WRA-ZD-1W5&WRB-ZD-1W5 Series 1.5W, WIDE INPUT, ISOLATED & REGULATED DUAL/SINGLE OUTPUT DC-DC CONVERTER SELECTION GUIDE Input Output Voltage(VDC) Order code No-load (mA)(typ.) Voltage (VDC) Current(mA) Efficiency (%,Typ) Nominal Range Max.* Max. Min. WRA2405ZD-1W5 24 9-36 40 16 ±5 ±150 ±15 74 WRA2412ZD-1W5 24 9-36 40 16 ±12 ±63 ±6 78 WRA2415ZD-1W5 24 9-36 40 16 ±15 ±50 ±5 79 WRB2403ZD-1W5 24 9-36 40 16 3.3 455 45 72 ◆Wide input voltage range(4:1) WRB2405ZD-1W5 24 9-36 40 16 5 300 30 74 ◆Operating temperature: -40℃ ~ +85℃ WRB2409ZD-1W5 24 9-36 40 16 9 167 17 76 WRB2412ZD-1W5 24 9-36 40 16 12 125 12 78 WRB2415ZD-1W5 24 9-36 40 16 15 100 10 80 ◆Short circuit protection(automatic recovery) WRA4805ZD-1W5 48 18-72 80 8 ±5 ±150 ±15 74 ◆Internal SMD construction WRA4812ZD-1W5 48 18-72 80 8 ±12 ±63 ±6 78 WRA4815ZD-1W5 48 18-72 80 8 ±15 ±50 ±5 80 FEATURES ◆DIP24 package ◆1500VDC Input/Output isolation ◆No external component required WRB4803ZD-1W5 48 18-72 80 8 3.3 455 45 72 ◆No heat sink required WRB4805ZD-1W5 48 18-72 80 8 5 300 30 74 ◆Industry standard pinout WRB4809ZD-1W5 48 18-72 80 8 9 167 17 76 ◆Five-sided shielding package WRB4812ZD-1W5 48 18-72 80 8 12 125 12 78 WRB4815ZD-1W5 48 18-72 80 8 15 100 10 80 ◆MTBF>1,000,000 hours * Input voltage over it may cause permanent damage to the device. ◆RoHS Compliance MODEL SELECTION WRA①24②12③Z④ D⑤-1W5⑥ ①Product Series ③Output Voltage ⑤DIP24 Package ②Input Voltage ④Wide (4:1) Input Range ⑥Rated Power COMMON SPECIFICATIONS Parameter Min. Typ. Storage humidity APPLICATIONS The Test conditions WRA_ZD-1W5&WRB_ZD-1W5 series are Operating temperature -40 Storage Temperature -55 Temp. rise at full load specially designed for applications where a wide Lead temperature range input voltage power supplies are isolated from Cooling the input power supply in a distributed power supply Case material system on a circuit board. Short circuit protection These products apply to: MTBF 1) Where the voltage of the input power supply is wide Weight Max. 95 % 85 ℃ 125 ℃ ℃ 15 1.5mm from case for 10 seconds Units 300 ℃ Free air convection Plastic(UL94-V0) or Stainless steel Continuous, automatic recovery 1000 K hours 15 g range (voltage range≤4:1); 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. ISOLATION SPECIFICATIONS Parameter 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. VDC MΩ 100 MICRODC reserves the copyright http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Units Page 1 of 3 pF WRA-ZD-1W5&WRB-ZD-1W5 Series ISOLATION SPECIFICATIONS Parameter Test conditions TYPICAL CHARECTERISTICS Min. Typ. Max Units Output power See above 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 ±2* % Line regulation Input voltage from low to high ±0.2 ±0.75 % Temperature drift Refer to recommended circuit ±0.03 %/℃ Ripple** 20MHz Bandwidth 20 50 mVp-p Noise** 20MHz Bandwidth 50 100 mVp-p Switching frequency 100% load, input voltage range 300 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 (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 WRA_ZD-1W5&WRB_ZD-1W5 Series have been tested according to the following recommended testing circuit before leaving factory. (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 should not be too high, or may cause start-up problem. For every channel of output, provided the safe and reliable operation is ensured, the greatest capacitance of its filter capacitor sees (Table 1).If you want to use the products in high EMI, please choose our metal packaged products (WRA_ZD-1W5 & WRB_ZD-1W5). General: Cin: 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 startup current of this kind of DC/DC module. (See figure 2) General: Ip ≤1.4*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-ZD-1W5&WRB-ZD-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. All specifications measured at Ta=25℃, 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 3 of 3