WRB-YDK-3W Series 3W 3W,,Wide Input Input,,ISOLATED®ULATED SINGLE OUTPUT DC/DC Converters Models Order Code Nominal Input Voltage Rated Output Voltage Output Current1 Min.Load Full Load Input Current Full load Ef Efffcienc2 Isolation (Min.) Capacitance MTTF3 V (nom.) V mA mA mA % pF kHrs WRB0505YDK-3W 5 5 100-150 400-600 615 66 40 1939 WRB0509YDK-3W 5 9 55-83 222-333 563 72 52 1926 WRB0512YDK-3W 5 12 42-62 166-250 548 71 43 1907 WRB0515YDK-3W 5 15 33-50 133-200 533 73 44 1924 WRB1205YDK-3W 12 5 150 600 362 71 36 1928 WRB1209YDK-3W 12 9 83 333 320 78 52 1916 WRB1212YDK-3W 12 12 62 250 316 78 44 1897 WRB1215YDK-3W 12 15 50 200 308 79 47 1914 WRB2403YDK-3W 24 3.3 227 909 178 70 30 1671 WRB2405YDK-3W 24 5 150 600 174 70 36 1673 WRB2409YDK-3W 24 9 83 333 156 78 52 1663 WRB2412YDK-3W 24 12 62 250 154 80 44 1644 WRB2415YDK-3W 24 15 50 200 150 82 54 1657 ◆UL 94V-0 package material WRB4803YDK-3W 48 3.3 227 909 87 71 30 1676 ◆Operating temperature range -40℃ to 85℃ WRB4805YDK-3W 48 5 150 600 87 73 35 1668 ◆No heatsink required WRB4809YDK-3W 48 9 83 333 78 80 52 1663 ◆Footprint 4.73cm2 WRB4812YDK-3W 48 12 62 250 77 81 44 1648 WRB4815YDK-3W 48 15 50 200 76 81 53 1661 FEATURES ◆RoHS compliant ◆Industry standard footprint ◆Effciency to 82% ◆Power density 0.90W/cm3 ◆2:1 wide input range ◆Single isolated output ◆Short circuit protection ◆Low profile 24 pin case ◆5V, 12V, 24V & 48V input ge can’t exceed this value,or will cause the permanent damage. ◆3.3V, 5V, 9V, 12V & 15V output INPUT CHARACTERISTICS ◆Internal SMD construction Parameter ◆Fully encapsulated MODEL SELECTION WRB①12②05③Y④ D⑤K⑥-3W(600)⑦ ①Product Series ②Input Voltage ③Output Voltage ④2:1Wide Input Range ⑤DIP24 Package Style ⑥Footprint Rank Shape ⑦Rated Power(Output current) APPLICATIONS Max. Units 5 9 VDC 12 18 VDC 24 36 VDC 48 72 VDC WRB2403 180 360 mA p-p WRB4803 140 290 mA p-p Reflected ripple All WRB05XX 400 500 mA p-p current2 All WRB12XX 150 170 mA p-p All other WRB24XX 290 360 mA p-p All other WRB48XX 100 127 mA p-p Voltage range The WRB-YDK-3W series is a range of low profile DC/DC converters offering a single regulated output over a 2:1 input voltage range. All parts deliver 3W output power up to 85 ℃ Conditions Min. All WRB05XX 4.5 All WRB12XX 9 All WRB24XX 18 All WRB48XX 36 Typ. ABSOLUTE MAXIMUM RATINGS without heatsinking, except the 4.5V to 9V input voltage range which should be derated to 2W at the lower input Short-circuit protection Continuous voltage. A flyback oscillator design with isolated feedback is Lead temperature 1.5mm from case for 10 seconds 300°C used to give regulation over the full operating range of 25% Minimum load 25% of rated load to 100% of full load. It is strongly recommended that external Input voltage 05 types 10V Input voltage 12 types 20V Input voltage 24 types 40V Input voltage 48 types 80V Internal dissipation 1.7W capacitors be used on input and output to guarantee performance over full load and input voltage range. 1.Refer to power derating graph. 2.Measured at full load with external input/output capacitors, refer to filter circuit 1. MICRODC reserves the copyright 3.Calculated using MIL-HDBK-217F with nominal input voltage at full load (ground benign) at 25°C. 