WRA-YMT-3W&WRB-YMT-3W Series 3W, WIDE INPUT , ISOLA TED & REGULATED SINGLE/DUAL OUTPUTDC/DC CONVERTER SELECTION GUIDE Input Output Voltage(VDC) Order code Voltage (VDC) Current(mA) Efficiency (%,Typ) Nominal Range Max.* Max. Min. WRA0505YMT-3W 5 4.5-9 11 ±5 ±300 ±30 72 WRA0512YMT-3W 5 4.5-9 11 ±12 ±125 ±13 74 WRA0515YMT-3W 5 4.5-9 11 ±15 ±100 ±10 75 WRB0505YMT-3W 5 4.5-9 11 5 600 60 72 ◆Operating temperature: -40℃ ~ +85 ℃ WRB0512YMT-3W 5 4.5-9 11 12 250 25 74 ◆1500VDC isolation WRB0515YMT-3W 5 4.5-9 11 15 200 20 75 WRA1205YMT-3W 12 9-18 22 ±5 ±300 ±30 76 WRA1212YMT-3W 12 9-18 22 ±12 ±125 ±13 79 ◆Internal SMD construction WRA1215YMT-3W 12 9-18 22 ±15 ±100 ±10 79 ◆MTBF>1,000,000 hours WRB1205YMT-3W 12 9-18 22 5 600 60 74 WRB1212YMT-3W 12 9-18 22 12 250 25 79 FEATURES ◆2:1 Wide input voltage range ◆No heatsink required ◆Short circuit protection(automatic recovery) WRB1215YMT-3W 12 9-18 22 15 200 20 79 ◆Industry standard pinout WRA2405YMT-3W 24 18-36 40 ±5 ±300 ±30 76 ◆RoHS Compliance WRA2412YMT-3W 24 18-36 40 ±12 ±125 ±13 79 WRA2415YMT-3W 24 18-36 40 ±15 ±100 ±10 79 WRB2405YMT-3W 24 18-36 40 5 600 60 76 WRB2412YMT-3W 24 18-36 40 12 250 25 79 WRB2415YMT-3W 24 18-36 40 15 200 20 79 WRA4805YMT-3W 48 36-72 80 ±5 ±300 ±30 76 WRA4812YMT-3W 48 36-72 80 ±12 ±125 ±13 79 WRA4815YMT-3W 48 36-72 80 ±15 ±100 ±10 79 WRB4805YMT-3W 48 36-72 80 5 600 60 76 WRB4812YMT-3W 48 36-72 80 12 250 25 79 WRB4815YMT-3W 48 36-72 80 15 200 20 79 MODEL SELECTION ① ② ③ ④ ⑤ ⑥ WRB 24 12 Y MT -3W ①Product Series ③Output Voltage ⑤Mini package style ②Input Voltage ④Wide (2:1) Input Range ⑥Rated Power *Input voltage can ' t exceed this value, or will cause the permanent damage. APPLICATIONS The WRA_YMT-3W&WRB_YMT-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: COMMON SPECIFICATIONS 1) Where the voltage of the input power supply is wide Parameter range(voltage range ≤2:1); Test conditions Min. 2) Where isolation is necessary between input and Storage humidity output (isolation voltage ≤1500VDC); Operating temperature -40 Storage temperature -55 3) Where the regulation of the output voltage and the output ripple noise are demanded. Temp. rise at full load Lead temperature Max. 1.5mm from case for 10 seconds % 85 ℃ 125 ℃ ℃ ℃ 300 Continuous, automatic recovery Cooling Free air convection Package material Epoxy Resin (UL94-V0) 1000 Weight K hours 5.2 MICRODC reserves the copyright http://www.microdc.cn Units 95 15 Short circuit protection MTBF Typ. Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 1 of 3 g WRA-YMT-3W&WRB-YMT-3W Series ISOLATION SPECIFICATIONS Parameter TYPICAL CHARECTERISTICS Test conditions Min. Isolation voltage Tested for 1 minute and 1mA max 1500 Isolation resistance Test at 500VDC 1000 Isolation capacitance Input/output, 100KHz/1V Typ. Max Units VDC MΩ 1000 pF OUTPUT SPECIFICATIONS Parameter Test conditions Min. Typ. Max Units 3 W ±3 % ±3 ±5 % ±0.5 ±1* % Output power See above products program 0.3 Positive voltage accuracy Refer to recommended circuit Negative voltage accuracy Refer to recommended circuit Load regulation From 10% to 100% load Line regulation Input voltage from low to high ±0.2 ±0.5 % Temperature Drift (Vout) Refer to recommended circuit ±0.03 %/℃ Output ripple& noise** 20MHz Bandwidth 35 100 mVp-p Switching frequency 100% load, nominal input voltage 300 ±1 KHz * Dual output models unbalanced load:±5%. **Test ripple and noise by “parallel cable”method. See detailed operation instructions at Testing of Power Converter section, application notes. RECOMMENDED CIRCUIT 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_YMT-3W & WRB_YMT-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 24V&48V 100µF 10µF~47µF Cout: 10µF/100mA Input Current When it is used in unregulated power supply, be sure that the fluctuating range of the power supply and the rippled voltage do not exceed the module standard. Input current of power supply should afford the flash startup current of this kind of DC/DC module (Figure 2), General: Ip ≤1.6*Iin-max(Vin=5V) Ip ≤1.4*Iin-max(Vin=12V/24V/48V) No parallel connection or plug and play http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 2 of 3 WRA-YMT-3W&WRB-YMT-3W Series OUTLINE DIMENSIONS ＆ FOOTPRINT DETAILS MECHANICAL DIMENSIONS RECOMMENDED FOOTPRINT(TOP VIEW) TUBE OUTLINE DIMENSIONS 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. Capacitor MAX load tested at input voltage range and full load. 4. All specifications measured at Ta=25℃, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 5. Only typical models listed, other models may be different, please contact our technical person for more details. 6. In this datasheet, all the test methods of indications are based on corporate standards. 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 3 of 3