2B-X(S)D Series Fixed Input,Isolated 2W Single Output DC/DC Converters SELECTION GUIDE Input Voltage (V) Output Voltage (V) Output Current (MA) Input Current (Rated Load) (MA) Efficiency Order code 2B0503XS 5 3.3 400 470 FEATURES 2B0505XS 5 5 400 2B0505XD 5 5 RoHS compliant 2B0509XS 5 2B0509XD ◆ ◆ ◆ ◆ ◆ ◆ I/O isolation voltage 1000VDC Operating Temperature: -40℃～﹢85℃ High efficiency up to 81% Fully encapsulated toroidal magnetics Internal SMD construction ◆ Power density up to 0.85W/cm3 ◆ No electrolytic or tantalum capacitors ◆ ◆ 5V,9V,12V and 15V output No heat sink 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 3.9 million hours MODEL SELECTION ① ② ③ ④ ⑤ 2B 05 05 X S ①Product Series ③Output Voltage ⑤SIP Package ②Input Voltage ④Fixed Input MTTF1 (%) Isolation Capacitance (PF) (KHRS) 85 30 3988 470 81 33 3956 400 470 81 33 3956 9 222 455 84 40 3682 5 9 222 455 84 40 3682 2B0512XS 5 12 167 450 84 40 3299 2B0512XD 5 12 167 450 84 40 3299 2B0515XS 5 15 133 450 84 40 2833 2B0515XD 5 15 133 450 84 40 2833 2B0524XS 5 24 83 442 82 40 2766 2B0524XD 5 24 83 442 84 40 2766 2B1205XS 12 5 400 200 81 40 2519 2B1205XD 12 5 400 200 81 40 2519 2B1209XS 12 9 222 190 83 61 2405 2B1209XD 12 9 222 190 83 61 2405 2B1212XS 12 12 167 190 85 74 2235 2B1212XD 12 12 167 190 85 74 2235 2B1215XS 12 15 133 185 85 68 2011 2B1215XD 12 15 133 185 85 68 2011 2B1224XS 12 24 83 99 84 68 1800 2B1224XD 12 24 83 99 83 69 1789 2B1515XS 15 15 133 185 85 68 2012 2B1515XD 15 15 133 185 85 70 2015 2B2405XS 24 5 400 104 80 60 2000 2B2406XS 24 6 333.3 102 82 58 1850 2B2409XS 24 9 222 100 83 65 1980 2B2412XS 24 12 167 99 84 78 1800 2B2415XS 24 15 133 99 84 58 1760 2B2424XS 24 24 83 99 84 68 1800 2B2405XD 24 5 400 104 80 60 1850 2B2409XD 24 9 222 100 83 65 1886 2B2412XD 24 12 167 99 84 78 1986 2B2415XD 24 15 133 99 84 58 1801 2B2424XD 24 24 83 99 84 68 1850 add Suffix “P” for Continuous Short Circuit Protection, e.g. 2B0505XDP Input Characteristics APPLICATIONS The 2B-X(S)D series of DC/DC converters is particularly suited to isolating and or converting DC power rails. The galvanic isolation allows the device to be configured to provide an isolated negative rail in systems where only positive rails exist. The wide temperature range guarantees startup from -40°C and full 2 watt output at 85℃. Pin compatibility with the B_XLS series ensures ease of upgradeability. MICRODC R ESERVES THE COPYRIGHT Parameter Voltage range Conditions Min Typ Max. Continuous operation,5V input types 4.5 5 5.5 Continuous operation,12V input types 10.8 12 13.2 Continuous operation,24V input types 21.6 24 26.4 7.5 15 Reflected ripple current Units V mA p-p Absolute Maximum Ratings Short-circuit protection2 1 second Lead temperature 1.5mm from case for 10 seconds 300℃ Internal power dissipation 550mW Input voltage VIN,B05 types 7V Input voltage VIN,B12 types 15V 1.Calculated using MIL-HDBK-217FN2 calculation model with nominal input voltage at full load. 2.Supply voltage must be disconnected at the end of the short circuit duration. All specifications typical at TA=25°C,nominal input voltage and rated output current unless otherwise specified. http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 1 of 5 2B-X(S)D Series OUTPUT CHARACTERISTICS Parameter Conditions Min. Rated Power TA=-40℃ to 85℃ 0.2 Voltage Set Point Accuracy See tolerance envelope Line regulation Typ. Max. Units 2 W High VIN to low VIN 1.05 1.2 %% 3.3V output 12 20 % 5V output 12.8 15 % Load regulation 9V output 8.3 15 % 10% to 100% load 12V output 6.8 15 % 15V output 6.3 15 % 24V output 6.0 15 % Capacitive loading and start up Typical start up times for this series, with a typical input voltage rise time of 2.2s and output capacitance of 10F, are saw in the table below. The product series will start into a capacitance of 47F with an increased start time, however, the maximum recommended output capacitances 10F Typical Start-Up Wave Form Start-up time 2B0505XS 444 2B0509XS 1120 2B0512XS 1930 2B0515XS 3470 2B1205XS 409 2B1209XS 1320 2B1212XS 1320 2B1215XS 2270 Isolation Characteristics Parameter Conditions Min. Isolation voltage Flash tested for 1 second 1000 Typ. Max. Units VDC Resistance Viso= 500VDC 1000 MΩ Conditions Min. General Characteristics Parameter Switching frequency