WRA-ZMD-10W＆WRB-ZMD -10W Series W, WIDE INPUT, ISOLATED & REGULATED DUAL/SINGLE OUTPUT DC 10 10W, DC--DC CONVERTER FEATURES ◆Wide (4:1) Input Range SELECTION GUIDE ◆Short Circuit Protection(automatic recovery) Input ◆1500VDC Isolation Output Efficiency ◆Operating Temperature: -40℃～﹢85℃ ◆No heat sink required Order code Voltage(VDC) Voltage (%,Typ) Nominal Range Max* (VDC) Max. Min. WRA2405ZMD-10W 24 9-36 40 ±5 ±1000 ±100 84 WRA2412ZMD-10W 24 9-36 40 ±12 ±416 ±42 81 WRA2415ZMD-10W 24 9-36 40 ±15 ±333 ±33 83 WRB2405ZMD-10W 24 9-36 40 5 2000 200 79 WRB2412ZMD-10W 24 9-36 40 12 833 83 81 WRB2415ZMD-10W 24 9-36 40 15 666 67 81 WRA4812ZMD-10W 48 18-72 80 ±12 ±416 ±42 85 WRA4815ZMD-10W 48 18-72 80 ±15 ±333 ±33 83 WRB4812ZMD-10W 48 18-72 80 12 833 83 85 WRB4815ZMD-10W 48 18-72 80 15 666 67 83 ◆No external component required ◆Internal SMD required ◆Metal shielding package ◆MTBF>1000Khours MODEL SELECTION WRB①24②05③Z④M⑤D⑥-10W⑦ ①Product Series ③Output Voltage ⑤Metal Shield ⑦Rated Power ②Input Voltage ④Wide (4:1) Input Range ⑥DIP Package Style Current(mA) *Input voltage can’t exceed this value,or will cause the permanent damage. APPLICATIONS The WRA_ZMD-10W&WRB_ZMD-10W 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≤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. COMMON SPECIFICATIONS Parameter Conditions Min. Typ. Storage humidity Max. Units 95 % Operating temperature -40 85 ℃ Storage temperature -55 125 ℃ 40 Temp. rise at full load Lead temperature ℃ 300 1.5mm from case for 10 seconds ℃ Cooling Free Air Convection Short circuit protection Continuous, Automatic recovery Case material Aluminium Alloy Isolation voltage Tested for1 minute and 1mA max 1500 VDC Isolation resistance Test at 500VDC 1000 MΩ Isolation Capacitance Input/output MTBF Weight 1000 1000 pF K hours 23.5 g MICRODC reserves the copyright http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 page 1/3 WRA-ZMD-10W＆WRB-ZMD -10W Series TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Output power See below products program 1.0 Positive voltage accuracy Refer to recommended circuit Negative voltage accuracy TYPICAL CHARACTERISTICS Typ. Max. Units 10 W ±1 ±3 % Refer to recommended circuit ±3 ±5 % Load regulation Form 10% to 100% load ±0.5 ±1* % Line regulation Input voltage from low to high ±0.2 ±0.5 % Temperature drift (Vout) Refer to recommended circuit ±0.03 %/°C Ripple** 20MHz Bandwidth 20 50 mVp-p Noise** 20MHz Bandwidth 75 150 mVp-p Switching frequency 100% load, input voltage range 300 KHz Temperature Derating Graph RECOMMENDED CIRCUIT * Dual output models unbalanced load: ±5%. ** Test ripple and noise by “parallel cable” method. See detailed Output Graph operation instructions at Testing of Power Converter section, application notes. 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_ZMD-10W&WRB_ZMD-10W Series have been tested ccording 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: 10μF-47μF Cout: 10μF/100mA CTRL Terminal When open or high impedance,the converter work well; When this pin is ‘high’; the converter shutdown; It should be note that the input current (Ic) should between 5-10mA, exceeding the maximum 20mA will cause permanence damage to the converter. The value of R Can be derived as follows : 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≤1.6*Iin-max No parallel connection or plug and play http://www.microdc.cn Output External Capacitor Table(Table 1) Single Vout Cout Dual Vout Cout (VDC) (μF) (VDC) (μF) 5 680 ±5 680 12 470 ±12 330 15 330 ±15 220 Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 page 2/3 WRA-ZMD-10W＆WRB-ZMD -10W Series OUTLINE DIMENSIONS ＆ FOOTPRINT DETAILS MECHANICAL DIMENSIONS RECOMMENDED FOOTPRINT Note: Unit:mm[inch] Pin section tolerances:±0.10mm[±0.004inch] General tolerances:±0.25mm[±0.010inch] FOOTPRINT DETAILS Pin Single Dual 1 GND GND 2 Vin Vin 3 +Vo +Vo 4 NC 0V 5 0V -Vo RECOMMENDED FOOTPRINT Top view,grid:2.54mm(0.1inch) diameter:1.00mm(0.039inch) TUBE OUTLINE DIMENSIONS NC:No connection When the environment temperature is higher than 71 71℃,, the product output power should be less then 60% of the rated power. No parallel connection or plug and play. Use dual output simultaneously,forbid pening output pin (0V) to use as single output. Note: Unit :mm[inch] General tolerances:±0.50mm[±0.020inch] L=230mm[9.055inch] Tube Quantity: 7pcs 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°C, 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. http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 page 3/3