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WRA4812ZP-3W Datasheet(PDF) 2 Page - MORNSUN Science& Technology Ltd. |
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WRA4812ZP-3W Datasheet(HTML) 2 Page - MORNSUN Science& Technology Ltd. |
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2 / 2 page  MORNSUN reserves the copyright Specifications subject to change without notice. WRA_ZP-3W & WRB_ZP-3W A/1-2008 Page 2 of 2 OUTPUT SPECIFICATIONS APPLICATION NOTE Item Test conditions Min Typ Max Units Output power See below products program 0.3 3 W Positive voltage accuracy Refer to recommended circuit ±1 ±3 Negative voltage accuracy Refer to recommended circuit ±3 ±5 10% to 100% load(WRB_ZP_3W) ±0.5 ±0.75 Load regulation 10% to 100% load(WRA_ZP_3W)* ±0.5 ±1 Line regulation Input voltage from low to high ±0.2 ±0.5 % Temperature drift Refer to recommended circuit ±0.03 %/°C Ripple & Noise** 20MHz bandwidth 50 100 mVp-p Switching frequency 100% load, nominal input voltage 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. COMMON SPECIFICATIONS Item Test Conditions Min Typ Max Units Storage humidity 95 % Operating temperature -40 85 Storage temperature -55 125 Temp. rise at full load 15 Lead temperature 1.5mm from case for 10 seconds 300 °C No-load power consumption 0.2 W Cooling Free air convection Short circuit protection Continuous, automatic recovery Case material Copper, Nickel Coated MTBF 1000 K hours Weight 15 g Note: 1.All specifications measured at TA=25 °C, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 2.See below recommended circuits for more details. TYPICAL CHARACTERISTICS Operating Temp.( ) C 100 OUTLINE DIMENSIONS& PIN CONNECTIONS Note: Unit:mm(inch) Pin diameter:0.50mm(0.020inch) Pin tolera nces: 0.10mm( 0.004inch) Gen eral tolerances: 0.2 5mm( 0.010inch) ±± ±± RECOMMENDED F OOTPRI NT Top view,grid: 2.54mm(0. 1inch), di amete r:1.0 0mm(0 .039 inch) Dual O utput Single Out put First Angle Projection FO OTPRINT DETAILS Pin Single Dual NC:No Connection 2 3 9 11 14 16 22 23 22,23 23 11 23 22 14 4.57 32.00 2.54 22.86 (1.260) (0.100) (0.180) (0.900) ( ) Bot tom View ( ) Side View 2,3 9 11 14 16 Vin GND No Pin NC +Vo 0V Vin GND +Vo 0V 0V -Vo 2 3 11 14 16 22 23 16 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_ZP-3W & WRB_ZP-3W Series have been tested according to the following recommended testing circuit before leaving factory (Figure 1). This series should be tested under load. DC DC Vin G ND +Vout 0V Cin Vin G ND +Vout 0V Cin DC DC -Vout Single Ou tput (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: 5V&12V 100 μF 24V&48V 10 μF-47μF Cout: 10 μF/100mA Output External Capacitor Table(Table 1) Single Vout (VDC) Cout (uF) Dual Vout (VDC) Cout (uF) 3.3 2200 ±5 680 5 1000 ±9 470 12 470 ±12 330 15 330 ±15 220 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 Input Voltage (V) Input Voltage Range Ip No parallel connection or plug and play. |
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