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WRB4812YMT-3W Datasheet(PDF) 2 Page - Microdc power Technology Co., Ltd |
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WRB4812YMT-3W Datasheet(HTML) 2 Page - Microdc power Technology Co., Ltd |
2 / 3 page WRA-YMT-3W&WRB-YMT-3W WRA-YMT-3W&WRB-YMT-3W WRA-YMT-3W&WRB-YMT-3W WRA-YMT-3W&WRB-YMT-3W WRA-YMT-3W&WRB-YMT-3W WRA-YMT-3W&WRB-YMT-3W WRA-YMT-3W&WRB-YMT-3W WRA-YMT-3W&WRB-YMT-3W S Series eries http://www.microdc.cn Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646 Page 2 of 3 ISOLATION ISOLATION ISOLATION ISOLATION ISOLATION ISOLATION ISOLATION ISOLATION SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS Parameter Test conditions Min. Typ. Max Units Isolation voltage Tested for 1 minute and 1mA max 1500 VDC Isolation resistance Test at 500VDC 1000 MΩ Isolation capacitance Input/output, 100KHz/1V 1000 pF 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 less than 10% 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_YMT-3W & WRB_YMT-3W 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 10µF~47µF Cout: 10µF/100mA Input Input Input Input Current Current Current Current When it is used in unregulated power supply, be sure that the fluctuating range of the power supply and the rippled voltage do not exceed the module standard. Input current of power supply should afford the flash startup current of this kind of DC/DC module (Figure 2), General: Ip ≤1.6*Iin-max(Vin=5V) Ip ≤1.4*Iin-max(Vin=12V/24V/48V) 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 TYPICAL TYPICAL TYPICAL TYPICAL TYPICAL TYPICAL TYPICAL TYPICAL CHARECTERISTICS CHARECTERISTICS CHARECTERISTICS CHARECTERISTICS CHARECTERISTICS CHARECTERISTICS CHARECTERISTICS CHARECTERISTICS RECOMMENDED RECOMMENDED RECOMMENDED RECOMMENDED RECOMMENDED RECOMMENDED RECOMMENDED RECOMMENDED CIRCUIT CIRCUIT CIRCUIT CIRCUIT CIRCUIT CIRCUIT CIRCUIT CIRCUIT OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS Parameter Test conditions Min. Typ. Max Units Output power See above products program 0.3 3 W Positive voltage accuracy Refer to recommended circuit ±1 ±3 % Negative voltage accuracy Refer to recommended circuit ±3 ±5 % Load regulation From 10% to 100% load ±0.5 ±1* % Line regulation Input voltage from low to high ±0.2 ±0.5 % Temperature Drift (Vout) Refer to recommended circuit ±0.03 %/℃ Output ripple& noise** 20MHz Bandwidth 35 100 mVp-p Switching frequency 100% load, nominal input voltage 300 KHz * Dual output models unbalanced load:±5%. **Test ripple and noise by “parallel cable”method. See detailed operation instructions at Testing of Power Converter section, application notes. |
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