WRA-YD-3W＆WRB-YD -3W Series 3W, WIDE INPUT, ISOLATED & REGULATED DUAL/SINGLE OUTPUT DC DC--DC CONVERTER SELECTION GUIDE Input Output Efficiency Order code Voltage(VDC) Current(mA) Voltage (%.Typ.) FEATURES ◆Wide (2:1) Input Range ◆Short Circuit Protection(automatic recovery) ◆1500VDC Isolation ◆Operating Temperature: -40℃～﹢85℃ ◆Five sided metal shielding ◆No external component required ◆Internal SMD construction ◆RoHS Compliance ◆MTBF>1000Khours MODEL SELECTION ① ② ③ ④ ⑤ ⑥ WRB 24 15 Y D -3W ①Product Series ②Input Voltage ③Output Voltage ④Wide (2:1) Input Range ⑤DIP24 Package Style ⑥ Rated Power APPLICATIONS The WRA_YD-3W&WRB_YD-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. (VDC) Max. Min. 11 ±5 ±300 ±30 76 11 ±12 ±125 ±12 81 4.5-9 11 ±15 ±100 ±10 83 5 4.5-9 11 5 600 60 76 WRB0512YD-3W 5 4.5-9 11 12 250 25 81 WRB0515YD-3W 5 4.5-9 11 15 200 20 81 WRA1205YD-3W 12 9-18 22 ±5 ±300 ±30 76 WRA1212YD-3W 12 9-18 22 ±12 ±125 ±12 81 WRA1215YD-3W 12 9-18 22 ±15 ±100 ±10 83 WRB1203YD-3W 12 9-18 22 3.3 909 91 74 WRB1205YD-3W 12 9-18 22 5 600 60 76 WRB1212YD-3W 12 9-18 22 12 250 25 81 WRB1215YD-3W 12 9-18 22 15 200 20 81 WRA2405YD-3W 24 18-36 40 ±5 ±300 ±30 76 WRA2412YD-3W 24 18-36 40 ±12 ±125 ±12 81 WRA2415YD-3W 24 18-36 40 ±15 ±100 ±10 83 WRB2403YD-3W 24 18-36 40 3.3 909 91 74 WRB2405YD-3W 24 18-36 40 5 600 60 76 WRB2412YD-3W 24 18-36 40 12 250 25 81 WRB2415YD-3W 24 18-36 40 15 200 20 81 WRA4805YD-3W 48 36-72 80 ±5 ±300 ±30 85 WRA4812YD-3W 48 36-72 80 ±12 ±125 ±12 83 WRA4815YD-3W 48 36-72 80 ±15 ±100 ±10 85 WRB4803YD-3W 48 36-72 80 3.3 909 91 74 WRB4805YD-3W 48 36-72 80 5 600 60 78 WRB4812YD-3W 48 36-72 80 12 250 25 80 WRB4815YD-3W 48 36-72 80 15 200 20 80 WRB11012YD-3W 110 72-144 155 12 250 25 80 WRB11024YD-3W 110 72-144 155 24 125 12 78 Nominal Range Max* WRA0505YD-3W 5 4.5-9 WRA0512YD-3W 5 4.5-9 WRA0515YD-3W 5 WRB0505YD-3W *Input voltage can’t exceed this value,or will cause the permanent damage. COMMON SPECIFICATIONS Parameter Min. -40 Storage temperature -55 Temp. rise at full load Lead temperature Max. Units 95 % 85 ℃ 125 ℃ ℃ 15 ℃ 300 1.5mm from case for 10 seconds No-load power 0.2 W Cooling Free Air Convection Short circuit protection Continuous,automatic recovery Steel,nickel coated, copper Isolation voltage Tested for1 minute and 1mA 1500 Isolation resistance Test at 500VDC 1000 Isolation Capacitance Input/Output MTBF VDC MΩ 85 1000 Weight http://www.microdc.cn Typ. Storage humidity Operating temperature Case material MICRODC reserves the copyright Conditions Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 pF K hours 15 g page 1/3 WRA-YD-3W＆WRB-YD -3W Series TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Output power See below products program 0.3 Positive voltage accuracy Refer to recommended circuit Negative voltage accuracy TYPICAL CHARACTERISTICS Typ. Max. Units 3 W ±1 ±3 % Refer to recommended circuit ±3 ±5 % Load regulation 10% to 100% load WRB-YD-3W ±0.5 ±1 % Load regulation 10% to 100% load WRA-YD-3W* ±0.5 ±0.5 % Temperature drift (Vout) Refer to recommended circuit ±0.03 %/℃ Line regulation Input voltage from low to high ±0.2 ±0.5 % Ripple＆Noise** 20MHz Bandwidth 50 100 mVp-p Switching frequency 100% load, input voltage range 300 KHz Temperature Derating Graph RECOMMENDED CIRCUIT * Dual output models unbalanced load: ±5%. Output Graph ** Test ripple and noise by “parallel cable” method. See detailed operation instructions at Testing of Power Converter section, application notes. APPLICATION NOTE Requirement on output load In order to ensure the product operate efficiently and reliably,in addition to a max load(namely full load), a minimum load is specified for this kind of DC/DC 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. Recommended Circuit All the WRA_YD-3W&WRB_YD-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 100μF-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. Input current of power supply should afford the startup current of this kind of DC/DC module (See figure 2). General:Ip≤1.4*Iin-max 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 12 470 ±12 330 15 330 ±15 220 No parallel connection or plug and play http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 page 2/3 WRA-YD-3W＆WRB-YD -3W Series OUTLINE DIMENSIONS ＆ FOOTPRINT DETAILS MECHANICAL DIMENSIONS RECOMMENDED FOOTPRINT RECOMMENDED FOOTPRINT Top view grid:2.54mm(0.1inch) diameter:1.00mm(0.039inch) Note: Unit:mm[inch] Pin section tolerances:±0.10mm[±0.004inch] General tolerances:±0.25mm[±0.010inch] TUBE OUTLINE DIMENSIONS FOOTPRINT DETAILS Pin Single Dual 2、3 GND GND 9 NC 0V 11 NC -Vo 14 +Vo +Vo 16 0V 0V 22、23 Vin Vin NC:No connection When the environment temperature is higher than 71 71℃,, the product output power should be less then 60% of the rated power. No parallel connection or plug and play. Use dual output simultaneously,forbid pening output pin (0V) to use as single output. Note: Note: Unit :mm[inch] General tolerances:±0.50mm[±0.020inch] L=530mm[20.866inch] Tube Quantity: 15pcs L=220mm[8.661inch] Tube Quantity: 6pcs 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. http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 page 3/3