WRA-YMD-3W＆WRB-YMD -3W Series 3W, WIDE INPUT, ISOLATED & REGULATED DUAL/SINGLE OUTPUT DC-DC CONVERTER SELECTION GUIDE Input Output Efficiency Order code Voltage(VDC) Voltage Current(mA) (%,Typ) FEATURES ◆Wide (2:1) Input Range ◆Short Circuit Protection(automatic recovery) ◆1500VDC Isolation Nominal Range Max* (VDC) Max. Min. WRA0505YMD-3W 5 4.5-9 11 ±5 ±300 ±30 68 WRA0512YMD-3W 5 4.5-9 11 ±12 ±125 ±12 72 WRA0515YMD-3W 5 4.5-9 11 ±15 ±100 ±10 71 WRB0505YMD-3W 5 4.5-9 11 5 600 60 68 WRB0512YMD-3W 5 4.5-9 11 12 250 25 72 ◆Operating Temperature: -40℃～﹢85℃ WRB0515YMD-3W 5 4.5-9 11 15 200 20 71 ◆No heat sink required WRA1205YMD-3W 12 9-18 22 ±5 ±300 ±30 76 ◆No external component required WRA1212YMD-3W 12 9-18 22 ±12 ±125 ±12 80 ◆Internal SMD required WRA1215YMD-3W 12 9-18 22 ±15 ±100 ±10 80 ◆Five sided metal shielding WRB1205YMD-3W 12 9-18 22 5 600 60 77 WRB1209YMD-3W 12 9-18 22 9 333 33 78 WRB1212YMD-3W 12 9-18 22 12 250 25 80 WRB1215YMD-3W 12 9-18 22 15 200 20 81 WRB1224YMD-3W 12 9-18 22 24 125 12 80 WRA2405YMD-3W 24 18-36 40 ±5 ±300 ±30 77 WRA2412YMD-3W 24 18-36 40 ±12 ±125 ±12 80 WRA2415YMD-3W 24 18-36 40 ±15 ±100 ±10 80 WRB2405YMD-3W 24 18-36 40 5 600 60 77 WRB2409YMD-3W 24 18-36 40 9 333 33 79 WRB2412YMD-3W 24 18-36 40 12 250 25 81 WRB2415YMD-3W 24 18-36 40 15 200 20 81 WRB2424YMD-3W 24 18-36 40 24 125 12 80 WRA4805YMD-3W 48 36-72 80 ±5 ±300 ±30 77 WRA4812YMD-3W 48 36-72 80 ±12 ±125 ±12 80 WRA4815YMD-3W 48 36-72 80 ±15 ±100 ±10 81 WRB4805YMD-3W 48 36-72 80 5 600 60 77 WRB4809YMD-3W 48 36-72 80 9 333 33 79 WRB4812YMD-3W 48 36-72 80 12 250 25 81 WRB4815YMD-3W 48 36-72 80 15 200 20 81 WRB4824YMD-3W 48 36-72 80 24 125 12 80 WRB11012YMD-3W 110 72-144 155 12 250 25 80 WRB11024YMD-3W 110 72-144 155 24 125 12 78 ◆MTBF>1000Khours MODEL SELECTION ① ② ③ ④ ⑤ ⑥ ⑦ WRB 48 05 Y M D -3W ①Product Series ③Output Voltage ⑤Metal Shield ⑦Rated Power ②Input Voltage ④Wide (2:1) Input Range ⑥DIP Package Style APPLICATIONS The WRA_YMD-3W&WRB_YMD-3W Series are specially designed for applications where a wide range input voltage power supplies are isolated from the input power supply in a distributed power supply system on a circuit board. These products apply to: 1) Where the voltage of the input power supply is wide range (Voltage range≤2:1); 2) Where isolation is necessary between input and output (Isolation voltage≤1500VDC); 3) Where the regulation of the Output voltage and the output ripple noise are demanded. *Input voltage can’t exceed this value,or will cause the permanent damage. MICRODC reserves the copyright http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 page 1/4 WRA-YMD-3W＆WRB-YMD -3W Series TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Output power Refer to products program 0.3 Positive voltage accuracy Refer to recommended circuit Negative voltage accuracy TYPICAL CHARACTERISTICS Max. Units 3 W ±1 ±3 % Refer to recommended circuit ±3 ±5 % Load regulation Form 10% to 100% load ±0.5 ±1* % Line regulation Input voltage from low to high ±0.2 ±0.5 % Temperature drift (Vout) Refer to recommended circuit ±0.03 %/°C Ripple & Noise** 20MHz Bandwidth 75 150 mVp-p Switching frequency 100% load, input voltage range 300 * Typ. Temperature Derating Graph KHz Dual output models unbalanced load: ±5%. RECOMMENDED CIRCUIT ** Test ripple and noise by “ parallel cable ” method. See detailed operation Output Graph instructions at Testing of Power Converter section, application notes. COMMON SPECIFICATIONS Parameter Conditions Min. Typ. Storage humidity Max. Units 95 % Operating temperature -40 ±1 85 ℃ Storage temperature -55 ±3 125 ℃ 15 Temp. rise at full load Lead