35w set -top -box switching supply circuit diagram

Published:2011/5/11 4:16:00 Author:Ecco | Keyword: 35w supply , set -top -box switching | From:SeekIC

The 5 roads voltage of 35w set -top -box switching supply circuit diagram are distinguished as: Uo1(+30 V, 100 ma), Uo2(+18 V, 550 ma), Uo3(+5 V, 2.5 A), Uo4(+3.3 V, 3 A), Uo5.(-5 V, 100 ma). Among them, +5 V and + 3.3 Vare main output, the rest of allare assisting output. When the swaping input voltage u=220(1 ± 15%) V, the total output power ofswitch reaches 38.5 W, if adopting breadth range voltage input(u=85~265 V), the total outputreduces 25 W. It can be used as the power supply of box(Set ― top Box), video recorder(VCR) , shoot video recorder(CVCR) and DVD machine. The power supply of machine set -top -box switching is higher than 77%, and it has the function of undervoltage and overvoltage protection.



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