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ALD18A48N-6 Datasheet(PDF) 5 Page - Astec America, Inc |
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ALD18A48N-6 Datasheet(HTML) 5 Page - Astec America, Inc |
5 / 20 page Technical Reference Notes ALD12/18/20/25 Series (Single Output 16 th Brick) MODEL: ALD12/18/20/25 SERIES SHEET 5 OF 20 AUGUST 17, 2005 – REVISION C Electrical Specifications (continued) SAFETY AGENCY / MATERIAL RATING / ISOLATION Parameter Device Safety Approval All UL/cUL 60950 TUV EN 60950 Material Flammability Rating All UL94V-0 Parameter Device Symbol Min Typical Max Unit Input to Output Capacitance All - 1000 - pF Input to output Resistance All - 10 - Mohms Input to Output Insulation Type All - Basic - - Figure 2. Peak to Peak Output Noise Measurement Setup. Figure 1. Input Reflected Ripple Current Measurement Setup. Vo(+) Vo(-) RESISTIVE LOAD 10 uF 0.1 uF SCOPE COPPER STRIP Use a 0.1 µF @50V X7R ceramic capacitor (connected an inch away from the output terminals of the UUT) and a 10 µF @ 25V tantalum capacitor (2 inches away from the output terminals of the UUT). Scope measurement should be made using a BNC socket, positioned 3 inches away from output terminals of the converter. BATTERY Cs 220 uF ESR < 0.1 OHM @ 20 ºC, 100 kHz Ltest 12 uH 33 uF ESR < 0.7 OHM @ 20 ºC, 100 kHz Vi(+) Vi(-) TO OSCILLOSCOPE Measure input reflected-ripple current with a simulated source inductance (Ltest) of 12 uH. Capacitor Cs offsets possible battery impedance. Measure current as shown above. |
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