 0.170” Space - C - 0.181” RoHS 5/6 S - 0.189” T - 0.220” L - 0.248” M - SMD pin MODEL LIST MODEL NAME E48SC12010NRFH E48SC12010NRFA INPUT 36V -75V 36V -75V OUTPUT 4.3A 4.3A 12V 12V EFF @ 100% LOAD 10A 10A 91.7% 91.7% Default remote on/off logic is negative and pin length is 0.145” 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 Email: [email protected] USA: Telephone: East Coast: 978-656-3993 West Coast: 510-668-5100 Fax: (978) 656 3964 Europe: Telephone: +31-20-655-0967 Fax: +31-20-655-0999 Asia & the rest of world: Telephone: +886 3 4526107 Ext.6220~6224 Fax: +886 3 4513485 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_E48SC12010_01292015 18