B-XLD-W75 Series Isolated 0.75W Single Output DC/DC Converters SELECTION G UIDE FEATURES RoHS compliant ◆ I/O isolation voltage 1000VDC ◆ Operating Temperature: -40℃～﹢85℃ ◆ High efficiency up to 81% Input Voltage (V) Output Voltage (V) Output Current (MA) Input Current (Rated Load) (MA) Efficiency Order code B0505XLD-W75 5 5 150 290 B0512XLD-W75 5 12 62.5 B0515XLD-W75 5 15 B1205XLD-W75 12 B1212XLD-W75 B1215XLD-W75 (%) (KHRS) 69 28 1847 260 77 33 981 50 253 79 40 667 5 150 121 69 36 1485 12 12 62.5 110 76 58 869 12 15 50 110 76 56 613 B1505XLD-W75 15 5 150 93 69 27 2110 B1512XLD-W75 15 12 62.5 85 77 58 1790 B1515XLD-W75 15 15 50 84 78 67 1560 B2405XLD-W75 24 5 150 60 70 61 1253 B2412XLD-W75 24 12 62.5 53 78 98 784 B2415XLD-W75 24 15 50 52 80 122 566 ◆ Fully encapsulated toroidal magnetics ◆ MTTF 1 Isolation Capacitance (PF) Internal SMD construction ◆ Power density up to 0.85W/cm3 ◆ No electrolytic or tantalum capacitors ◆ 5V,12Vand 15V output ◆ No heatsink required ◆ Dual output from a single input rail ◆ UL 94V-0 package material ◆ No external components required ◆ Industry standard pinout ◆ Power sharing on output ◆ MTTF up to 3.4 million hours ◆ MODEL SELECTION B① 05② 05③ X④ LS(D) ⑤-W75 ①Product Series ③Output Voltage ⑤Package Style ②Input Voltage ④Fixed Input Input Characteristics Parameter Conditions Min Typ Max. Continuous operation,5V input types 4.5 . .5 5.5 Continuous operation,12V input types 10.8 12 13.2 APPLICATIONS Continuous operation,15V input types 13.5 15 16.5 The B-XLD-W75 series of industrial temperature range DC/DC converters are the standard building blocks for on-board distributed power systems.They are ideally suited for providing single rail supplies on primarily digital boards with the added benefit of galvanic isolation to reduce switching noise. Surface mount technology and advanced packaging materials produce rugged reliable performance over an extended temperature range from -40°C to 85°C. Continuous operation,24V input types 21.6 24 26.4 Voltage range Reflected ripple current 5V&12V input types 1.6 2.0 15V&24V input types 5 10.0 Units V mA p-p Absolute Maximum Ratings Lead temperature 1.5mm from case for 10 seconds Internal power dissipation 300°C 550mW Input voltage VIN,B0505XLS,B0512XLS,B0515XLS types 7V Input voltage VIN,B1205XLS,B1212XLS,B1215XLS types 15V Input voltage VIN,B1505XLS,B151XLS,B1515XLS types 18V Input voltage VIN,B2405XLS,B2412XLS,B2415XLS types 28V 1.Calculated using MIL-HDBK-217FN2 calculation model with nominal input voltage at full load. http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 1 of 4 B-XLD-W75 Series OUTPUT CHARACTERISTICS Parameter Conditions Rated Power TA=-40°C to 120°C Voltage Set Point Accuracy See tolerance envelope Line regulation High VIN to low VIN Min. Typ. 1.0 Max. Units 1 W 1.2 %% Isolation Characteristics Parameter Conditions Min. Typ. Max. Units Isolation test voltage Flash tested for 1 second 1000 VDC Resistance Viso= 1000VDC 10 GΩ General Characteristics Parameter Conditions Min. Typ. 5V input types 110 12V input types 160 15V input types 90 24V input types 80 Max. Switching frequency Units kHz Temperature Characteristics Parameter Conditions Min. Specification All output types -40 85 -50 130 Storage Typ. Max. Units ℃ 5V output types 23 All other output types 28 Case temperature above ambient TOLERANCE ENVELOPE B2405XLS-1W B1512XLS,B1515XLS,B2412XLS,B2415XLS All other types All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.Another 24V& 48V products, please inquire Our technical department! http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 2 of 4 B-XLD-W75 Series Technical notes ISOLATION VOLTAGE "Hi Pot Test","Flash Tested","Withstand Voltage","Dielectric Withstand Voltage"&”Isolation Test Voltage" are all terms that relate to the same thing, a test voltage. Applied for a specified time, across a component designed to provide electrical isolation, to verify the integrity of that isolation. Professional Power Module B_XLS series of DC/DC converters are all 100% production tested at their stated isolation voltage. This is 1KVDC for 1 second. A question commonly asked is,"What is the continuous voltage that can be applied across the part in normal operation?" For a part holding no specific agency approvals, such as the B_XLS series ,both input and output should normally be maintaine