temperature ℃ 300 1.5mm from case for 10 seconds ℃ Cooling Free Air Convection Short circuit protection Continuous, Automatic recovery Case material Aluminium Alloy 0.2 No-load power consumption W Isolation voltage Tested for1 minute and 1mA max 1500 VDC Isolation resistance Test at 500VDC 1000 MΩ Isolation Capacitance Input/output 100 1000 MTBF K hours 15 Weight APPLICATION NOTE Requirement on output load pF g Output External Capacitor Table(Table 1) Single Vout Cout Dual Vout Cout (VDC) (μF) (VDC) (μF) 3.3 2200 ±5 680 5 1000 ±9 470 9 680 ±12 330 In order to ensure the product operate efficiently and 12 470 ±15 220 Reliably,in addition to a max load(namely full load), a 15 330 ------Minimum load is specified for this kind of DC/DC 24 220 ------Converter.Make sure the specified range of input voltage Is not exceeded,the minimum output load no less than 10% load.If the actual load is less than the specified minimum load, the output ripple may increase sharply while its efficiency and reliability will reduce greatly.If the actual output power is very small,please add an appropriate resistor as extra loading,or contact our company for other lower output power products. http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 page 2/4 WRA-YMD-3W＆WRB-YMD -3W Series APPLICATION NOTE Recommended Circuit All the WRA_YMD-3W&WRB_YMD-3W Series have been tested according to the following recommended testing circuit before leaving factory.This series should be tested under load(see Figure 1). If you want to further decrease the input/output ripple,you can increase capacitance properly or choose capacitors with low ESR.However,the capacitance of the output filter capacitor must be proper.If the capacitance is too big,a startup problem might arise.For every channel of output,provided the safe and reliable operation is ensured,the greatest capacitance of its filter capacitor sees (Table 1).General: Cin: 5V&12V 100μF 24V&48V 10μF-47μF Cout: 10μF/100mA Input current While using unstable power source,please ensure the output voltage and ripple voltage do not exceed indexes of the converter.The preceding power source must be able to provide for converter sufficient starting current Ip(Figure 2).General:Ip≤1.4*Iin-max No parallel connection or plug and play OUTLINE DIMENSIONS ＆ FOOTPRINT DETAILS MECHANICAL DIMENSIONS Note: Unit:mm[inch] Pin section tolerances:±0.10mm[±0.004inch] General tolerances:±0.25mm[±0.010inch] http://www.microdc.cn RECOMMENDED FOOTPRINT RECOMMENDED FOOTPRINT Top view,grid:2.54mm(0.1inch) diameter:1.00mm(0.039inch) Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 page 3/4 WRA-YMD-3W＆WRB-YMD -3W Series OUTLINE DIMENSIONS ＆ FOOTPRINT DETAILS FOOTPRINT DETAILS TUBE OUTLINE DIMENSIONS Pin Single Dual 1 GND GND 2 Vin Vin 3 +Vo +Vo 4 NC 0V 5 0V -Vo NC:No connection When the environment temperature is higher than 71℃, the product output power should be less then 60% of the rated power. Note: No parallel connection or plug and play. Unit :mm[inch] General tolerances:±0.50mm[±0.020inch] Use dual output simultaneously,forbid opening L=530mm[20.866inch] Tube Quantity: 19pcs output pin (0V) to use as single output. L=220mm[8.661inch] Tube Quantity: 7pcs 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. 3. All specifications measured at Ta=25°C, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 4. In this datasheet, all the test methods of indications are based on corporate standards. 5. Only typical models listed, other models may be different, please contact our technical person for more details. 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 4/4