FEATURES D48SR4R215A, DC/DC Power Modules: 44V~65Vin, 4.2V, 15Aout The Led D48SR4R215A, 44V~65Vin 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 provides up to 63 watts of power or 15A of output current. 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. Typical efficiency of the 4.2V/15A module is greater than 91.7%. DS_D48SR4R215A_10312013 013 High efficiency: 91.7% @ 4.2V/15A Size: 88x48x19mm Fixed frequency operation Input UVLO OTP Output OVP Output OCP 500V isolation and basic insulation TECHNICAL SPECIFICATIONS (TA=25°C, airflow rate=300 LFM, Vin=54Vdc, nominal Vout unless otherwise noted.) PARAMETER NOTES and CONDITIONS D48SR4R215A Min. ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous 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 Inrush Current (I2t) 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 Operating Output Current Range Output Over Current Protection(hiccup mode) 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 Input Output Capacitance (note1) EFFICIENCY 100% Load 100% Load 60% Load ISOLATION CHARACTERISTICS Input to Output Isolation Resistance Isolation Capacitance FEATURE CHARACTERISTICS Switching Frequency Output Over-Voltage Protection GENERAL SPECIFICATIONS MTBF Weight Over-Temperature Shutdown (Hot spot) Typ. 0 -40 -55 Io=Io, min to Io, max Vin=44V to 65V Tc=-40°C to 65°C Over sample load, line and temperature 5Hz to 20MHz bandwidth Vin=54V, Full Load, 1µF ceramic, 10µF tantalum Vin=54V, Full Load, 1µF ceramic, 10µF tantalum Vin=44V to 65V Units 65 65 125 500 Vdc Vdc °C °C Vdc 44 54 65 Vdc 41.5 38.5 1.5 42.5 40 2.5 43.5 41.5 3.5 1.8 Vdc Vdc Vdc A mA A2s 100% Load, 44Vin Vin=54V, Io=0A Vin=54V, Io=Io.max, Tc=25°C Max. 50 4.1 4.2 4.3 Vdc ±15 ±15 4.0 ±5 ±5 ±120 4.2 4.4 mV mV mV V 15 mV mV A 100 25 0 Output Voltage 10% Low 54Vin, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs 75% Io.max to 50% Io.max 50% Io.max to 75% Io.max 125 % 300 300 200 mV mV µs 3 Full load; 5% overshoot of Vout at startup 0 Vin=44V Vin=54V Vin=54V 3000 91.7 91.3 91.5 % % % 500 10 Vdc MΩ nF 300 125 KHz % 3 40.6 M hours grams 135 °C 130 °C 10 Over full temp range; % of nominal Vout Io=80% of Io, max; Ta=25°C, airflow rate=300FLM Refer to Figure 8 for Hot spot location (54Vin,80% Io, 0LFM) Over-Temperature Shutdown ( NTC resistor ) Note: Please attach thermocouple on NTC resistor to test OTP function, the hot spots’ temperature is just for reference. mS µF Note1: For applications with higher output capacitive load, please contact Delta. D48SR4R215A_10312013 2 ELECTRICAL CHARACTERISTICS CURVES Figure 1: Efficiency vs. load current for minimum, nominal, and maximum input voltage at 25°C Figure 2: Power dissipation vs. load current for minimum, nominal, and maximum input voltage at 25°C. Figure 3: Typical full load input characteristics at room temperature D48SR4R215A_10312013 3 ELECTRICAL CHARACTERISTICS CURVES 0 0 0 0 Figure 4: Turn-on transient at full rated load current (resistive load) (2ms/div). Vin=54V. Top Trace: Vout, 2.0V/div; Bottom Trace: Vin, 30V/div Figure 5: Turn-on transient at zero load current (2ms/div). Vin=54V. Top Trace: Vout: 2.0V/div, Bottom Trace: Vin, 30V/div 0 0 Figure 6: Output voltage response to step-change in load current (50%-75%-50% of Io, max; di/dt = 0.1A/µs; Vin is 54V). Load cap: 10µF tantalum capacitor and 1µF ceramic capacitor. Top Trace: Vout (0.2V/div, 200us/div), Bottom Trace:Iout (5A/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 D48SR4R215A_10312013 4 FEATURES DESCRIPTIONS THERMAL CONSIDERATIONS Over-Current Protection 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. The module 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 module will automatically shut down, and enter hiccup mode. For hiccup mode, the module will try to restart after shutdown. If the over current condition still exists, the module will shut down again. This restart trial will continue until the over-current 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, and enter in hiccup mode. For hiccup mode, the module 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. 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 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’’). Over-Temperature Protection For auto-restart mode, the module will detect temperature after shutdown. If the over temperature condition still exists, the module will remain shutdown. This restart trial will continue until the over-temperature condition is corrected. PWB FANCING PWB MODULE AIR VELOCITY AND AMBIENT TEMPERATURE SURED BELOW THE MODULE 50.8(2.00") 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, and enter in auto-restart mode. AIR FLOW Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches) Figure 7: 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. D48SR4R215A_10312013 5 12.7mm (0.50") THERMAL CURVES 25.4mm (1.00") Figure 8: * Hot spot’s temperature measured point. The allowed maximum hot spot’s temperature is defined at 124℃ Output Current (A) D48SR4R215A Output Current vs. Ambient Temperature and Air Velocity @Vin = 54V (Natural Convection) 15 12 Natural Convection 9 6 3 0 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (℃) Figure 9: Output current vs. ambient temperature and air velocity @Vin=54V (Natural convection) D48SR4R215A_10312013 6 MECHANICAL DRAWING Note: components(except connectors) size/location etc shown on above drawings just for reference, may different from real samples. D48SR4R215A_10312013 7 MODEL LIST MODEL NAME D48SR4R215A INPUT 44V~65V OUTPUT 1.8A 4.2V EFF @ 100% LOAD 15A 91.5% @ 54Vin 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: Phone: +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. D48SR4R215A_10312013 8