Catalog excerpts
DC/DC Converter WRA_S-1WR2 & WRB_S-1WR2 Series 1W, Wide input voltage, isolated & regulated output DC/DC converter Patent Protection RoHS Ultra compact SIP package Wide input voltage range (2:1) Operating temperature range: -40℃ to +85℃ Isolation voltage: 1.5K VDC Low ripple & noise Short circuit protection (self-recovery) Remote On/Off EN60950 approval WRA_S-1WR2 & WRB_S-1WR2 series are isolated 1W DC-DC products with 2:1 input voltage and conventional voltage output. The product has a relatively compact SIP-8 plastic package, and features high efficiency, operating temperature of -40 ℃~+85 ℃, remote control, and continuous short-circuit protection. The smaller size and fine cost design make the converter an ideal solution in communication, instruments, and industrial electronics applications. Selection Guide Input Voltage (VDC) Certification Ripple & Noise (mVp-p, Efficiency (%, Min./Typ.) @ Full Load Output Voltage(VDC) Output Current (mA)(Max./Min.) Nominal (Range) MORNSUN Guangzhou Science & Technology C
Open the catalog to page 1DC/DC Converter WRA_S-1WR2 & WRB_S-1WR2 Series WRB4805S-1WR2 CE Notes: ①Exceeding the maximum input voltage may cause permanent damage; ②For the dual output modules, the capacitive loads of positive and negative outputs are the same. Input Specifications Item Operating Conditions Starting Voltage Input Impulse Voltage (1sec. max.) 5VDC Input Reflected Ripple Current Input Current (full load/no-load) Input Filter Filter capacitor Unavailable Module turn-on The Ctrl end is suspended or of high resistance Module turn-off Connect with high level (relative to the input grounding) to make the...
Open the catalog to page 2DC/DC Converter Product Characteristic Curve Temperature Derating Curve Safe Operation Area Environment Temperature.CO Efficiency Vs Input Voltage(Full Load) Efficiency Vs Output Load (Vin=24V) Input Voltage(V) Output Current Percentage(%) MORNSUN GUANGZHOU SCIENCE & TECHNOLOGY CO.,LTD. MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
Open the catalog to page 3DC/DC Converter WRA_S-1WR2 & WRB_S-1WR2 Series Design Reference 1. Recommended circuit All the DC/DC converters of this series are tested according to the recommended circuit (see Fig. 2) before delivery. If a further decrease of the input and output ripple is required, properly increase the input & output of additional capacitors Cin1, Cin2, Cs and Cout; or select capacitors of low equivalent impedance like series capacitor, etc. Cs is used to reduce ripple. No need to add Cs, if ripple meets the demand .Appropriate filter capacitance shall be chosen, start-up problems may be caused if the...
Open the catalog to page 4DC/DC Converter WRA_S-1WR2 & WRB_S-1WR2 Series Notes: ① Part ① in Fig. 3 is used for EMS test while part ② is used for EMI filtering; and parts ① and ② may be selected based on needs. ② VC is the voltage of the Ctrl end relative to the GND of the input grounding; VD is the positive-going conduction pressure drop of D1; IC is the current flows into the Ctrl end and its value is generally 5-10mA, see Fig. 3-③ for the peripheral circuit of Ctrl end; ③ If there is no recommended parameters, no external component is required. EMC solution-recommended circuit PCB layout Fig. 4 Note: the min....
Open the catalog to page 5DC/DC Converter Dimensions and Recommended Layout THIRD ANGLE PROJECTION (O! 1. Packing information please refer to Product Packing Information which can be downloaded from www.mornsun-power.com. Packing 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 recommended unbalance degree of the dual output module load is ^±5%; if the degree exceeds ±5%, than the product performance cannot be guaranteed to comply with all parameters in the datasheet. Please contact our...
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