Typ. Max. 60 Units kHz Temperature Characteristics Parameter Conditions Min. Specification All output types -40 85 -50 125 Storage Case temperature above ambient http://www.microdc.cn Typ. Max. B0505XS output types 30 B1205XS output types 25 All other output types 20 Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Units ℃ Page 2 of 5 2B-X(S)D Series Temperature derating graph Tolerance envelope The voltage tolerance envelope shows typical load regulation characteristics for this product series. The tolerance envelope is the maximum output voltage variation due to changes in output 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 current, 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 Frequency) should be >20MHz. CHARACTERISATION TEST METHODS Ripple & Noise Characterization Method All measurement to be taken with the following components connected to the UUT as detailed below. 50 Ohm coax cable, solder connections one end, BNC plug at the other end. Ripple and noise measurements are performed with the following test configuration. 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 100nF multilayer ceramic capacitor, general purpose R1 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 specfied values. Differential Mode Noise Test Schematic http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 3 of 5 2B-X(S)D 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 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?" The B_X(S)D series has been recognized by Underwriters Laboratory for functional insulation. Both input and output should normally be maintained 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 circuits 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 depending on materials. Construction and environment. The B series has toroidal isolation transformers, with no additional insulation between primary 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. PACKAGE SPECIFICATIONS MECHANICAL DIMENSIONS SIP Package FOOTPRINT FOOTPRINT SIP7 SIP7 DIP14 DIP Package PIN Function PIN Function 1 +Vin -Vin -Vout +Vout 1 GND NC 0V +V0 No Pin Vin 2 4 6 7 8 9 11 NC No connection 14 Specifcations can be changed any time without notice. No parallel connection or plug and play. Note: 1. The load shouldn't be less than 10%, otherwise ripple will increase dramatically. 2. Operation under 10% load will not damage the converter; However, they may not meet all specification listed. All dimensions in inches ±0.01(mm± 0.01(mm±0.25mm). 3. All specifications measured at Ta=25°C, humidity<75%, nominal input voltage and rated output load unless All pins on a 0.1(2.54) pitch and within ±0.01(0.25)of true position. Weight: 2.8g(SIP) otherwise specified. 4. In this datasheet, all the test methods of indications are based on corporate standards. 4.2g(DIP) RECOMMENDED FOOTPRINT DETAILS 4 Pin SIP Package 14 Pin DIP Package Unless otherwise stated all dimensions in inches (mm) 0.5mm http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 4 of 5 2B-X(S)D Series TUBE OUTLINE DIMENSIONS 4 PIN SIP Tube Unless otherwise stated all dimensions in inches (mm) ±0.5mm. 14 PIN DIP Tube Tube length (14 Pin DIP) : 20.47 (520mm ±2mm). Tube length (4 Pin SIP) : 20.47 (520mm ±2mm). Tube Quantity :25 RoHS COMPLIANT INFORMATION Microdc Professional Power Module,Inc. This series is compatible with RoHS soldering systems with a peak wave solder temperature of 300°C Tel:0086-20-86000646 E-mail:[email protected] for 10 seconds. The pin termination finish on the SIP package type is Tin Plate, Hot Dipped over Matte Website:http://www.microdc.cn Tin with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate. Both types in this series are Microdc Professional Power module,Inc.makes no representation that backward compatible with Sn/Pb soldering systems. the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or REACH COMPLIANT INFORMATION future patent rights. Specifications are subject to change without notice. This series has proven that this product does not contain harmful chemicals, it also has harmful chemical ©2010 substances through the registration, inspection and approval. Microdc Professional Power Module, Inc. Guangzhou http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 5 of 5