URF1D_QB-50W Series 50W, wide input voltage, isolated & regulated single output DC-DC converter Patent Protection RoHS FEATURES • Wide input voltage range: 66-160V • Efficiency up to 90% • Low no-load power • Isolation voltage 3000VDC • Operating temperature range: -40°C ~+100°C • Input under-voltage protection, output over-voltage, over-current, short-circuit, over-temperature protection • International standard: 1/4 brick • Meets railway standard EN50155 URFlD_QB-50W Series is a high performance product designed for the fed of railway applications. The DC/DC converters feature 50W output power, no min. load requirement, wide input voltage of66-160VDC, And allow the high base plate temperature(up to 100°C). The products also provide input under-voltage protection, output over-voltage protection, short-circuit protection, over-temperature protection, remote control and compensation, output voltage regulation functions. The series meet railway standard EN501'55. And target railway system. Selection Guide Part No. Input Specifications Item MORNSUN® A MORNSUN GUANGZHOU SCIENCE & TECHNOLOGY CO.,LTD. MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation

DC/DC Converter URF1D_QB-50W Series Output Specifications MORNSUN GUANGZHOU SCIENCE & TECHNOLOGY CO.,LTD. MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation

DC/DC ConverterURF1D_QB-50W Series Efficiency Curves Physical Specifications MORNSUN GUANGZHOU SCIENCE & TECHNOLOGY CO.,LTD. MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation

DC/DC Converter URF1D_QB-50W Series Sense of application and precautions 1. When not using remote sense +Vo sens e+ Trim sens e0V The le ad as s ho rt as po ss ible Short at pin root Notes： 1) When not using remote sense, make sure + Vo and Sense + are shorted, and that 0V and Sense- are shorted as well; 2) Keep the tracks between + Vo and Sense + and 0V and Sense- as short as possible. Avoid a looping track. If noise interferes the loop, the operation of the power module will become unstable. MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation...

DC/DC Converter URF1D_QB-50W Series 2. When Remote Sense is used A s far as po s sibl e u sin g t he twis te d pair +Vo sens e+ Trim sens e0V Using remote sense with long wires may cause output voltage to become unstable. Consult us if long sensing wiring is necessary. Sense tracks or wires should be as short as possible. If using wires, it should not use twisted-pair or shielded wires. Please use wide PCB tracks or a thick wires between the power supply module and the load, the line voltage drop should be kept less than 0.3V. Make sure the power supply module's output voltage remains within...

4. Thermal design The maximum operating temperature of base-plate TB is 100 °C, as long as the user's thermal system keeps TB <100 °C, the converter can deliver its full rated power. A power derating curve can be calculated for any heatsink that is attached to the base-plate of the converter It is onen airflow rate. This information is usually available from the heatsink vendor. The following formula can the be used to determine the maximly necessary to determine the thermal resistance, Rth(B-A), of the chosen heatsink between the base-plate and the ambient air for c givum power the converter...

DC/DC Converter URF1D_QB-50W Series Calculation formula of Trim resistance: up: R T = Note： Value for R1, R2, R3, and Vref refer to the above table 1. RT: Resistance of Trim. a: User-defined parameter, no actual meanings. Vo’: The trim up/down voltage. 6. It is not allowed to connect modules output in parallel to enlarge the power 7. For more information please find the application notes on www.mornsun-power.com Dimensions and Recommended Layout (without heatsink) MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interp

DC/DC ConverterURF1D_QB-50W SeriesDimensions and Recommended Layout(with heatsink) THIRD ANGLE PROJECTION • Front View Function Sense- Function Pin Trim Sense+ Mounting hole screwing torque: Max 0.4 Nm 1. Packing Information please refer to 'Product Packing Information'. Packing bag number: 58010113(without heatsink), 58220017(with heatsink); 2. Recommend to use module with more than 5% load, if not, the ripple of the product may exceeds the specification, but does not affect the reliability of the product; 3. The max capacitive load should be tested within the input voltage range and under...