FEATURES High efficiency: 92% @ 12V/5A Size: 58.4mmx22.8mmx8.4mm (2.30”x0.90”x0.33”) 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 UL/cUL 60950-1 (US & Canada) Recognized Delphi Series E48SC12005, Eighth Brick Family DC/DC Power Modules: 48V in, 12V/5A out The Delphi Series E48SC12005, Eighth Brick, 48V input, single output, isolated DC/DC converter is the latest offering from a world leader in OPTIONS Positive on/off logic SMT or through-hole version power systems technology and manufacturing -- Delta Electronics, Inc. This product family provides up to 60 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_ E48SC12005_07072011 APPLICATIONS Telecom / Datacom Wireless Networks Optical Network Equipment Server and Data Storage Industrial / Testing Equipment TECHNICAL SPECIFICATIONS (TA=25°C, airflow rate=300 LFM, Vin=48Vdc, nominal Vout unless otherwise noted.) PARAMETER NOTES and CONDITIONS E48SC12005 (Standard) Min. ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous Transient Operating Hot Spot 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 Over-Temperature Shutdown DS_E48SC12005_07072011 100ms Refer to Figure 19 for measuring point Typ. -40 -55 36 33 31 1 34 32 2 100% Load, 36Vin Max. Units 80 100 117 125 2250 Vdc Vdc °C °C Vdc 75 Vdc 35 33 3 2.2 Vdc Vdc Vdc A mA mA 2 As mA dB 70 5 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 12.36 mV mV mV V 40 15 120 25 5 140 mV mV A % 11.64 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 mV mV µs 30 40 ms ms µF Full load; 5% overshoot of Vout at startup 2000 48Vin 48Vin 92.0 90.5 % % 2250 3000 Vdc MΩ pF 350 kHz 10 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 48V,Io=Io, max; 300LFM @25C Refer to Figure 19 for measuring point -0.7 3.5 0.8 12 V V -0.7 3.5 0.8 12 1 50 10% 10 18 V V mA µA % % V -20% 13.8 15.3 4.5 21 131 M hours grams °C 2 ELECTRICAL CHARACTERISTICS CURVES 93.0 6.0 92.0 5.5 91.0 75Vin 5.0 90.0 4.0 88.0 48Vin 87.0 48Vin Loss(W) Efficiency(%) 4.5 36Vin 89.0 36Vin 3.5 3.0 86.0 36V 75Vin 85.0 36V 48V 48V 2.5 75V 75V 84.0 2.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 Output current(A) Figure 1: Efficiency vs. load current for 5A, minimum, nominal, and maximum input voltage at 25°C 0.5 1.0 1.5 2.0 2.5 3.0 3.5 Output current(A) 4.0 4.5 5.0 Figure 2: Power dissipation vs. load current for 5A, minimum, nominal, and maximum input voltage at 25°C. 2.0 1.8 1.6 1.4 Input current(A) 1.2 1.0 0.8 0.6 0.4 0.2 0.0 30 35 40 45 50 55 60 65 70 75 Input voltage(V) Figure 3: Typical full load input characteristics at room temperature DS_E48SC12005_07072011 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_E48SC12005_07072011 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, 500us/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, 500us/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_E48SC12005_07072011 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) Copper Figure 10: Input reflected ripple current, is, through a 12µH source inductor at nominal input voltage and rated load current (20mA/div,1us/div) Strip Vo(+) 10u 1u SCOPE RESISTIVE LOAD Vo(-) Figure 11: Output voltage noise and ripple measurement test setup DS_E48SC12005_07072011 6 ELECTRICAL CHARACTERISTICS CURVES 16.0 14.0 12.0 Output voltage(V) 10.0 8.0 6.0 4.0 2.0 0.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 Output current(A) Figure 12: Output voltage ripple at nominal input voltage and rated load current (Io=5A)(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_E48SC12005_07072011 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. Safety Considerations The power module must be installed in compliance with the spacing and separation requirements of the 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: DS_E48SC12005_07072011 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. The power module has extra-low voltage (ELV) outputs when all inputs are ELV. 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 10A 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 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_E48SC12005_07072011 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 -20%(12V×0.8=9.6V) 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 15.4K 20 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 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_E48SC12005_07072011 10 THERMAL CONSIDERATIONS Thermal Derating 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. 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. 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 wind tunnel. The space between the neighboring PWB and the top of the power module is constantly kept at 6.35mm (0.25’’). Figure 19: Hot spot temperature measured point. ＊The allowed maximum hot spot temperature is defined at 117℃ Output Current (A) E48SC12005(Standard) Output Current vs. Ambient Temperature and Air Velocity @Vin = 48V (Transverse Orientation) 5.0 Natural Convection PWB FACING PWB 4.0 100LFM MODULE 200LFM 3.0 300LFM 2.0 AIR VELOCITY AND AMBIENT TEMPERATURE MEASURED BELOW THE MODULE 1.0 50.8 (2.0”) AIR FLOW 0.0 25 12.7 (0.5”) 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (℃) Figure 20: Output current vs. ambient temperature and air velocity @ Vin=48V(Transverse Orientation) Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches) Figure 18: Wind tunnel test setup DS_E48SC12005_07072011 11 PICK AND PLACE LOCATION RECOMMENDED PAD LAYOUT (SMD) SURFACE-MOUNT TAPE & REEL DS_E48SC12005_07072011 12 LEADED (Sn/Pb) PROCESS RECOMMEND TEMPERATURE PROFILE Note: The temperature refers to the pin of E48SC, measured on the pin +Vout joint. LEAD FREE (SAC) PROCESS RECOMMEND TEMPERATURE 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 E48SC, measured on the pin +Vout joint. DS_E48SC12005_07072011 13 MECHANICAL DRAWING Surface-mount module Pin No. 1 2 3 4 5 6 7 8 Name +Vin ON/OFF -Vin -Vout -SENSE TRIM +SENSE +Vout 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 Pin Specification: Pins 1-3,5-7 Pins 4 & 8 1.00mm (0.040”) diameter 2. 1.50mm (0.059”) diameter All pins are copper with tin plated DS_E48SC12005_07072011 14 PART NUMBERING SYSTEM E 48 S Type of Input Number of Product Voltage Outputs E- Eighth Brick 48 36~75V S- Single C 120 05 N R Product Series Output Voltage Output Current ON/OFF Logic Pin Length/Type C- Improved E48SR series 120 - 12V 05 -5A N - Negative R - 0.170” F- RoHS 6/6 P - Positive N - 0.145” (Lead Free) M - SMD pin F A Option Code A- Standard Functions Space RoHS 5/6 MODEL LIST MODEL NAME E48SC12005NNFA E48SC12005NRFA INPUT 36V -75V 36V -75V OUTPUT 2.2A 2.2A 12V 12V EFF @ 100% LOAD 5A 5A 92% 92% 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 USA: Telephone: East Coast: 978-656-3993 West Coast: 510-668-5100 Fax: (978) 656 3964 Email: [email protected] Europe: Telephone: +31-20-655-0967 Fax: +31-20-655-0999 Email: [email protected] Asia & the rest of world: Telephone: +886 3 4526107 Ext.6220~6224 Fax: +886 3 4513485 Email: [email protected] 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_E48SC12005_07072011 15