d within SELV limits i.e. less than 42.4V peak, or 60VDC.The isolation test voltage represents a measure of immunity to transient voltages and the part should never be used as an element of a safety isolation system. The part could be expected to function correctly with several hundred volts offset applied continuously across the isolation barrier, but then the circuitry on both sides of the barrier must be regarded as operating at an unsafe voltage and further isolation/insulation systems must form a barrier between these circ uits and any user-acssible circuitry according to safety standard requirements. REPEATED HIGH-VOLTAGE ISOLATION TESTING It is well known that repeated high-voltage isolation testing of a barrier component can actually degrade isolation capability, to a lesser or greater degree dep ending on materials. Construction and environment. The B_XLS series has toroidal isolation transformers, with no additional insulation between pri mary and secondary windings of enameled wire. While parts can be expected to withstand several times the stated test voltage, the isolation capability does depend on the wire insulation. Any material, including this enamel (typically polyurethane) is susceptible to eventual chemical degradation when subject to very high applied voltages thus implying that the number of tests should be strictly limited. We therefore strongly advise against repeated high voltage isolation testing. but if it is absolutely required, that the voltage be reduced by 20% from specified test voltage. This consideration equally applies to agency recognized parts for better than functional isolation where the wire enamel insulation is always supplemented by a further insulation system of physical spacing or barriers. OUTPUT RIPPLE REDUCTION Output ripple reduction By using the values of inductance and capacitance stated, the output ripple at the rated load is lowered to 5mV p-p max. Component selection Capacitor: Ceramic chip capacitors are recommended. It is required that the ESR(Equivalent Series Resistance)should be as low as possible.X7R types are recommended. The voltage rating should be at least twice(except for 15V output),the rated output voltage of the DC/DC converter. Inductor: The rated current of the inductor should not be less than of the output of the DC/DC converter. At the rated curren t, the DC resistance of the inductor should be such that the voltage drop across the inductor is <2% of the rated voltage of the DC/DC converter. The SRF(Self Resonant Freq uency) should be >20MHz. CHARACTERISATION TEST METHODS Ripple & Noise Characterization Method Ripple and noise measurements are performed with the following test confi guration. C1 1μF X7R multilayer ceramic capacitor, voltage rating to be a minimum of 3 times the output voltage of the DC/DC converter C2 10μF tantalum capacitor, voltage rating to be a minimum of 1.5 times the output voltage of the DC/DC converter with an ESR of less than 100mΩ at 100 KHz C3 R1 100nF multilayer ceramic than 100mΩ at 100 kHz capacitor, general purpose 450Ω resistor, carbon fi lm, ±1% tolerance R2 50Ω BNC termination T1 3T of the coax cable through a ferrite toroid RLOAD Resistive load to the maximum power rating of the DC/DC converter. Connections should be made via twisted wires Measured values are multiplied by 10 to obtain the speciffi ed values. Differential Mode Noise Test Schematic http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 3 of 4 B-XLD-W75 Series PACKAGE SPECIFICATIONS MECHANICAL DIMENSIONS 7 Pin SIP package FOOTPRINT DETAILS -7 PIN SIP -14 PIN DIP 14 Pin DIP package Pin 1 Function +Vin -Vin -Vout +Vout 2 4 6 Pin 1 Function -Vin NC -Vout +Vout No Pin +Vin 7 8 9 11 14 TEMPERATURE DERATING GRAPHS All dimensions in inches ±0.01(mm±0.25mm). All pins on a 0.1(2.54) pitch and within ±0.01(0.25)of true position. RECOMMENDED FOOTPRINT DETAILS RECOMMENDED FOOTPRINT DETAILS 7 Pin SIP Package 14 Pin SIP Package All dimensions in inches ±0.01 (mm± 0.25mm). All dimensions in inches ±0.01 (mm± 0.25mm). TUBE OUTLINE DIMENSIONS 7 PIN SIP Tube Unless otherwise stated all dimensions in inches (mm) ±0.5mm. http://www.microdc.cn 14 PIN SIP Tube Tube length (14 Pin DIP) : 20.47 (520mm ±2mm). Tube length (7 Pin SIP) : 20.47 (520mm ±2mm). Tube Quantity :25 Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 4 of 4