BXXS/DXX 5V&12V Series MICRODC Isolated 2W Single Output DC/DC Converters SELECTION GUIDE Input voltage Output voltage Output current Input Current (Rated Load) (V) (V) (MA) (MA) (%) (PF) ( K H R S) B05 S/D 05-2W 5 5 400 470 81 33 3956 B05 S/D 09-2W 5 9 222 455 84 40 3682 B05 S/D 12-2W 5 12 167 450 84 40 3299 order code FEATURES RoHS compliant Efficiency up to 81% 3 Power density up to 0.85W/cm Wide temperature performance at full Isolation Efficiency Capacitance MTTF 1 B05 S/D 15-2W 5 15 133 450 84 40 2833 B12 S/D 05-2W 12 5 400 200 81 40 2519 B12 S/D 09-2W 12 9 222 190 83 61 2405 B12 S/D 12-2W 12 12 167 190 85 74 2235 B12 S/D 15-2W 12 15 133 185 85 68 2011 Max . Package Style SIP/DIP 2 Watt load,-40°C to 85°C Single isolated output UL 94V-0 package material No heatsink required Pin compatible with B_LS series Industry standard pinout Power sharing on output 1KVDC isolation INPUT CHARACTERISTICS Min . Typ . Continuous operation,5V input types 4.5 5 5.5 Continuous operation,12V input types 10.8 12 13.2 7.5 15 Parameter Conditions Voltage range Reflected ripple current Units V MA p-p 5V,9V,12V and 15V output Internal SMD construction Fully encapsulated with toroidal magnetics No external components required MTTF up to 3.9 million hours OUTPUT CHARACTERISTICS Parameter Conditions Rated Power TA=- 40°C to 85°C 1 Voltage Set Point Accuracy Line regulation Min. Typ. Max. Units 2 W 1.2 %% See tolerance envelope 1.05 High VIN to low VIN No electrolytic or tantalum capacitors UL 60950 recognised D E S C R I P T ION I ON The B_S-2W 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 ° C. Pin compatibility with the B_LS series ensures ease of upgradeability. Green Technolgy CE ABSOLUTE MAXIMUM Short-circuit protection 2 RATINGS 1 second Lead temperature 1.5mm from case for 10 seconds 300°C Internal power dissipation 550mW Input voltage V IN,B05 types 7V Input voltage V IN,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. REACH Http://www.microdc.cn Technical enquiries-Email:[email protected] Tel:0086-20-86000646 B_S-2W SERIES Page 1 of 4 BXXS/DXX 5V&12V Series MICRODC Isolated 2W Single Output DC/DC Converters 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 swn in the table below. The product series will start into a capacitance of 47F with an increased start time, however, the maximum recommended output capacitanceis 10F Start-up time B05 S 05 444 B05 S 09 1120 B05 S 12 1930 B05 S 15 3470 B12 S 05 409 B12 S 09 1320 B12 S 12 1320 B12 S 15 2270 Typical Start-Up Wave Form 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. Max. 60 Switching frequency Units kHz TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Specification All output types -40 85 -50 125 Storage Case Tempetature above ambient Typ. Max. B05 S 05 output types 30 B12 S 05 output types 25 All other output types 20 TEMPERATURE DERATING GRAPH Units °C 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 loading. 1. See derating graph. All specifications typical at T A=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 B_S-2W SERIES Page 2 of 4 MICRODC BXXS/DXX 5V&12V Series Isolated 2W Single Output DC/DC Converters 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_S-2W 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. 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 Characterisation 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. 1uF X7R multilayer ceramic capacitor, voltage rating to be a minimum of 3 times the output voltage of the DC/DC converter 10uF 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 100nF multilayer ceramic capacitor, general purpose C3 R1 450Ω resistor, carbon film,+/-1% tolerance R2 50Ω BNC termination T1 3T of the caox 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 specified values. C1 C2 Differential Mode Noise Test Schematic Http://www.microdc.cn Technical enquiries-Email:[email protected] Tel:0086-20-86000646 B_S-2W SERIES Page 3 of 4 BXXS/DXX 5V&12V Series MICRODC Isolated 2W Single Output DC/DC Converters PACKAGE SPECIFICATIONS MECHANICAL DIMENSIONS SIP PIN CONNECTIONS-4 PIN SIP package Pin MICRODC Function 1 + V IN 2 - V IN 4 - V OUT 6 + V OUT Weight: 2.8g 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 4 Pin SIP Package Unless otherwise stated all dimensions in inches (mm) 0.5mm TUBE OUTLINE DIMENSIONS 4 Pin SIP Tube Unless otherwise stated all dimensions in inches (mm) ±0.5mm. Tube length( 4 Pin SIP):20.47(520mm±2mm). Tube Quantity: 25 MICRODC Microdc Professional Power Module,Inc. tech @ microdc . cn Tel:0086-20-86000646 E-mail:[email protected] Website:http://www.microdc.cn RoHS COMPLIANT INFORMATION Green Technolgy Microdc Professional Power module, Inc.makes no representation that 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 future patent rights. Specifications are subject to change without notice. 2010 Microdc Professional Power Module, Inc. Guangzhou Http://www.microdc.cn REACH This series is compatible with RoHS soldering systems with a peak wave solder temperature of 300°C for 10 seconds. The pin termination finish on the SIP package type is Tin Plate, Hot Dipped over Matte Tin with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate. Both types in this series are backward compatible with Sn/Pb soldering systems. REACH COMPLIANT INFORMATION This series has proven that this product does not contain harmful chemicals, it also has harmful chemical substances through the registration, inspection and approval. Technical enquiries-Email:[email protected] Tel:0086-20-86000646 B_S-2W SERIES Page 4 of 4