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WRA1209YD-4W Datasheet(PDF) 2 Page - Microdc power Technology Co., Ltd |
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WRA1209YD-4W Datasheet(HTML) 2 Page - Microdc power Technology Co., Ltd |
2 / 3 page WRA-YD-4W&WRB-YD-4W WRA-YD-4W&WRB-YD-4W WRA-YD-4W&WRB-YD-4W WRA-YD-4W&WRB-YD-4W WRA-YD-4W&WRB-YD-4W WRA-YD-4W&WRB-YD-4W WRA-YD-4W&WRB-YD-4W WRA-YD-4W&WRB-YD-4W Series Series http://www.microdc.cn Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646 Page 2 of 3 RECOMMENDED RECOMMENDED RECOMMENDED RECOMMENDED RECOMMENDED RECOMMENDED RECOMMENDED RECOMMENDED CIRCUIT CIRCUIT CIRCUIT CIRCUIT CIRCUIT CIRCUIT CIRCUIT CIRCUIT Output Graph APPLICATION APPLICATION APPLICATION APPLICATION APPLICATION APPLICATION APPLICATION APPLICATION NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE Requirement Requirement Requirement Requirement on on on on output output output output load load load load In order to ensure the product operate efficiently and reliably,in addition to a max load(namely full load), a minimum load is specified for this kind of DC/DC converter.Make sure the specified range of input voltage is not exceeded,the minimum output load no no no no less less less less than than than than 10% 10% 10% 10% load load load load.If the actual load is less than the specified minimum load, the output ripple may increase sharply while its efficiency and reliability will reduce greatly.If the actual output power is very small,please add an appropriate resistor as extra loading,or contact our company for other lower output power products. Recommended Recommended Recommended Recommended Circuit Circuit Circuit Circuit All the WRA_YD-4W&WRB_YD-4W Series have been tested according to the following recommended testing circuit before leaving factory.This series should be tested under load(See figure 1). If you want to further decrease the input/output ripple,you can increase capacitance properly or choose capacitors with low ESR. However, the capacitance of the output filter capacitor must be proper. If the capacitance is too big, a startup problem might arise. For every channel of output, provided the safe and reliable operation is ensured, the greatest capacitance of its filter capacitor sees (Table 1). General: Cin: 5V&12V 100μF 24V&48V 100μF-47μF Cout: 10μF/100mA Input Input Input Input current current current current While using unstable power source,please ensure the output voltage and ripple voltage do not exceed indexes of the converter. Input current of power supply should afford the startup current of this kind of DC/DC module (See figure 2). General:Ip≤1.4*Iin-max No No No No parallel parallel parallel parallel connection connection connection connection or or or or plug plug plug plug and and and and play play play play Input Input Input Input Input Input Input Input Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications Voltage range 12VDC, 9~18VDC 24VDC, 18~36VDC 48VDC, 36~72VDC Filter p(Pi) Network Isolation Isolation Isolation Isolation Isolation Isolation Isolation Isolation Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications Rated voltage (60 sec) 1500 VDC Resistance > 1000MOhm Capacitance 120pF, typ. Environmental Environmental Environmental Environmental Environmental Environmental Environmental Environmental Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications Operating temperature (ambient) -40°C ... +85°C Storage temperature -55°C ... +125°C Case temperature +100°C, max. Derating None required Humidity (non-condensing) Up to 90% Cooling Free-air Convection MTBF: > 1,036,000 hrs (MIL-HDBK-217F, Ground Benign, t=+25°C) Specifications are subject to change without notification TYPICAL TYPICAL TYPICAL TYPICAL TYPICAL TYPICAL TYPICAL TYPICAL CHARACTERISTICS CHARACTERISTICS CHARACTERISTICS CHARACTERISTICS CHARACTERISTICS CHARACTERISTICS CHARACTERISTICS CHARACTERISTICS Temperature Derating Graph General General General General General General General General Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications Efficiency 73% to 81% Switching Frequency 250KHz, typ. 100% load Output Output Output Output Output Output Output Output Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications Voltage accuracy ±1%, max. Voltage balance (Dual Output) ±1% Ripple & noise (at 20MHz BW) 60mVp-p, max. Short circuit protection Continuous Short circuit restart Automatic Line voltage regulation ±0.5%, max. Load voltage regulation ±0.5%, max. Temperature coefficient ±0.02%/°C, typ. Physical Physical Physical Physical Physical Physical Physical Physical Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications Dimensions 31.75x20.32x10.16mm 1.25x0.8x0.4inches Weight 19g Case material Nickel-Coated Copper |
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