WRA-ZT-1W5&WRB-ZT-1W5 Series 1.5W,WIDE INPUT ISOLATED®ULATED SINGLE/DUAL OUTPUT DC/DC CONVERTER MINIATURE SMD PACKAGE SELECTION GUIDE Input Order code Output Voltage(VDC) Voltage (VDC) Current(mA) Efficiency (%,Typ) Nominal Range Max.* Max. Min. WRA2405ZT-1W5 24 9-36 40 ±5 ±150 ±15 74 WRA2412ZT-1W5 24 9-36 40 ±12 ±63 ±6 77 WRA2415ZT-1W5 24 9-36 40 ±15 ±50 ±5 75 WRB2403ZT-1W5 24 9-36 40 3.3 500 50 71 ◆4:1 wide input voltage range WRB2405ZT-1W5 24 9-36 40 5 300 30 76 ◆Short circuit protection(automatic recovery) WRB2409ZT-1W5 24 9-36 40 9 167 17 76 WRB2412ZT-1W5 24 9-36 40 12 125 12 79 WRB2415ZT-1W5 24 9-36 40 15 100 10 80 ◆Operating temperature: -40℃ ~ +85℃ WRA4805ZT-1W5 48 18-72 80 ±5 ±150 ±15 74 ◆No heatsink required WRA4812ZT-1W5 48 18-72 80 ±12 ±63 ±6 76 WRA4815ZT-1W5 48 18-72 80 ±15 ±50 ±5 76 WRB4803ZT-1W5 48 18-72 80 3.3 500 50 72 ◆MTBF>1,000,000 hours WRB4805ZT-1W5 48 18-72 80 5 300 30 75 ◆RoHS Compliance WRB4809ZT-1W5 48 18-72 80 9 167 17 78 WRB4812ZT-1W5 48 18-72 80 12 125 12 77 WRB4815ZT-1W5 48 18-72 80 15 100 10 77 FEATURES ◆SMD package ◆1500VDC isolation ◆No external component required *Input voltage can't exceed this value, or will cause the permanent damage. MODEL SELECTION WRA①24②05③Z④ T⑤-1W5⑥ ①Product Series ③Output Voltage ⑤SMD Package ②Input Voltage ④Wide (4:1) Input Range ⑥Rated Power APPLICATIONS The WRA_ZT-1W5&WRB_ZT-1W5 series are specially designed for applications where a wide range input voltage power supplies are isolated from the input COMMON SPECIFICATIONS power supply in a distributed power supply system on a circuit board. Parameter Test conditions Min. Typ. Storage humidity These products apply to: Operating temperature -40 1) Where the voltage of the input power supply is wide Storage Temp. range -55 range(voltage range ≤4:1); Temp. rise at full load 2) Where isolation is necessary between input and Lead temperature output (isolation voltage ≤1500VDC); Short circuit protection 3 here the regulation of the output voltage and the Cooling output ripple noise are demanded. Case Material MTBF Max. % 85 ℃ 125 ℃ ℃ 15 1.5mm from case for 10 seconds ℃ 300 Continuous, automatics recovery Free air convection Epoxy Resin (UL94-V0) 1000 Weight K hours 5.2 MICRODC reserves the copyright http://www.microdc.cn Units 95 Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 1 of 3 g WRA-ZT-1W5&WRB-ZT-1W5 Series ISOLATION SPECIFICATIONS Parameter TYPICAL TEMPERATURE CURVE 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 µF OUTPUT SPECIFICATIONS Parameter Test conditions Min. Typ. Max Units Output power Refer to products program 1.5 W Positive voltage accuracy Refer to recommended circuit 0.15 ±1 ±3 % Negative voltage accuracy Refer to recommended circuit ±3 ±5 % Load regulation From 10% to 100% load ±0.5 ±1.5* % Line regulation Input voltage from low to high ±0.2 ±0.75 % Temperature Drift (Vout) Refer to recommended circuit ±0.03 %/℃ Output ripple & noise** 20MHz Bandwidth 35 100 mVp-p Switching Frequency 100% load, input voltage range 550 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 1) Requirement on output load In order to ensure the product operate efficiently and reliably, in addition to a max load), a minimum load is specified for this kind of DC/DC converter. Make sure the load (namely full 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 WRA_ZT-1W5 & WRB_ZT-1W5 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 maximum capacitance of its filter capacitor sees (Table 1). General: Cin: 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 ≤1.6*Iin-max 4) 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-ZT-1W5&WRB-ZT-1W5 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