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WRB0524(M)P-3W Datasheet(PDF) 2 Page - MORNSUN Science& Technology Ltd. |
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WRB0524(M)P-3W Datasheet(HTML) 2 Page - MORNSUN Science& Technology Ltd. |
2 / 3 page The copyright and authority for the interpretation of the products are reserved by MORNSUN Specifications subject to change without notice. WRA_(M)P-3W & WRB_(M)P-3W B/0-2012 Page 2 of 3 ISOLATION SPECIFICATIONS TYPICAL TEMPERATURE CURVE Item Test Conditions Min. Typ. Max. Units Isolation voltage Tested for 1 minute and 1mA max 1500 VDC Isolation resistance Test at 500VDC 1000 M Ω Isolation capacitance Input/Output, 100KHz/1V 85 pF 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 0.2 W Cooling Free Air Convection Short Circuit Protection Continuous, Automatic Recovery Case Material P: Plastic (UL94-V0) MP: Stainless steel MTBF 1000 K hours Weight 14 g Operating Temp.( ) C 100 OUTPUT SPECIFICATIONS RECOMMENDED CIRCUIT Item Test Conditions Min. Typ. Max. Units Output power 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_(M)P-3W ±0.5 ±0.75 Load regulation 10% to 100% load WRA_(M)P-3W* ±0.5 ±1.0 Line regulation Input voltage from low to high ±0.2 ±0.5 % Temperature drift(Vout) Refer to recommended circuit ±0.03 %/ °C Noise & Ripple** 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. 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. 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_(M)P-3W & WRB_(M)P-3W Series have been tested according to the following recommended testing circuit before leaving factory. This series should be tested under load. Never be tested under no 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. If you want to use the products in high EMI, please choose our metal packaged products (WRA_MP-3W/WRB_MP-3W). 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 3) Input current While using unstable power source, please ensure the output voltage and ripple voltage do not excced 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 DC DC Vin G ND +Vo 0V Cin Cout Vin G ND +Vo 0V Cin Cout DC DC - Vo Cout S ing le O u tp ut (Figure 1) Input Voltage (V) Input Voltage Range Ip (Figure 2) External Capacitor Table (Table 1) Single Vout (VDC) Cout ( μF) Dual Vout (VDC) Cout ( μF) 3.3 2200 ±5 680 5 1000 ±9 470 9 680 ±12 330 12 470 ±15 220 15 330 ±24 100 24 220 - - |
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