WRA-ZMD-6W&WRB-ZMD-6W Series 6W, 4:1 WIDE INPUT, ISOLATED & REGULATED DUAL & SINGLE OUTPUT DC-DC CONVERTER SELECTION GUIDE Input Order code Output Voltage(VDC) Voltage (VDC) Current(mA) Efficiency (%,Typ) Nominal Range Max.* Max. Min. WRA2405ZMD-6W 24 9-36 40 ±5 ±600 ±60 80 WRA2412ZMD-6W 24 9-36 40 ±12 ±250 ±25 82 WRA2415ZMD-6W 24 9-36 40 ±15 ±200 ±20 84 WRA2424ZMD-6W 24 9-36 40 ±24 ±125 ±13 82 ◆1500VDC isolation WRB2405ZMD-6W 24 9-36 40 5 1200 120 80 ◆Short circuit protection (automatic recovery) WRB2412ZMD-6W 24 9-36 40 12 500 50 82 WRB2415ZMD-6W 24 9-36 40 15 400 40 84 WRB2424ZMD-6W 24 9-36 40 24 250 25 82 ◆Internal SMD construction WRA4805ZMD-6W 48 18-72 80 ±5 ±600 ±60 80 ◆Metal shielding package WRA4812ZMD-6W 48 18-72 80 ±12 ±250 ±25 82 WRA4815ZMD-6W 48 18-72 80 ±15 ±200 ±20 84 WRB4805ZMD-6W 48 18-72 80 5 1200 120 80 WRB4812ZMD-6W 48 18-72 80 12 500 50 82 WRB4815ZMD-6W 48 18-72 80 15 400 40 84 FEATURES ◆DIP package ◆Operating temperature: -40℃ to +85℃ ◆Industry standard pinout ◆No heat sink required ◆MTBF>1,000,000 hours *Input voltage can't exceed this value, or will cause the permanent damage. ◆RoHS Compliance MODEL SELECTION WRA①24②05③Z④ M⑤D⑥-6W⑦ ①Product Series ③Output Voltage 1st ⑤Metal Shield ⑦Rated Power ②Input Voltage ④Wide (4:1) Input Range ⑥DIP Package Style COMMON SPECIFICATIONS Parameter Test conditions Min. Typ. Storage humidity APPLICATIONS Operating temperature -40 Storage temperature -55 Temp. rise at full load The WRA_ZMD-6W & WRB_ZMD-6W Series are Lead temperature specially designed for applications where a wide range Cooling input voltage power supplies are isolated from the Short circuit protection input power supply in a distributed power supply system Case material on a circuit board. MTBF 1.5mm from case for 10 seconds Units 95 % 85 ℃ 125 ℃ ℃ 40 300 ℃ Free air convection Continuous, automatic recovery Aluminum 1000 Weight These products apply to: Max. K hours 15 g 1) Where the voltage of the input power supply is wide 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 1 mA 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-ZMD-6W&WRB-ZMD-6W Series OUTPUT SPECIFICATIONS Parameter TYPICAL TEMPERATURE CURVE Test conditions Min. Typ. Max Units Output power See above products program 6 W Line regulation (at full load) Input voltage from low to high 0.6 ±0.2 ±0.5 % Load regulation Form 10% to 100%load ±0.5 ±2* % Positive output voltage accuracy Refer to recommended circuit ±1 ±3 % Negative output voltage accuracy Refer to recommended circuit ±3 ±5 Temperature Drift (Vout) Refer to recommended circuit ±0.02 Ripple** 20MHz Bandwidth 30 50 mVp-p Noise** 20MHz Bandwidth 75 150 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 (namelyull 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. 2) Recommended Circuit All the WRA_ZMD-6W & WRB_ZMD-6W 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 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). General: Cin: 24V&48V Cout: 10µF/100mA 10µF~47µF 3) Input current While using unstable power source, please ensure the output voltage and ripple voltage do not exceed indexes of the converter. The preceding power source must be able to provide for converter sufficient starting current Ip (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-ZMD-6W&WRB-ZMD-6W 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. In this datasheet, all the test methods of indications are based on corporate standards. 6. 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