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 4 WRB-YDK-3W Series OUTPUT CHARACTERISTIC Parameter Conditions Voltage set point accuracy With external input/output capacitors Min. Typ. Max. Units ±1 ±5 % Low line to high line, 3.3V output with external input/output capacitors 0.05 0.25 % Low line to high line, all other outputs with external input/output capacitors 0.05 0.5 % 25% load to 100% load, 3.3V output with external input/output capacitors 0.6 1.0 % 25% load to 100% load, all other outputs with external input/output capacitors 0.2 0.5 % BW = 20Hz to 300kHz, 3.3V output with external input/output capacitors 80 120 mV rms BW = 20Hz to 300kHz, all other outputs with external input/output capacitors 5 10 mV rms 180 mV p-p 50 100 mV p-p Typ. Max. Units Line regulation Load regulation Ripple1 BW = DC to 100MHz, 3.3V output with external input/output capacitors Noise BW = DC to 20MHz, all other outputs with external input/output capacitors GENERAL CHARACTERISTICS Parameter Conditions Min. 100% load VIN nominal 3.3V output 160 220 kHz 25% load VIN nominal 3.3V output 290 560 kHz 100% load VIN nominal, all other outputs 80 220 kHz 25% load VIN nominal, all other outputs 290 560 kHz Max. Units Switching frequency TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Operation Ambient temperature -40 85 ℃ -50 130 ℃ Max. Units Storage Cooling Typ. Free air convection ISOLATION CHARACTERISTICS Parameter Conditions Min. Typ. Isolation test voltage Flash tested for 1 second 100 VDC Resistance Viso=500VDC 1 GΩ TECHNICAL NOTES ISOLATION VOLTAGE ‘Hi Pot Test’,‘Flash Tested’,‘Withstand Voltage’,‘Proof 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. Microdc Professional Power Module WRB-YDK-3W 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 WRB-YDK-3W series, 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-accessible 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 WRB-YDK-3W series has an EI ferrite core, 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 rated for better than functional isolation where the wire enamel insulation is always supplemented by a further insulation system of physical spacing or barriers. 1. For lower ripple refer to circuit for reduced ripple. http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 2 of 4 WRB-YDK-3W Series APPLICATION NOTES Recommended input & output capacitors Although these converters will work without external capacitors, they are necessary in order to guarantee the full parametric performance over the full line and load range. All parts have been tested and characterized using the following values and test circuit. Input Voltage CIN Output Voltage 5V, 12V 100µF,25V(0.25Ωat 100KHz) 3.3V 24V, 48V 10µF,100V(1.5Ωat 100KHz) 5V, 12V, 15V COUT 100µF, 25V (0.25Ω at 100KHz) LOUT MPS# - 24100C Not required Test circuit, 5V, 12V and 15V output Recommended circuit for reduced ripple 3.3V output Output load The minimum rated load across the whole input voltage range is 25% of the full load output. It is important to take care that the load does not fall below this as the output ripple will greatly increase. While this condition will not harm the device the resultant increase in output ripple could cause customers’ application to malfunction. NDY05 POWER DERATING CURVE Input voltage (V) http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 3 of 4 WRB-YDK-3W Series PACKAGE SPECIFICATIONS MECHANICAL DIMENSIONS PIN CONNECTIONS (TOP VIEW) RECOMMENDED FOOTPRINT DETAILS 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. Unless otherwise stated all dimensions in inches ±0.01 (mm ±0.5mm). TUBE OUTLINE DIMENSIONS Unless otherwise stated all dimensions in inches ±0.01 (mm) ±0.5mm. Tube length : 20.47±0.079 (520mm ±2mm). Tube Quantity : 15 RoHS COMPLIANT INFORMATION 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. Microdc Professional Power Module,Inc. Tel:0086-20-86000646 REACH COMPLIANT INFORMATION E-mail:[email protected] Website:http://www.microdc.cn http://www.microdc.cn 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 Page 4 of 4