전자부품 데이터시트 검색엔진 |
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LD05-20B24 데이터시트(PDF) 6 Page - MORNSUN Science& Technology Ltd. |
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LD05-20B24 데이터시트(HTML) 6 Page - MORNSUN Science& Technology Ltd. |
6 / 10 page In Figure 1, F1 refers to the input fuse. Proper fuse selection should be a safety agency approved, slow blow fuse. Selection of the proper fuse rating is necessary to ensure power converter and system protection (potential failure if the rating is too high) and prevent false fuse blowing (which could happen if the rating is too low). Below is the formula to calculate the proper rating: I = 3 x Vo1 x Io1 / η / Vin(min.) Vo1 = output voltage Io1 = output current; η = the converter ’s efficiency; Vin(min) = the minimum input voltage Futher circuit notations: ♦ NTC is a thermistor. ♦ CY and CX are safety capacitors. ♦ C1 is a high frequency ceramic capacitor or polyester capacitor, 0.1μF/50V. ♦ C2 is output filtering high frequency aluminum electrolytic capacitor. Select a 220μF rating if the output current is greater than 5A, or a 100 μF rating if the output current is less than 5A. The insulation voltage should be derated to less than 80% of rated value. For dual or triple output converters, the circuit of input side remains the same and the outputs should be considered independently in component selection (see Figure 3). The application circuit shown in Figure 1 is typical application circuit, whereby all MORNSUN products will meet EMI Class B, and Class 3 lightening strike and surge testing (see component datasheets for more details). To comply with more stringent EMC testing, additional filtering should be incorporated. See Figure 2 for a suggested filtering circuit. |
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