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URA2405LD-20W Datasheet(PDF) 6 Page - MORNSUN Science& Technology Ltd. |
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URA2405LD-20W Datasheet(HTML) 6 Page - MORNSUN Science& Technology Ltd. |
6 / 6 page The copyright and authority for the interpretation of the products are reserved by MORNSUN URA_LD-15W&URA_LD-20W 2013.06.13-B/1 Page 6 of 6 HEATSINK ASSEMBLY & PACKAGE DIAGRAM TEST CONFIGURATIONS Input Reflected-Ripple Current Test Setup Input reflected-ripple current is measured with an inductor Lin and Capacitor Cin to simulate source impedance. DC Cin Lin DC Load Oscilloscope Current Probe Lin(4.7 µH) Cin(220 µF, ESR < 1.0Ω at 100 KHz) DESIGN CONSIDERATIONS 1) Requirement on output load To ensure this module can operate efficiently and reliably, During operation, the minimum output load could not be less than 10% of the full load. If the actual output power is very small, please connect a resistor with proper resistance at the output end in parallel to increase the load, or use our company ’s products with a lower rated output power. 2) Recommended circuit All the URA_LD-15W&URA_LD-20W 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 3). If you want to further decrease the output ripple, you can increase capacitance properly or choose capacitors with low ESR. However, th e capacitance can ’t exceed the maximum capacitor load in the list (Table 1). Vin GND +Vo 0V Cin Cout DC DC -Vo Cout Dual Output (Figure 3) 3) Cannot use in parallel and hot swap EXTERNAL CAPACITOR TABLE (TABLE 1) Capacitance Vout(VDC) Cout # (µF) Cin( µF) ±5 220 ±12 100 ±15 100 100 Note: # For each output. Note: 1. Operation under minimum load will not damage the converter; However, they may not meet all specification listed. 2. Max. Capacitive Load tested at input voltage range and full load. 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 our corporate standards. 5. All characteristics are for listed model only, non-standard models may perform differently, please contact our technical person for more detail. 6. Contact us for your specific requirement. 7. Specifications subject to change without prior notice. MORNSUN Science & Technology Co.,Ltd. Address: No. 5, Kehui St. 1, Kehui development center, Science Ave., Guangzhou Science City, Luogang district, Guangzhou,P.R.China. Tel: 86-20-38601850 Fax:86-20-38601272 E-mail: info@mornsun.cn Http://www.mornsun-power.com |
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