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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TS4956 датащи(PDF) 40 Page - STMicroelectronics |
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TS4956 датащи(HTML) 40 Page - STMicroelectronics |
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40 / 51 page  TS4956 Application information 40/51 and the maximum value is obtained when: and its value is: Note: This maximum value depends only on power supply voltage and load values. The efficiency is the ratio between the output power and the power supply: The maximum theoretical value is reached when VPEAK = VCC, so The TS4956 has one active output BTL power amplifier when in modes 1 and 2. In mode 7, the TS49656 has two active output BTL power amplifiers. Each amplifier produces heat due to its power dissipation. Therefore the maximum die temperature is the sum of each amplifier’s maximum power dissipation. It is calculated as follows: ● Pdiss 1 = power dissipation due to the first BTL power amplifier. ● Pdiss 2 = power dissipation due to the second BTL power amplifier. ● Total Pdiss =Pdiss 1 +Pdiss 2 (W) In most cases, Pdiss 1 = Pdiss 2, giving: P out ∂ ∂P diss 0 = P diss MA X 2V CC 2 π 2 R L ---------------W () = η P out P sup ply ------------------- πV PEAK 4V CC --------------------- == η π 4 --- 78.5% == TotalP diss 2P diss1 = To talP diss 42VCC π R L ---------------------- P out 2P ou t (W) – = |
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