WRB-YT-3W Series 3W, WIDE INPUT, ISOLATED & REGULATED SINGLE OUTPUT DC/DC CONVERTER SELECTION GUIDE Input order code Output Voltage Voltage(VDC) Nominal Range Max* WRB1205YT-3W 12 9-18 20 Efficiency up to 81% WRB1212YT-3W 12 9-18 Operating temperature: -40°C ~ +85°C WRB1215YT-3W 12 1500VDC isolation WRB2405YT-3W FEATURES ◆ ◆ ◆ UL94V-0 package material ◆ No external component required Efficiency Current(MA) (%,Typ.) (VDC) Max. Min. 5 600 60 75 20 12 250 25 78 9-18 20 15 200 20 79 24 18-36 40 5 600 60 76 WRB2412YT-3W 24 18-36 40 12 250 25 80 WRB2415YT-3W 24 18-36 40 15 200 20 80 WRB4805YT-3W 48 36-72 80 5 600 60 77 WRB4812YT-3W 48 36-72 80 12 250 25 80 WRB4815YT-3W 48 36-72 80 15 200 20 81 ◆ Industry standard pinout ◆ MTBF>1,000,000 hours ◆ ◆ RoHS Compliance * Input voltage can not exceed this value, or will cause the permanent damage. MODEL SELECTION ① ② ③ ④ ⑤ ⑥ WR WRB B 12 05 Y T -3W ①Product Series ③Output Voltage ⑤Package Style ②Input Voltage ④Wide (2:1) Input Range ⑥Rated Power DESCRIPTION The WRB_YT-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. COMMON SPECIFICATIONS Item Test conditions Min. Typ. Storage humidity 95 % -40 85 ℃ Storage temperature -55 125 ℃ Lead temperature 1.5mm from case for 10 seconds ℃ 300 Free air convection Continuous, automatic recovery Epoxy Resin (UL94-V0) Case material MTBF ℃ 15 Cooling Short circuit protection 1000 Weight http://www.microdc.cn Units Operating temperature Temp. Rise at full load MICRODC RESERVES THE COPYRIGHT Max. Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 k hours 11 g Page 1 of 3 WRB-YT-3W Series TYPICAL CHARACTERISTICS ISOLATION SPECIFICATIONS Test Conditions Min. Isolation voltage Item 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 100 pF *Supply voltage must be discontinued at the end of short circuit duration. OUTPUT SPECIFICATIONS Item Test Conditions Min. Typ. Max. Units 3 W ±1 ±3 % % Output power Refer to products program Output voltage accuracy Refer to recommended circuit 0.3 Load regulation From 10% to 100% load ±0.1 ±1 Line regulation Input voltage from low to high ±0.2 ±0.5 % Temperature drift (Vout) Refer to recommended circuit ±0.03 %/℃ Ripple & noise* 20MHz Bandwidth 50 100 mVp-p Switching frequency 100% load, input voltage range 300 *Test ripple and noise by “parallel cable”method . See detailed ower Converter section , application notes. kHz operation instructions at Testing of *Supply voltage must be discontinued at the end of short circuit duration. RECOMMENDED CIRCUIT APPLICATION NOTE 1) 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 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. 2) Recommended Circuit All the WRB_YT-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: 12V 100µF 24V&48V 10µF-47µF Cout: 10µF/100mA 3) 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..4*Iin-max 4) No parallel connection or plug and play http://www.microdc.cn Output External Capacitor Table (Table 1) Single Vout Cout (VDC) (μF) 5 1000 12 470 15 330 Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 2 of 3 WRB-YT-3W Series OUTLINE DIMENSIONS ＆ FOOTPRINT DETAILS MECHANICAL DIMENSIONS RECOM RECOMM MENDED FOOTPRINT TUBE OUTLINE DIMENSIONS FOOTPRINT DETAILS Pin Function 2,3 GND 14 +Vo 16 0V 22,23 Vin Others NC NC: No connection Note: Unit:mm[inch] Pin section tolerances:±0.10mm[±0.004inch] General tolerances:±0.25mm[±0.010inch] 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 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 3 of 3