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L6563 Datasheet(PDF) 25 Page - STMicroelectronics |
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L6563 Datasheet(HTML) 25 Page - STMicroelectronics |
25 / 39 page L6563 - L6563A Application information 25/39 5. Check that the maximum current sourced by the TBO pin (pin 6) does not exceed the maximum specified (0.25mA): Equation 10 In the following Mathcad® sheet, as an example, the calculation is shown for the circuit illustrated in Figure 40. Figure 41 shows the internal block diagram of the tracking boost function. Design data Vin1 := 88V Vo1:= 200V Vin2 := 264V Vo2:= 385V Vox ;= 400V ∆Vo ;= 40V Step 1 choose: Vinx: = 270V Step 2 Step 3 I TBOmax 3 R T ------- 0.25 10 3 – ⋅ ≤ = Vin clamp: Vox Vo 1 – Vo 2 Vo 1 – --------------------------- Vin 2 ⋅ = Vox Vo 2 – Vo 2 Vo 1 – --------------------------- Vin 1 ⋅ – Vinclamp = 278.27V k: 3 2Vin x ⋅ ----------------------- = k = 7.857 x 10-3 R1: Vo ∆ 20 ----------- 10 6 ⋅ = R1 = 2 x 106 Ω |
Similar Part No. - L6563_07 |
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Similar Description - L6563_07 |
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