VRA_LD-20WR3
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Catalog excerpts

VRA_LD-20WR3 - 1

VRA_LD-20WR3 & VRB_LD-20WR3 Series 20W,wide input isolated & regulated dual / single output DC/DC converter FEATURES • wide input voltage rang (2:1) • High efficiency up to 90% • No-load power consumption as low as 0.15W • Isolation voltage : 1.5KVDC • output short circuit protection, over-voltage protection, over-current protection • Operating temperature range: -40C to +85C • 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) • IEC60950, UL60950, EN60950 approval cTOus C £ CB Patent Protection RoHS VRA_LD-20WR3 & VRB_LD-20WR3 series are isolated20WDC-DCproducts with 2:1 input voltage. They feature efficiency up to 90%, 1500VDC isolation, operating temperature of -40 C to +35 °C, output short circuit protection, over-voltage protection, over-current protection and EMI meets CISPR22/EN55022 CLASS A, without external components which make them widely appiiedin data transmission device, battery power supplies, Teie-comunication device, distributed power supply system, remote confro/sysfem, industrial robot system fields. And extension package A2S andA4S also enable them with reverse voltage protection. Notes: ©Series with suffix "H" are heat sink mounting; series with suffix "A2S" are chassis mounting, with suffix "A4S" are DIN-Rail mounting, for example VRB2405LD-20WHR3A2S is chassis mounting of with heat sink,VRB2405LD-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; ©Absolute maximum rating without damage on the converter, but it isn't recommended; ©Efficiency 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; ® The capacitive loads of positive and negative outputs are identical. MORNSUN GUANGZHOU 5CIGNCG & TGCHNOLOGY CO.,LTD. MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of fi

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VRA_LD-20WR3 - 2

DC/DC Converter VRA_LD-20WR3 & VRB_LD-20WR3 Series Input Specifications Note: *The voltage of Ctrl pin is relative to input pin GND. Output Specifications MORNSUN GUANGZHOU SCIENCE & TECHNOLOGY CO.,LTD. MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation

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VRA_LD-20WR3 - 3

DC/DC ConverterVRA_LD-20WR3 & VRB_LD-20WR3 Series Operating Temperature Temperature Derating Curve 60 Safe Operating Area 40 Operating Tempe ratureCC) MORNSUN GUANGZHOU SCIENCE & TECHNOLOGY CO.,LTD. MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation

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VRA_LD-20WR3 - 4

DC/DC ConverterVRA_LD-20WR3 & VRB_LD-20WR3 Series Efficiency Vs Output Load(Vin=48V) Design Reference 1. Typical application 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. Parameter description MORNSUN GUANGZHOU SCIENCE & TECHNOLOGY CO.,LTD. MORNSUN...

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VRA_LD-20WR3 - 5

DC/DC ConverterVRA_LD-20WR3 & VRB_LD-20WR3 Series3. Application of Trim and calculation of Trim resistance Applied circuits of Trim (Part in broken line is the interior of models) Calculation formula of Trim resistance: Vo'-Vref Vref Rt is Trim resistance a is a self-defined parameter, with no real meaning. Front View MORNSUN GUANGZHOU SCIENCE & TECHNOLOGY CO.,LTD. MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation

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VRA_LD-20WR3 - 6

DC/DC Converter VRA_LD-20WR3 & VRB_LD-20WR3 Series Horizontal Package (with heat sink) Dimensions VRA_LD-20WR3A2S & VRB_LD-20WR3A2S(without heat sink) Dimensions MORN5UN GUANGZHOU SCIENCE & TECHNOLOGY CO.,LTD. MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation

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VRA_LD-20WR3 - 7

VRA_LD-20WR3 & VRB_LD-20WR3 Series MORNSUN” VRA_LD-20WHR3A2S & VRB_LD-20WHR3A2S(with heat sink) Dimensions TH RD ANGLE PROJECT ON Unit: mm[inch] VRA_LD-20WR3A4S & VRB_LD-20WR3A4S(without heat sink) Dimensions THIRD ANGLE PROJECTION Unit: mm[inch] Front View MORNSUN GUANGZHOU SCI6NCG & TGCHNOLOGY CO.,LTD. MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation

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VRA_LD-20WR3 - 8

VRA_LD-20WR3 & VRB_LD-20WR3 Series MORNSUN” VRA_LD-20WHR3A4S & VRB_LD-20WHR3A4S(with heat sink) Dimensions THIRD ANGLE PROJECTION Unit: mm[inch] 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 *S±5%; if the degree exceeds ±5%, than the product performance cannot be guaranteed to comply with all parameters in the...

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