DC/DC Converter URA_LD-20WR3 & URB_LD-20WR3 Series 20W,Ultra wide input isolated & regulated dual / single output DC/DC converter Ultra wide input voltage rang (4:1) High efficiency up to 90% No-load power consumption as low as 0.15W Isolation voltage :1500VDC Input under-voltage protection, output short circuit protection, over-voltage protection, over-current protection Operating temperature range: -40℃ to +85℃ Meet CISPR22/EN55022 CLASS A, without external components Six-sided metal shielding package Reverse voltage protection available with A2S(Chassis mounting) or A4S(35mm DIN-Rail mounting) UL60950, EN60950, IEC60950 approval Patent Protection RoHS URA_LD-20WR3 & URB_LD-20WR3 series are isolated 20W DC-DC products with 4:1 input voltage. They feature efficiency up to 90%, 1500VDC isolation, operating temperature of -40℃~+85℃, Input under-voltage protection, output short circuit protection, over-voltage protection, over-current protection and EMI meets CISPR22/EN55022 CLASS A, which make them widely applied in data transmission device, battery power supplies, Tele-comunication device, distributed power supply system, remote control system, industrial robot system fields. And extension package A2S and A4S also enable them with reverse voltage protection. Selection Guide Input Voltage (VDC) Output Output Voltage (VDC) Output Current (mA)(Max./Min.) Efficiency (%,Min./Typ.) @ Full Load Nominal (Range) Notes：①Series with suffix “H” are heat sink mounting; series with suffix “A2S” are chassis mounting，with suffix “A4S” are DIN-Rail mounting, for example URB2405LD-20WHR3A2S is chassis mounting of with heat sink,URB2405LD-20WR3A4S is DIN-Rail mounting of without heat sink; If the application has a higher requirement for heat dissipation, you can choose modules with heat sink; ②Absolute maximum rating without damage on the converter, but it isn't recommended; ③Efficiency is measured In nominal input voltage and rated output load;A2S (wiring) and A4S (rail) Model due to input reverse polarity protection, minimum efficiency greater than Min.-2 is qualified; ④ The capacitive loads of positive and negative outputs are identical. MORNSUN Guangzhou Science & Techn

DC/DC Converter URA_LD-20WR3 & URB_LD-20WR3 Series Input Specifications Item Operating Conditions 24VDC input Input Current (full load / no-load) 48VDC input 24VDC input Reflected Ripple Current Input impulse Voltage (1sec. max.) Starting Time Under Voltage Shutdown Starting Voltage Nominal input& constant resistance load Input Filter Pi filter Module switch on Module switch off Ctrl suspended or connected to TTL high level (3.5-12VDC) Ctrl pin connected to GND or low level (0-1.2VDC) Input current when switched off Note: *The voltage of Ctrl pin is relative to input pin GND. Output Specifications...

DC/DC Converter URA_LD-20WR3 & URB_LD-20WR3 Series Insulation Resistance Input-output, insulation voltage 500VDC Isolation Capacitance Operating Temperature Storage Temperature Storage Humidity Pin Welding Resistance Temperature Welding spot is 1.5mm away from the casing, 10 seconds Switching Frequency * Note:* This series of products using reduced frequency technology, the switching frequency is test value of full load,When the load is reduced to below 50%, the switching frequency decreases with decreasing load. Physical Specifications Casing Material Aluminum alloy Horizontal package( without...

DC/DC Converter Efficiency Vs Input (Full Load) Efficiency Vs Input (Full Load) Output Current Percentage (%) Output Current Percentage (%) Design Reference All the DC/DC converters of this series are tested according to the recommended circuit (see Fig. 2) before delivery, If it is required to further reduce input and output ripple, properly increase the input & output of additional capacitors Cin and Cout or select capacitors of low equivalent impedance provided that the capacitance is no larger than the max. capacitive load of the product, MORNSUN GUANGZHOU SCIENCE & TECHNOLOGY CO.,LTD. MORNSUN...

DC/DC Converter URA_LD-20WR3 & URB_LD-20WR3 Series 3. Application of Trim and calculation of Trim resistance Vo’ Trim down Applied circuits of Trim (Part in broken line is the interior of models) Calculation formula of Trim resistance: up: R T = RT is Trim resistance a is a self-defined parameter, with no real meaning. 4. It is not allowed to connect modules output in parallel to enlarge the power 5. For more information please find DC-DC converter application notes on www.mornsun-power.com Horizontal Package (without heat sink) Dimensions and Recommended Layout THIRD ANGLE PROJECTION Front View...

DC/DC Converter URA_LD-20WR3 & URB_LD-20WR3 Series Horizontal Package (with heat sink) Dimensions Heat Sink THIRD ANGLE PROJECTION Note: Unit :mm[inch] General tolerances:±0.50[±0.020] If use heatsinks,make sure there is enough space for a special size in ther above graph Bottom View Front View URA_LD-20WR3A2S & URB_LD-20WR3A2S(without heat sink) Dimensions THIRD ANGLE PROJECTION 76.00 [2.992] Front View Note: Unit:mm[inch] Wire range：24~12 AWG General tolerances:±0.50[±0.020] MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpr

DC/DC Converter URA_LD-20WR3 & URB_LD-20WR3 Series URA_LD-20WHR3A2S & URB_LD-20WHR3A2S(with heat sink) Dimensions THIRD ANGLE PROJECTION Front View Note: Unit:mm[inch] Wire range:24~12 AWG General tolerances:±0.50[±0.020] URA_LD-20WR3A4S & URB_LD-20WR3A4S(without heat sink) Dimensions THIRD ANGLE PROJECTION Front View Note: Unit:mm[inch] Wire range：24~12 AWG General tolerances:±0.50[±0.020] MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final inter

DC/DC Converter URA_LD-20WR3 & URB_LD-20WR3 Series URA_LD-20WHR3A4S & URB_LD-20WHR3A4S(with heat sink) Dimensions THIRD ANGLE PROJECTION Note: Unit:mm[inch] Wire range:24~12 AWG General tolerances:±0.50[±0.020] Front View Notes: 1. Packing information please refer to Product Packing Information which can be downloaded from www.mornsun-power.com.The Packing bag number of Horizontal package :58200035(without heat sink), 58200051(with heat sink, A2S/ A4S package number: 58220022; 2. The recommended unbalance degree of the dual output module load is ≤±5%; if the degree exceeds ±5%, than the product...