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AGQ150-48S05PB-4L Datasheet(PDF) 9 Page - Emerson Network Power |
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AGQ150-48S05PB-4L Datasheet(HTML) 9 Page - Emerson Network Power |
9 / 13 page AGQ150-48S05 DC-DC Converter 9/13 http://www.emersonnetworkpower.com.cn Trim Characteristics Connecting an external resistor between Trim pin and Vo- pin will decrease the output voltage. While connecting it between Trim and Vo+ will increase the output voltage. The following equations determine the external resistance to obtain the trimmed output voltage. ) ( 2 . 10 510 Ω − Δ = − k R down trim () ) ( 2 . 10 510 225 . 1 100 1 . 5 Ω − Δ − Δ × Δ + × × = − k V R nom up trim △ =(Vo-Vnom)×100/Vnom nom V : Nominal output voltage For example, to get 5.5V output, the trimming resistor is () ) ( 8 . 167 2 . 10 5 / 100 ) 5 5 . 5 ( 510 5 / 100 ) 5 5 . 5 ( 225 . 1 5 / 100 ) 5 5 . 5 ( 100 5 1 . 5 Ω = − × − − × − × × − + × × = − k R up trim The output voltage can also be trimmed by potential applied at the Trim pin. 5 . 2 041 . 2 + = trim o V V Where trim V is the potential applied at the Trim pin, and o V is the desired output voltage. When trimming up, the output current should be decreased accordingly so as not to exceed the maximum output power. Load Cout Rtrim_up Vo+ S+ Trim S- Vo- Load Vo+ S+ Trim S- Vo- Cout Rtrim_down Figure 13 Trim up Figure 14 Trim down |
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